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The Internet threat alert status is currently normal. At present, no major epidemics or other serious incidents have been recorded by Kaspersky Lab’s monitoring service. Internet threat level: 1

Trojan.Win32.Agent.dfab

Detected Jan 04 2010 12:26 GMT
Released Jan 04 2010 16:38 GMT
Published Mar 24 2011 14:43 GMT

Technical Details
Payload
Removal instructions

Technical Details

This Trojan delivers a malicious payload to the user's computer. It is a Windows application (PE EXE file). It is 19 456 bytes in size. It is written in C++.


Payload

Once launched, the Trojan decrypts and extracts the following file from its body to the current user's temporary directory: %Temp%<rnd1>.tmp where <rnd1> is a random set of numbers and letters.

This file is 27 136 bytes in size. It is detected by Kaspersky Anti-Virus as Trojan.Win32.Agent.daec.

Then, the Trojan loads the extracted file to its address space and launches the malicious code contained within it.


Removal instructions

If your computer does not have an antivirus, and is infected by this malicious program, follow the instructions below to delete it:

  1. Delete the original Trojan file (its location will depend on how the program originally penetrated the infected computer).
  2. Delete the following files:
    %Temp%\<rnd1>.tmp
    where <rnd1> is a random set of numbers and letters.
  3. Perform a full scan of the computer using Kaspersky Anti-Virus with up-to-date antivirus databases (download a trial version).


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Trojan

This type of behaviour covers malicious programs that delete, block, modify, or copy data, disrupt computer or network performance, but which cannot be classified under any of the behaviours identified above.

This classification also covers “multipurpose” Trojan programs, i.e. those that are capable of conducting several actions at once and which demonstrate several Trojan behaviours in a single program. This means they cannot be indisputably classified as having any single behaviour.


Other versions

Aliases

Trojan.Win32.Agent.dfab (Kaspersky Lab) is also known as:

  • Trojan: Generic Dropper.mx (McAfee)
  • Trojan: Generic Dropper.mx (McAfee)
  • Mal/FakeAV-BT (Sophos)
  • Mal/FakeAV-BT (Sophos)
  • W32/Sasfis.A (FPROT)
  • W32/Sasfis.A (FPROT)
  • Trojan:Win32/Oficla.E (MS(OneCare))
  • Trojan:Win32/Oficla.E (MS(OneCare))
  • Trojan.Advload.9 (DrWeb)
  • Trojan.Advload.9 (DrWeb)
  • Gen:Trojan.Heur.TP.bqW@biqyHRb (BitDef7)
  • Gen:Trojan.Heur.TP.bqW@biqyHRb (BitDef7)
  • Trojan.Agent!fBmZAMHv9q4 (VirusBuster)
  • Trojan.Agent!fBmZAMHv9q4 (VirusBuster)
  • Win32:Oficla-E [Trj] (AVAST)
  • Win32:Oficla-E [Trj] (AVAST)
  • Trojan.Win32.Oflica (Ikarus)
  • Trojan.Win32.Oflica (Ikarus)
  • Generic15.AFWF (AVG)
  • Generic15.AFWF (AVG)
  • W32/Suspicious_Gen2.HGXJS (Norman)
  • W32/Suspicious_Gen2.HGXJS (Norman)
  • Trojan.Win32.Generic.126B2FAC (Rising)
  • Trojan.Win32.Generic.126B2FAC (Rising)
  • Trojan.Win32.Agent.dfab [AVP] (FSecure)
  • Trojan.Win32.Agent.dfab [AVP] (FSecure)
  • TROJ_SASFIS.SMP (TrendMicro)
  • TROJ_SASFIS.SMP (TrendMicro)
  • Trojan.Agent!fBmZAMHv9q4 (VirusBusterBeta)
  • Trojan.Agent!fBmZAMHv9q4 (VirusBusterBeta)