HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Barys.12511 (B) (Emsisoft), Gen:Variant.Barys.12511 (AdAware), GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR (Lavasoft MAS)Behaviour: Trojan-PSW, Trojan, Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 6ab1881ee292b0b12e1535be828a25c1
SHA1: 4f505866d4c6e180890643843ce51a3c61f13f98
SHA256: 16583b809479500942c987e2235870ee018dc835bc341aff3f5bdcd8630c6150
SSDeep: 12288:AwSIoMjoYps9KLZX0iIWb6Oan20w3EUXcgHaea L:BOMjBpsUXhe320W5Xqea
Size: 429056 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Applications Install
Created at: 2014-06-05 10:56:49
Analyzed on: WindowsXP SP3 32-bit
Summary: Backdoor. Malware that enables a remote control of victim's machine.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Backdoor creates the following process(es):
wscript.exe:1836
buzif.exe:1672
System:4
tmp.exe:320
%original file name%.exe:1076
.exe:1112
The Backdoor injects its code into the following process(es):No processes have been created.
File activity
The process System:4 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
\Device\HarddiskVolume1\$Directory (552 bytes)
The process tmp.exe:320 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\tmp17520219.bat (213 bytes)
%Documents and Settings%\%current user%\Application Data\Toqy\buzif.exe (141 bytes)
The process %original file name%.exe:1076 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\mata2.bat (49 bytes)
%System%\drivers\etc\hosts (216 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\mata.bat (47 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ .exe (35 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\rundll32-.txt (2321 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\invs.vbs (78 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp.exe (141 bytes)
The Backdoor deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\mata2.bat (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\mata.bat (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\rundll32-.txt (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\invs.vbs (0 bytes)
Registry activity
The process wscript.exe:1836 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "93 7B 94 29 A5 E4 33 07 91 27 F9 F0 DF 96 A8 CE"
[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\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"mata2.bat" = "mata2"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"
The Backdoor 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 Backdoor 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:
"UNCAsIntranet" = "1"
The Backdoor modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
The process buzif.exe:1672 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "3E EB 80 D0 4E 78 0C 8D 65 A1 6B B7 B9 3E DA 08"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Ukyzs]
"Uteb" = "DE FC 0C 90 BA 55 AE C7 24 9A 3E D3 CB 6E 42 F4"
The process tmp.exe:320 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CC 7A 9D 65 F7 DE 4B 5F DF 6A 20 57 79 91 92 88"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Ukyzs]
"Uteb" = "DE FC 0C 90 BA 55 AE C7 24 9A 3E D3 CB 6E 42 F4"
The process %original file name%.exe:1076 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A5 00 07 B0 2B AC 54 3B D8 FC 0E 32 34 EE B4 2C"
[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"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache]
"LangID" = "09 04"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"tmp.exe" = "tmp"
[HKCU\Software\Microsoft\Ukyzs]
"Uteb" = "DE FC 0C 90 BA 55 AE C7 24 9A 3E D3 CB 6E 42 F4"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"mata.bat" = "mata"
The Backdoor adds the reference to itself to be executed when a user logs on:
[HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "%Documents and Settings%\%current user%\Local Settings\Temp\file.exe"
The Backdoor 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 Backdoor 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:
"UNCAsIntranet" = "1"
The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
The Backdoor deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\@%System%]
"SHELL32.dll,-8964"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache]
"@shdoclc.dll,-880"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\D:]
"Procmon.exe"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\@%System%]
"SHELL32.dll,-9227"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"cmd.exe"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\D:]
"sandbox_svc.exe"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\@%System%]
"SHELL32.dll,-9217"
"SHELL32.dll,-9216"
The process .exe:1112 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E5 3E 65 8D 50 31 3A AC 84 29 6A 1F 6B 51 28 37"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
Dropped PE files
MD5 | File path |
---|---|
9c84359b82628501947bbaf8ef4edc38 | c:\Documents and Settings\"%CurrentUserName%"\Application Data\Toqy\buzif.exe |
e0d21bee6dae44a7c6e1896d7a8c7463 | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\ .exe |
HOSTS file anomalies
The Backdoor modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 216 bytes in size. The following strings are added to the hosts file listed below:
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
127.0.0.1 | www.website.com |
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):
wscript.exe:1836
buzif.exe:1672
System:4
tmp.exe:320
%original file name%.exe:1076
.exe:1112 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
\Device\HarddiskVolume1\$Directory (552 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp17520219.bat (213 bytes)
%Documents and Settings%\%current user%\Application Data\Toqy\buzif.exe (141 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\mata2.bat (49 bytes)
%System%\drivers\etc\hosts (216 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\mata.bat (47 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ .exe (35 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\rundll32-.txt (2321 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\invs.vbs (78 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp.exe (141 bytes) - Remove the references to the Backdoor by modifying the following registry value(s) (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "%Documents and Settings%\%current user%\Local Settings\Temp\file.exe" - Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
- Reboot the computer.
Static Analysis
VersionInfo
Company Name: sitauktrading
Product Name: sitauktrading
Product Version: 1.0.0.0
Legal Copyright: 4877328
Legal Trademarks: sitauktrading
Original Filename: force.exe
Internal Name: force.exe
File Version: 1.0
File Description: invoice
Comments: Þscription%
Language: Language Neutral
Company Name: sitauktradingProduct Name: sitauktradingProduct Version: 1.0.0.0Legal Copyright: 4877328Legal Trademarks: sitauktradingOriginal Filename: force.exeInternal Name: force.exeFile Version: 1.0 File Description: invoiceComments: Þscription%Language: Language Neutral
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.rsrc | 8192 | 5336 | 5632 | 3.00761 | 39b818676c1d76546f5c92ea263c8844 |
.text | 16384 | 422328 | 422400 | 5.25877 | bb9744b9674dc4744b2e4a04da064d74 |
.reloc | 442368 | 12 | 512 | 0.084755 | 707b6b5c76c568b412a254fa89d20621 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
Map
The Backdoor connects to the servers at the folowing location(s):