Trojan.GenericKD.2314760_25bfbf5296

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

crypts.exe:1988
%original file name%.exe:1584
WScript.exe:964
WScript.exe:696

The Trojan injects its code into the following process(es):

crypts.exe:244

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:1584 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\$inst\temp_0.tmp (294 bytes)
%Program Files%\House\Dorm\bi2puk.vbs (868 bytes)
%Program Files%\House\Dorm\4.txt (27 bytes)
%Program Files%\House\Dorm\3.txt (17 bytes)
%Program Files%\House\Dorm\Uninstall.exe (3999 bytes)
%Program Files%\House\Dorm\crypts.exe (3555 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\$inst\2.tmp (68 bytes)
%Program Files%\House\Dorm\instagramm.bat (1 bytes)
%Program Files%\House\Dorm\slonopotam.vbs (281 bytes)
%Program Files%\House\Dorm\Uninstall.ini (2 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\$inst (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\$inst\2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\$inst\temp_0.tmp (0 bytes)

Registry activity

The process crypts.exe:244 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B1 A2 26 F2 7F B4 E9 A8 D8 F6 13 FB 32 23 73 16"

[HKCU\Software\NVIDIA Corporation\Global\nvUpdate]
"Value" = "20150407"
"Guid" = "712d44da-2cbe-4efb-9c8b-9b90b230ef8c"

The process crypts.exe:1988 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F0 C2 4E 50 EE 38 FF D0 F3 C7 A0 94 38 62 D8 D5"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

The process %original file name%.exe:1584 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"InstallDate" = "20150503"
"Publisher" = "House"
"Language" = "1033"
"NoRepair" = "1"

"UninstallString" = "%Program Files%\House\Dorm\Uninstall.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"NoModify" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"InstallLocation" = "%Program Files%\House\Dorm\"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"VersionMinor" = "4"
"EstimatedSize" = "212"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"DisplayName" = "Dorm 1.4"
"DisplayIcon" = "%Program Files%\House\Dorm\Uninstall.exe"
"DisplayVersion" = "1.4"
"InstallSource" = "c:\"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Program Files%\House\Dorm]
"instagramm.bat" = "instagramm"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"wscript.exe" = "Microsoft (R) Windows Based Script Host"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "77 B7 53 91 C3 82 C9 CD 27 2B 3B 36 E6 7E 41 75"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Dorm 1.4]
"VersionMajor" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Program Files%\House\Dorm]
"crypts.exe" = ""

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Dorm" = "%Program Files%\House\Dorm\crypts.exe"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

"IntranetName" = "1"

The process WScript.exe:964 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1F 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DA D6 EE 85 0C 8A CF 23 CA 4F C4 B5 A5 B3 6E 56"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

The process WScript.exe:696 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DF A7 E8 BB C3 7E 63 93 11 3C 96 BB 4F 42 6C 22"

Dropped PE files

MD5	File path
f3217c2d340154dd5d047817e5d04e6f	c:\Program Files\House\Dorm\Uninstall.exe
ef359ef42b7a73c1b8a7cb8a5c36de42	c:\Program Files\House\Dorm\crypts.exe

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 1178 bytes in size. The following strings are added to the hosts file listed below:

191.101.14.114	my.mail.ru
191.101.14.114	m.my.mail.ru
191.101.14.114	vk.com
191.101.14.114	ok.ru
191.101.14.114	m.vk.com
191.101.14.114	odnoklassniki.ru
191.101.14.114	vk.com
191.101.14.114	www.odnoklassniki.ru
191.101.14.114	m.odnoklassniki.ru
191.101.14.114	ok.ru
191.101.14.114	m.ok.ru
191.101.14.114	www.odnoklassniki.ru
191.101.14.114	sotialmonstercookie.ru
217.20.152.226	st.mycdn.me
217.20.156.72	mycdn.me

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):

   crypts.exe:1988
   %original file name%.exe:1584
   WScript.exe:964
   WScript.exe:696

