HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic.pak!cobra (VIPRE), Trojan.SuspectCRC!IK (Emsisoft), Worm.Win32.Ainslot.VB.FD, GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)Behaviour: Trojan, Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: a8e87a97d578d58e4879770c988841db
SHA1: 2fc9f6411e43bbb500470ef8894d91a57b11d172
SHA256: 37d95d87fe7b6e9994d8eecaf0c5395083525c5174d3dbf909152e6be687cc62
SSDeep: 6144:1Z31slViQuB5TPUITCdzjPKd TnKdOr5DtljMF1q:SlYQungQC1jdnKkVDPje1q
Size: 348168 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: OpenInstall
Created at: 2011-06-23 21:53:49
Summary: Worm. A program that is primarily replicating on networks or removable drives.
Dynamic Analysis
Payload
Behaviour | Description |
---|---|
WormAutorun | A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Worm's file once a user opens a drive's folder in Windows Explorer. |
Process activity
The Worm creates the following process(es):
a8e87a97d578d58e4879770c988841db.exe:596
reg.exe:2024
reg.exe:1792
reg.exe:576
reg.exe:2004
The Worm injects its code into the following process(es):
a8e87a97d578d58e4879770c988841db.exe:1456
File activity
The process a8e87a97d578d58e4879770c988841db.exe:1456 makes changes in a file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\k-one (32 bytes)
%Documents and Settings%\%current user%\Application Data\bot.exe (689 bytes)
Registry activity
The process a8e87a97d578d58e4879770c988841db.exe:1456 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "FF A8 0A 81 85 99 9F AD 5F 11 5D 75 3F A6 03 F4"
[HKCU\Software\Microsoft\Active Setup\Installed Components\{FCC7A5E0-ABD7-659B-EC78-4ABDEA2EFB7C}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"OQ5R2IF9S3" = "September 6, 2013"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run]
"system32" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"OQ5R2IF9S3" = "K-ONE"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{FCC7A5E0-ABD7-659B-EC78-4ABDEA2EFB7C}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"system32" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"system32" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
The process reg.exe:2024 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "49 EB D7 99 AB D0 DA BC 74 0F F7 D7 3A D6 15 D2"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:1792 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "97 47 6E 68 20 5E BF 68 AF FB F5 14 10 E2 DF 0D"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:576 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "80 04 90 50 B3 7F 6F 9D 05 E8 F0 12 D2 8E 13 9C"
Adds a rule to the firewall Windows which allows any network activity:
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%Documents and Settings%\%current user%\Application Data]
"bot.exe" = "%Documents and Settings%\%current user%\Application Data\bot.exe:*:Enabled:Windows Messanger"
The process reg.exe:2004 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "39 0E 6B 1B 7B 14 27 E7 59 49 61 26 BC 99 D2 07"
Adds a rule to the firewall Windows which allows any network activity:
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:]
"a8e87a97d578d58e4879770c988841db.exe" = "c:\a8e87a97d578d58e4879770c988841db.exe:*:Enabled:Windows Messanger"
Network activity (URLs)
No activity has been detected.
Rootkit activity
No anomalies have been detected.
Propagation
A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Worm's file once a user opens a drive's folder in Windows Explorer.
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):
a8e87a97d578d58e4879770c988841db.exe:596
reg.exe:2024
reg.exe:1792
reg.exe:576
reg.exe:2004 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Application Data\k-one (32 bytes)
%Documents and Settings%\%current user%\Application Data\bot.exe (689 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"system32" = "%Documents and Settings%\%current user%\Application Data\bot.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"system32" = "%Documents and Settings%\%current user%\Application Data\bot.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.