Categories: Malware

About “VirTool:Win32/Obfuscator.XZ” infection

The VirTool:Win32/Obfuscator.XZ 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.

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What VirTool:Win32/Obfuscator.XZ virus can do?

  • Executable code extraction
  • Creates RWX memory
  • Expresses interest in specific running processes
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • The binary likely contains encrypted or compressed data.
  • The executable is likely packed with VMProtect
  • Detects Sandboxie through the presence of a library
  • Network activity detected but not expressed in API logs
  • Anomalous binary characteristics

How to determine VirTool:Win32/Obfuscator.XZ?


File Info:

crc32: 8C2C326Amd5: 9d458fcd79a13b90bc458f989f43f47fname: task1.exe.mentahsha1: c5e1585b2f018b5252c68728b5135b505ac6a156sha256: 863ed21ca68691dfb5131f444984c8d36faa92e09c22826621e85989d900814csha512: 1dd8e96909f96991b9fdc4b3876ae1510a4ed2365be5c8ee0e02b48bc58c4a07404b8ff7699c222fdef92599c2b6711af41be4696cb3b4afd900033e8108265cssdeep: 12288:aeNE+4Qj1cpdmbqMJX3RIlbfPiB1vAY+43ZQZNNfeX0:7E+n10MbIlbfP21vGHfeX0type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

VirTool:Win32/Obfuscator.XZ also known as:

Bkav HW32.Packed.
MicroWorld-eScan Trojan.GenericKD.33035527
FireEye Generic.mg.9d458fcd79a13b90
Cylance Unsafe
K7AntiVirus Trojan ( 004b8cfb1 )
BitDefender Trojan.GenericKD.33035527
K7GW Trojan ( 004b8cfb1 )
Cybereason malicious.b2f018
Invincea heuristic
BitDefenderTheta Gen:NN.ZexaF.34084.AKW@aOzRMrgi
F-Prot W32/SuspPack.DX.gen!Eldorado
Symantec Packed.Vmpbad!gen4
ESET-NOD32 a variant of Win32/Packed.VMProtect.AAH
TrendMicro-HouseCall TROJ_GEN.R04AC0DB620
Avast Win32:Trojan-gen
GData Trojan.GenericKD.33035527
APEX Malicious
Rising Malware.Heuristic!ET#94% (RDMK:cmRtazq9qOD40Nfe29O6AvAJcRsJ)
Ad-Aware Trojan.GenericKD.33035527
Emsisoft Trojan.GenericKD.33035527 (B)
Comodo Virus.Win32.Virut.CE@1fhkga
F-Secure Trojan.TR/Black.Gen2
TrendMicro TROJ_GEN.R04AC0DB620
McAfee-GW-Edition BehavesLike.Win32.Generic.gc
Trapmine malicious.high.ml.score
Sophos Mal/VMProtBad-A
SentinelOne DFI – Malicious PE
eGambit Unsafe.AI_Score_99%
Avira TR/Black.Gen2
MAX malware (ai score=83)
Endgame malicious (high confidence)
Arcabit Trojan.Generic.D1F81507
Microsoft VirTool:Win32/Obfuscator.XZ
Acronis suspicious
ALYac Trojan.GenericKD.33035527
AVG Win32:Trojan-gen
CrowdStrike win/malicious_confidence_100% (W)

How to remove VirTool:Win32/Obfuscator.XZ?

  • 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.
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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