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   %Documents and Settings%\%current user%\Local Settings\Temp\$inst\temp_0.tmp (294 bytes)
   %Program Files%\House\Dorm\bi2puk.vbs (868 bytes)
   %Program Files%\House\Dorm\4.txt (27 bytes)
   %Program Files%\House\Dorm\3.txt (17 bytes)
   %Program Files%\House\Dorm\Uninstall.exe (3999 bytes)
   %Program Files%\House\Dorm\crypts.exe (3555 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\$inst\2.tmp (68 bytes)
   %Program Files%\House\Dorm\instagramm.bat (1 bytes)
   %Program Files%\House\Dorm\slonopotam.vbs (281 bytes)
   %Program Files%\House\Dorm\Uninstall.ini (2 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Dorm" = "%Program Files%\House\Dorm\crypts.exe"

5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
   
6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
7. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name: House
Product Name:
Product Version:
Legal Copyright: House
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.4
File Description: Dorm 1.4 Installation
Comments:
Language: Russian (Russia)

Company Name: HouseProduct Name: Product Version: Legal Copyright: House Legal Trademarks: Original Filename: Internal Name: File Version: 1.4File Description: Dorm 1.4 Installation Comments: Language: Russian (Russia)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
CODE	4096	148684	148992	4.57087	bac8bae7a5e5326cf49943b90d1c062a
DATA	155648	10388	10752	2.62963	abafcbfbd7f8ac0226ca496a92a0cf06
BSS	167936	4341	0	0	d41d8cd98f00b204e9800998ecf8427e
.idata	176128	6040	6144	3.38637	7a4934595db0efc364c3982c4e335d8c
.tls	184320	8	0	0	d41d8cd98f00b204e9800998ecf8427e
.rdata	188416	24	512	0.14174	c4fdd0c5c9efb616fcc85d66056ca490
.reloc	192512	6276	6656	4.56552	867a1120317d51734587a74f6ee70016
.rsrc	200704	17716	17920	4.23757	943a7d1f572a650a4abfae9c0e7bba74

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 31
8fa1d401efdc8f2d6f38889e0ff3ae17
bdcc3204d391a7e3f3e0a7f95ec99670
9da678d662091e16b41f12e4d64b5c58
472526c52cee7ea73bf020d4ec4b18f0
19345a8261ba7c7ea79ddb95da1f6670
1022f5e04530728122dacfa21ba63445
d8d4e7f78d58c1409aadaae94d5c298b
3cce7a85eee58a52918b37d3dba398b9
7c75791ff9de166378cf46f342e52ba2
c518c7dc2829cf9c2c732cd97b3e3d40
42504f9c3f02ef261b19850ac0973916
2f5228afe15638e3a87d9d46b0402d3d
3c8a1c30723a91ce7ff090a21b5933ea
cb6ba0035038930cf24459969f942c0e
1f33c315bb9fa1ac2c2fd59b584d10c2
88423a223fd554809b84132b480190d6
c42542c6e24720f12970ca0b69833e6c
f99b227444f6545accf1964b9798c04f
b4dc4fba352e74413310aa6842e028c0
26ef73ccdcda21e3aa41ad9f9acd08fe
2e827320ad99ec276d32f82f93ddeff9
d3134cfecb31d0afe5d12f980881a4a8
83e4aaa47f5602c05b64382159bba0b9
aaddd8d4e79e9327162b35db9b96abb5
a393f9f372840a9184d01323243bf08b

Network Activity

URLs

URL	IP
server-29.mymovieboxxx.com	191.101.14.114

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

wuauclt.exe_1588:

.text

.text

`.data

`.data

.rsrc

.rsrc

@.reloc

@.reloc

wuauclt.pdb

wuauclt.pdb

GetProcessHeap

GetProcessHeap

KERNEL32.dll

KERNEL32.dll

_wcmdln

_wcmdln

_amsg_exit

_amsg_exit

msvcrt.dll

msvcrt.dll

ntdll.dll

ntdll.dll

ole32.dll

ole32.dll

RegCloseKey

RegCloseKey

RegOpenKeyExW

RegOpenKeyExW

RegCreateKeyExW

RegCreateKeyExW

ADVAPI32.dll

ADVAPI32.dll

USER32.dll

USER32.dll

OLEAUT32.dll

OLEAUT32.dll

SHLWAPI.dll

SHLWAPI.dll

zcÁ

zcÁ

version="6.0.0.0"

version="6.0.0.0"

name="Microsoft.Windows.windowsupdate.wuauclt"

name="Microsoft.Windows.windowsupdate.wuauclt"

true

true

name="Microsoft.Windows.Common-Controls"

name="Microsoft.Windows.Common-Controls"

publicKeyToken="6595b64144ccf1df"

publicKeyToken="6595b64144ccf1df"

wuaueng.dll

wuaueng.dll

Error: 0xx. wuauclt handler: failed to spawn COM server

Error: 0xx. wuauclt handler: failed to spawn COM server

Error: 0xx. wuauclt handler: failed to load wuaueng

Error: 0xx. wuauclt handler: failed to load wuaueng

/ReportNow

/ReportNow

/ShowWindowsUpdate

/ShowWindowsUpdate

/CloseWindowsUpdate

/CloseWindowsUpdate

wuauclt.exe failed to get proc address for UI export object with error %#lx

wuauclt.exe failed to get proc address for UI export object with error %#lx

Failed to load %s with error %X

Failed to load %s with error %X

wucltui.dll

wucltui.dll

wucltux.dll

wucltux.dll

call RunAUClientUI on wucltui.dll/wucltux.dll

call RunAUClientUI on wucltui.dll/wucltux.dll

Ntdll.dll

Ntdll.dll

WuSqm %ls session datapoint (id:%d) is incremented with dword %d.

WuSqm %ls session datapoint (id:%d) is incremented with dword %d.

wuauclt.exe is exiting with code 0xX

wuauclt.exe is exiting with code 0xX

wuauclt.exe launched with command line %s

wuauclt.exe launched with command line %s

kernel32.dll

kernel32.dll

WUWeb

WUWeb

Report

Report

7.6.7600.256

7.6.7600.256

Global\WindowsUpdateTracingMutex

Global\WindowsUpdateTracingMutex

WindowsUpdate.log

WindowsUpdate.log

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Trace

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Trace

Windows

Windows

shell32.dll

shell32.dll

%s: %s [

%s: %s [

%s: %s

%s: %s

%s\%s

%s\%s

= Module: %s

= Module: %s

= Module:

= Module:

= Process: %s

= Process: %s

= Process:

= Process:

=========== Logging initialized (build: %s, tz: %s) ===========

=========== Logging initialized (build: %s, tz: %s) ===========

wups2.dll

wups2.dll

wups.dll

wups.dll

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Setup\ServiceStartup\

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Setup\ServiceStartup\

%hs %ls page "%ls", hr=%X

%hs %ls page "%ls", hr=%X

Microsoft.WindowsUpdate

Microsoft.WindowsUpdate

wupdmgr.exe

wupdmgr.exe

Failed to cocreate IShellWindows, error = 0xlX

Failed to cocreate IShellWindows, error = 0xlX

Failed to obtain window doc for window %d, error = 0xlX

Failed to obtain window doc for window %d, error = 0xlX

Failed to obtain folder view for window %d, error = 0xlX

Failed to obtain folder view for window %d, error = 0xlX

Failed to obtain folder IPersist for window %d, error = 0xlX

Failed to obtain folder IPersist for window %d, error = 0xlX

Window %d is NOT a WU window

Window %d is NOT a WU window

Done enumerating windows

Done enumerating windows

Quit for window %d failed: 0xlX

Quit for window %d failed: 0xlX

Window %d is a WU window. Attempting to close

Window %d is a WU window. Attempting to close

Failed to obtain class ID for window %d, error = 0xlX

Failed to obtain class ID for window %d, error = 0xlX

Got NULL disp interface for window %d

Got NULL disp interface for window %d

Got %d instead of VT_DISPATCH for window %d

Got %d instead of VT_DISPATCH for window %d

Failed to obtain IWebBrowserApp for window %d, error = 0xlX

Failed to obtain IWebBrowserApp for window %d, error = 0xlX

Failed to enumerate window %d, error = 0xlX

Failed to enumerate window %d, error = 0xlX

Found %d explorer windows

Found %d explorer windows

Closing WU explorer windows

Closing WU explorer windows

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\VolatileData

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\VolatileData

WUAppNotificationWindows

WUAppNotificationWindows

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired\Mandatory

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired\Mandatory

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\PostRebootReporting

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\PostRebootReporting

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending\

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending\

%chdhd

%chdhd