Backdoor.Win32.Farfli_46807bc333

by malwarelabrobot on October 15th, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Trojan.Win32.Inject!IK (Emsisoft), Backdoor.Win32.Farfli.FD, Trojan.Win32.Rimecud.FD, GenericAutorunWorm.YR, BackdoorFarfli.YR, mzpefinder_pcap_file.YR (Lavasoft MAS)
Behaviour: Trojan, Backdoor, Worm, WormAutorun


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Technical Details
Removal Recommendations

MD5: 46807bc3336b66f922baff1f1330bd26
SHA1: f43d7af9b375a1e38d2cdb99f5eeee91c987d141
SHA256: 4174333c282d26c060a942a55a22dc949b4badbb1f5ab46da008330ab3805048
SSDeep: 1536:GmGiLLpraV/kZD4KTbmsPqB0GZBUMbGlVNbngqKsO95 tx/gVjnKiuDHpDOXHj9a:Gun9Q0rMbSgqKR95 tx/AjnkDJ6XZ7
Size: 187392 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: Armadillov171, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, UPolyXv05_v6
Company: no certificate found
Created at: 2010-06-14 06:24:16


Summary:

Backdoor. Malware that enables a remote control of victim's machine.

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 Backdoor's file once a user opens a drive's folder in Windows Explorer.


Process activity

The Backdoor creates the following process(es):

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

247994.exe:1064

File activity

Registry activity

The process 247994.exe:1064 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9F 67 69 77 24 12 C3 7C D0 BF 98 7B B2 D2 13 FB"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"weby" = "%System%\joloceg.exe"

Network activity (URLs)

URL IP
hxxp://loca.betrule.com/c9000.exe 188.138.89.106
www.treibholzundmeer.de 188.138.89.106


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 Backdoor's file once a user opens a drive's folder in Windows Explorer.


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 the original Backdoor's process (How to End a Process With the Task Manager).
  2. Delete the original Backdoor file.
  3. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "weby" = "%System%\joloceg.exe"

  4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
  6. Reboot the computer.

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