Categories: Trojan

TrojanDropper:Win32/Zegost.B removal guide

The TrojanDropper:Win32/Zegost.B 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 TrojanDropper:Win32/Zegost.B virus can do?

  • At least one process apparently crashed during execution
  • Presents an Authenticode digital signature
  • Drops a binary and executes it
  • Unconventionial binary language: Chinese (Simplified)
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • Uses Windows utilities for basic functionality
  • Attempts to stop active services
  • Crashed cuckoomon during analysis. Report this error to the Github repo.
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Checks the system manufacturer, likely for anti-virtualization
  • Creates a copy of itself
  • Anomalous binary characteristics

Related domains:

z.whorecord.xyz
a.tomx.xyz

How to determine TrojanDropper:Win32/Zegost.B?


File Info:

crc32: DB5881E2md5: dda0d29ed1efd488df06c0cbda0101a7name: server.exesha1: 9a29925b1ae4418ad38ceced4d28a70c8f985645sha256: b91412cc299d8163eac9c4f7d9b987cbfb07e83e1842000d70a967a4a3d562a9sha512: 2a02ed3dca65cc9310b4c5de268d2f5d3264069511638d2eae372a924253fbfc7bb3be48fe6bdc187e46166d93014e81212860fd1282cb2db469530a2b13029fssdeep: 6144:SsIZ6nW8QmBTyPRqyhYPbncTBlhHrindnkv0oX:/RW8uJq8YPbncT3ptype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: (C) Microsoft Corporation. All rights reserved.InternalName: SPUNINST.EXEFileVersion: 6.3.0004.1 built by: dnsrvCompanyName: Microsoft CorporationProductName: Microsoft(R) Windows(R) Operating SystemProductVersion: 6.3.0004.1FileDescription: Windows Service Pack Uninstall OriginalFilename: SPUNINST.EXETranslation: 0x0804 0x04b0

TrojanDropper:Win32/Zegost.B also known as:

Bkav W32.ZegostQKB.Trojan
ClamAV Win.Spyware.78740-1
FireEye Generic.mg.dda0d29ed1efd488
CAT-QuickHeal TrojanDropper.Zegost.C5
McAfee BackDoor-CEP.gen.cn
Malwarebytes Trojan.Dropper
Sangfor Malware
K7AntiVirus Trojan ( 0016e1f71 )
BitDefender Gen:Variant.Zegost.2
K7GW Trojan ( 0016e1f71 )
CrowdStrike win/malicious_confidence_100% (W)
Invincea heuristic
Baidu Win32.Backdoor.Zegost.b
F-Prot W32/Zegost.C.gen!Eldorado
Symantec Trojan Horse
TotalDefense Win32/Zegost.CJ
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
GData Gen:Variant.Zegost.2
Kaspersky Trojan-PSW.Win32.Bjlog.dtwr
Alibaba TrojanPSW:Win32/Bjlog.d2e661aa
NANO-Antivirus Trojan.Win32.Bjlog.drshei
ViRobot Trojan.Win32.PSWBjlog.200704
AegisLab Trojan.Win32.Bjlog.lmoo
MicroWorld-eScan Gen:Variant.Zegost.2
Tencent Backdoor.Win32.Zegost.aaa
Endgame malicious (high confidence)
Emsisoft Gen:Variant.Zegost.2 (B)
Comodo Backdoor.Win32.Zegost.B@1qlsm2
F-Secure Backdoor:W32/Bjlog.D
DrWeb BackDoor.Zegost.48
VIPRE Trojan.Win32.Generic.pak!cobra
TrendMicro TROJ_REDOS.SME
Trapmine malicious.high.ml.score
Sophos Mal/PWS-GA
SentinelOne DFI – Malicious PE
Cyren W32/Zegost.L.gen!Eldorado
Jiangmin Trojan/PSW.Bjlog.bvd
Webroot W32.Trojan.Gen
Avira TR/PSW.Bjlog.lfzb
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan[PSW]/Win32.Bjlog.dtwr
Microsoft TrojanDropper:Win32/Zegost.B
Arcabit Trojan.Zegost.2
SUPERAntiSpyware Trojan.Agent/Gen-Zegost
ZoneAlarm Trojan-PSW.Win32.Bjlog.dtwr
AhnLab-V3 Dropper/Zegost.206136
Acronis suspicious
VBA32 TScope.Malware-Cryptor.SB
ALYac Gen:Variant.Zegost.2
TACHYON Trojan-PWS/W32.Bjlog.209384
Ad-Aware Gen:Variant.Zegost.2
ESET-NOD32 a variant of Win32/Redosdru.FP
TrendMicro-HouseCall TROJ_REDOS.SME
Rising Backdoor.Win32.GenFxj.c (CLOUD)
Yandex Trojan.Zegost.Gen.5
MAX malware (ai score=81)
MaxSecure Trojan.Malware.6565302.susgen
Fortinet W32/Bjlog.GL!tr
BitDefenderTheta AI:Packer.4D1960461F
AVG Win32:Zegost-C [Trj]
Cybereason malicious.ed1efd
Panda Generic Malware
Qihoo-360 Dropper.Win32.Zegost.A

How to remove TrojanDropper:Win32/Zegost.B?

  • 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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