Categories: Backdoor

Should I remove “Backdoor:Win32/Zegost.CQ!bit”?

The Backdoor:Win32/Zegost.CQ!bit 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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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.
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What Backdoor:Win32/Zegost.CQ!bit virus can do?

  • Executable code extraction
  • Attempts to connect to a dead IP:Port (1 unique times)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • Deletes its original binary from disk
  • Creates a copy of itself

How to determine Backdoor:Win32/Zegost.CQ!bit?


File Info:

crc32: 92E67BECmd5: 9399aa4aa09d4de98eff4d4b5d8ce792name: server.exesha1: 4c25f2bd8f8db0f4e51d2d7fcb8b75671edd7399sha256: 3dd292831276881652f26148dcadfcbea922cbd31dd27ac22d9f74f7eef8b81bsha512: f7b2a45846ed4714938ef6b0d7b08506b4a88ee2f660b275fb0ed8397d47c2ec3d14114e76a3d80707b201ce55a8515da70820308a79071981fe361476302458ssdeep: 1536:4BkDb71Cykx/jQf+UU1D2SgMtI2EPbZgNOozgJyy9A1K:4BkDb71YbQIASgMtwbZEkH9A1type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Zegost.CQ!bit also known as:

MicroWorld-eScan Gen:Variant.Graftor.101342
FireEye Generic.mg.9399aa4aa09d4de9
Qihoo-360 Win32/Backdoor.92f
McAfee Artemis!9399AA4AA09D
Cylance Unsafe
AegisLab Trojan.Win32.Graftor.4!c
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Gen:Variant.Graftor.101342
K7GW Riskware ( 0040eff71 )
Cybereason malicious.aa09d4
TrendMicro BKDR_ZEGOST.SM34
F-Prot W32/KillAV.AU.gen!Eldorado
APEX Malicious
Avast Win32:Malware-gen
GData Gen:Variant.Graftor.101342
Kaspersky Backdoor.Win32.Lotok.asu
Alibaba Backdoor:Win32/Lotok.dee63308
ViRobot Trojan.Win32.Z.Graftor.270336.IA
Tencent Win32.Backdoor.Lotok.Htcb
Ad-Aware Gen:Variant.Graftor.101342
Emsisoft Gen:Variant.Graftor.101342 (B)
F-Secure Trojan.TR/AD.Farfli.fxmlp
McAfee-GW-Edition BehavesLike.Win32.PWSOnlineGames.dm
Trapmine malicious.high.ml.score
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Farfli
Cyren W32/KillAV.AU.gen!Eldorado
Avira TR/AD.Farfli.fxmlp
Endgame malicious (high confidence)
Arcabit Trojan.Graftor.D18BDE
ZoneAlarm Backdoor.Win32.Lotok.asu
Microsoft Backdoor:Win32/Zegost.CQ!bit
BitDefenderTheta AI:Packer.0EAA17711F
ALYac Gen:Variant.Graftor.101342
MAX malware (ai score=99)
Panda Generic Malware
ESET-NOD32 a variant of Generik.MINNXTI
TrendMicro-HouseCall BKDR_ZEGOST.SM34
Rising Backdoor.Zegost!8.177 (CLOUD)
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_70% (W)

How to remove Backdoor:Win32/Zegost.CQ!bit?

  • 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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