Trojan.GenericKD.2149990_83e4aaa47f – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

crypts.exe:852
%original file name%.exe:1164
WScript.exe:1340
WScript.exe:1688

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

crypts.exe:2412

Mutexes

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

File activity

The process %original file name%.exe:1164 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 (288 bytes)
%Program Files%\House\Dorm\bi2puk.vbs (831 bytes)
%Program Files%\House\Dorm\4.txt (27 bytes)
%Program Files%\House\Dorm\3.txt (15 bytes)
%Program Files%\House\Dorm\Uninstall.exe (3386 bytes)
%Program Files%\House\Dorm\crypts.exe (3725 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 (295 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:2412 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C1 D7 25 97 25 9D 52 81 C2 17 E8 95 B8 51 13 E8"

[HKCU\Software\NVIDIA Corporation\Global\nvUpdate]
"Value" = "20150126"
"Guid" = "6ce66e81-a872-4604-9fb1-d40fe6ab8447"

The process crypts.exe:852 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F9 27 56 36 1E DC 59 4E BC EA 7A 52 BB 76 F4 B7"

[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:1164 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" = "20150221"
"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" = "220"

[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" = "C4 3F 97 99 95 38 D7 8B 18 8C F6 47 31 5E BF CB"

[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:1340 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DB AD 8A 3F 12 D0 42 B0 81 D2 77 5F 20 5B 31 67"

The process WScript.exe:1688 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" = "EB B1 12 1A 09 62 D2 45 61 D8 56 F0 93 E9 B4 EB"

[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"

Dropped PE files

MD5	File path
f3217c2d340154dd5d047817e5d04e6f	c:\Program Files\House\Dorm\Uninstall.exe
0bc576a1cb22187d7924fe9ca8c8e503	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:

198.23.250.133	my.mail.ru
198.23.250.133	m.my.mail.ru
198.23.250.133	vk.com
198.23.250.133	ok.ru
198.23.250.133	m.vk.com
198.23.250.133	odnoklassniki.ru
198.23.250.133	vk.com
198.23.250.133	www.odnoklassniki.ru
198.23.250.133	m.odnoklassniki.ru
198.23.250.133	ok.ru
198.23.250.133	m.ok.ru
198.23.250.133	www.odnoklassniki.ru
198.23.250.133	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

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

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
crypts.exe:852
%original file name%.exe:1164
WScript.exe:1340
WScript.exe:1688
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\$inst\temp_0.tmp (288 bytes)
%Program Files%\House\Dorm\bi2puk.vbs (831 bytes)
%Program Files%\House\Dorm\4.txt (27 bytes)
%Program Files%\House\Dorm\3.txt (15 bytes)
%Program Files%\House\Dorm\Uninstall.exe (3386 bytes)
%Program Files%\House\Dorm\crypts.exe (3725 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 (295 bytes)
%Program Files%\House\Dorm\Uninstall.ini (2 bytes)
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"
Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
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: Language Neutral

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: Language Neutral

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: 10
8fa1d401efdc8f2d6f38889e0ff3ae17
d3134cfecb31d0afe5d12f980881a4a8
aaddd8d4e79e9327162b35db9b96abb5
a393f9f372840a9184d01323243bf08b
47dcbc00a52126aeb8382ce86b5f4892
2601cb0f40ed8f01e052a344ed349383
dc56c69b5607e188be4cdb864cfdc23b
c11c94ee1112ffaa9e96d7e381f9c39d
a8af34d443637a23be69d3887c4f08e6
10bbc7a5cbc14ab1e8a8c45b6a5d5710

Network Activity

URLs

URL	IP
time.windows.com	134.170.185.211

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

WScript.exe_1688:

.text

`.data

.rsrc

@.reloc

ADVAPI32.dll

KERNEL32.dll

NTDLL.DLL

USER32.dll

msvcrt.dll

OLEAUT32.dll

ole32.dll

VERSION.dll

wscript.exe

advapi32.dll

kernel32.dll

%s%s.DLL

wintrust.dll

%d.%d

Invalid parameter passed to C runtime function.

