HEUR:Trojan.Win32.Generic (Kaspersky), 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: 83e90fd13d99350ac71bf704f66d8756
SHA1: 0535d56497512ab3527b90ae156a9b47b114d29c
SHA256: 8761eb34518c963989129a81953e878438b43ad06ad506c2a6d0174b3f4718b2
SSDeep: 12288: qUSJ9EnLccox8ybLYc Qzz9h2tM9f5JESQr1ktyY3dY5C/wbT:hJ9EnLcAWUjkhL9fy8L3dYnn
Size: 737280 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: QuickSet
Created at: 2013-04-18 01:42:56
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):
reg.exe:1744
reg.exe:1824
reg.exe:424
reg.exe:1860
%original file name%.exe:892
%original file name%.exe:1924
The Worm injects its code into the following process(es):
%original file name%.exe:1976
File activity
The process %original file name%.exe:1924 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\dum1.tmp (745 bytes)
Registry activity
The process reg.exe:1744 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D2 D0 31 13 32 AD C2 57 5E BD 55 25 B9 1B FD 6A"
Adds a rule to the firewall Windows which allows any network activity:
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:\]
"%original file name%.exe" = "c:\\%original file name%.exe:*:Enabled:Windows Messanger"
The process reg.exe:1824 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "14 DC 0F 93 42 15 3D B9 F7 6E 5F 00 83 80 49 92"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:424 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F3 2B BC BE D0 E6 7F 70 FA 25 35 41 CA 90 00 F9"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:1860 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "32 CD CF 6F 97 63 EE 62 66 0D B1 D7 1E BC 0E 3A"
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\vragen]
"winfocus.exe" = "%Documents and Settings%\%current user%\Application Data\vragen\winfocus.exe:*:Enabled:Windows Messanger"
The process %original file name%.exe:1976 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "67 A1 70 4F 9F 75 4F A6 7A 66 9F 4D 2E F4 A8 D4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"MQRH4C7SO0" = "Marktbot"
[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"MQRH4C7SO0" = "December 3, 2013"
The process %original file name%.exe:1924 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft]
"Melt" = "FALSE"
"Time" = "3"
"Persist" = "FALSE"
"Format" = "Seconds"
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]
"Strings" = "%System%\IMJDC01.exe"
"IMJDC1" = "Strings"
"IMJDC0" = "c:\%original file name%.exe"
Network activity (URLs)
No activity has been detected.
HOSTS file anomalies
No changes have 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):
reg.exe:1744
reg.exe:1824
reg.exe:424
reg.exe:1860
%original file name%.exe:892
%original file name%.exe:1924 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Local Settings\Temp\dum1.tmp (745 bytes)
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Strings" = "%System%\IMJDC01.exe"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"IMJDC1" = "Strings"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"IMJDC0" = "c:\%original file name%.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.