Malware

Mal/Behav-421 removal guide

Malware Removal

The Mal/Behav-421 is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
6-day free trial available.

What Mal/Behav-421 virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Starts servers listening on 127.0.0.1:0
  • Expresses interest in specific running processes
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Looks up the external IP address
  • Checks for the presence of known windows from debuggers and forensic tools
  • The following process appear to have been packed with Themida: Windows Update.exe, predator.exe
  • Checks for the presence of known devices from debuggers and forensic tools
  • Detects the presence of Wine emulator via registry key
  • Checks the version of Bios, possibly for anti-virtualization
  • Detects VirtualBox through the presence of a registry key
  • Creates a copy of itself
  • Anomalous binary characteristics

Related domains:

whatismyipaddress.com

How to determine Mal/Behav-421?


File Info:

crc32: BA2CA89C
md5: da243d90de4dac453e3119789281a4bb
name: predator.exe
sha1: ce4ca62db3a7cee60b14d3de77c81b9d46687d84
sha256: 7bd14d4a422d068f59772a3dd54f0bf33ed28f9d95a5d6b5105d31896d0e6af7
sha512: c00da9bc7caa6f623ad619e3f9c1fdd58f2f87b31f4321a5d3bae8310a472252eddfd527fbf861d9f320d01ad58564e7bd88f4394c1bbf3d7ee1ec7f75d6f9a4
ssdeep: 98304:mc6Iz5UaMllo1gM437ZhjzvnhQ/m0ZNK6ZDpEo6F7RYA5A:mc3ufllAgM437Dz76x+T7Ry
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Mal/Behav-421 also known as:

BkavW32.HfsAutoB.
MicroWorld-eScanGen:Trojan.Heur.@B1au8Rx1ll
McAfeeGeneric BackDoor.adv
MalwarebytesTrojan.FakeMS.Gen
BitDefenderGen:Trojan.Heur.@B1au8Rx1ll
SymantecML.Attribute.HighConfidence
KasperskyUDS:DangerousObject.Multi.Generic
NANO-AntivirusTrojan.Win32.FKM.fjfmyn
Ad-AwareGen:Trojan.Heur.@B1au8Rx1ll
TrustlookPE.Malware.General (score:9)
SophosMal/Behav-421
F-SecureGen:Trojan.Heur.@B1au8Rx1ll
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.Generic.rc
EmsisoftGen:Trojan.Heur.@B1au8Rx1ll (B)
WebrootW32.Malware.gen
AviraTR/Crypt.FKM.Gen
Endgamemalicious (high confidence)
ArcabitTrojan.Heur.E3D308
ZoneAlarmUDS:DangerousObject.Multi.Generic
GDataGen:Trojan.Heur.@B1au8Rx1ll
AhnLab-V3Trojan/Win32.Agent.R176805
MAXmalware (ai score=94)
CylanceUnsafe
RisingMalware.Heuristic!ET#100% (RDM+:cmRtazozHQLiVMkSNd2jvPEyoBnN)
SentinelOnestatic engine – malicious
AVGWin32:Malware-gen
Cybereasonmalicious.0de4da
AvastWin32:Malware-gen
CrowdStrikemalicious_confidence_90% (D)

How to remove Mal/Behav-421?

Mal/Behav-421 removal tool
  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.

About the author

Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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