SOFTWARE\Classes\%s\%s

0x%8X

CreateURLMonikerEx

urlmon.dll

@@8X%u

RegCreateKeyA

RegCloseKey

RegOpenKeyA

RegDeleteKeyA

RegCreateKeyExW

RegCreateKeyExA

RegOpenKeyExW

ReportEventW

RegEnumKeyExA

RegOpenKeyExA

GetProcessHeap

GetCPInfo

MsgWaitForMultipleObjects

EnumThreadWindows

wscript.pdb

stdole2.tlbWWW

.ObjectWW

KeyW

WindowsFolderWWW4

%CopyFolderWWL

Windows Script Host (Ver 5.6)W)

Windows Script Host Application InterfaceW%

Windows Script Host Object

ebstrCmdLineW

7Â8t8x8

5Q5F5

Software\Microsoft\Windows Script Host\Settings

Windows Script Host

WScript.CreateObject

WSHRemote.Execute

Software\Microsoft\Active Setup\Installed Components\{89820200-ECBD-11CF-8B85-00AA005B4383}

.\%s.mui

.\%s\%s.mui

%s\%s.mui

%s\%s\%s.mui

%s\%s

Microsoft (R) Windows Based Script Host

5.7.0.16599

Microsoft (R) Windows Script Host

(Windows Script Host (debugging disabled)

Windows Script Host Error

Windows Script Host Input Error

This Unicode version of Windows Script Host will only execute under Windows NT.

Please use the ANSI version of Windows Script Host."

WScript execution time was exceeded on script "%1!ls!".

Script execution was terminated.1Could not locate automation class named "%1!ls!".

Could not connect object.'Could not create object named "%1!ls!".1Initialization of the Windows Script Host failed.6Can't find script engine "%2!ls!" for script "%1!ls!".!Can't change default script host.=An attempt at saving your settings via the //S option failed.(Loading script "%1!ls!" failed (%2!ls!).

Loading your settings failed.,Execution of the Windows Script Host failed.,Unexpected error of the Windows Script Host._Windows Script Host access is disabled on this machine. Contact your administrator for details.

Missing job name.*Unicode is not supported on this platform.

Command line options are saved.4The default script host is now set to "wscript.exe".4The default script host is now set to "cscript.exe".,Successful execution of Windows Script Host.3Successful remote execution of Windows Script Host.

Win32 Error 0x%X

Windows Script Host(Windows Script Host (debugging disabled)

Usage: WScript scriptname.extension [option...] [arguments...]

Use engine for executing script

Changes the default script host to CScript.exe

Changes the default script host to WScript.exe (default)

Prevent logo display: No banner will be shown at execution time

#WScript Error - Windows Script Host!Input Error - Windows Script HostlThis Unicode version of WScript will only execute under Windows NT.

%6!ls! WScript - Script Execution Error!Windows Script Host Remote Script/Remote script object can only be executed once. Unable to execute remote script.

wuauclt.exe_188:

.text

`.data

.rsrc

@.reloc

wuauclt.pdb

GetProcessHeap

KERNEL32.dll

_wcmdln

_amsg_exit

msvcrt.dll

ntdll.dll

ole32.dll

RegCloseKey

RegOpenKeyExW

RegCreateKeyExW

ADVAPI32.dll

USER32.dll

OLEAUT32.dll

SHLWAPI.dll

zcÃ

version="6.0.0.0"

name="Microsoft.Windows.windowsupdate.wuauclt"

true

name="Microsoft.Windows.Common-Controls"

publicKeyToken="6595b64144ccf1df"

wuaueng.dll

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

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

/ReportNow

/ShowWindowsUpdate

/CloseWindowsUpdate

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

Failed to load %s with error %X

wucltui.dll

wucltux.dll

call RunAUClientUI on wucltui.dll/wucltux.dll

Ntdll.dll

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

wuauclt.exe is exiting with code 0xX

wuauclt.exe launched with command line %s

kernel32.dll

WUWeb

Report

7.6.7600.256

Global\WindowsUpdateTracingMutex

WindowsUpdate.log

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Trace

Windows

shell32.dll

%s: %s [

%s: %s

%s\%s

= Module: %s

= Module:

= Process: %s

= Process:

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

wups2.dll

wups.dll

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

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

Microsoft.WindowsUpdate

wupdmgr.exe

Failed to cocreate IShellWindows, 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 IPersist for window %d, error = 0xlX

Window %d is NOT a WU window

Done enumerating windows

Quit for window %d failed: 0xlX

Window %d is a WU window. Attempting to close

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

Got NULL disp interface for window %d

Got %d instead of VT_DISPATCH for window %d

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

Failed to enumerate window %d, error = 0xlX

Found %d explorer windows

Closing WU explorer windows

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\VolatileData

WUAppNotificationWindows

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

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

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

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

%chdhd

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps