Categories: Backdoor

Backdoor:Win32/Zegost.BZ removal tips

The Backdoor:Win32/Zegost.BZ 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 Backdoor:Win32/Zegost.BZ virus can do?

  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Deletes its original binary from disk
  • Attempts to stop active services
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Uses suspicious command line tools or Windows utilities

Related domains:

www.sousouweb.com

How to determine Backdoor:Win32/Zegost.BZ?


File Info:

crc32: 2E150E4Amd5: 61c7d5bda12819606c07aefcc46bf11bname: jie.exesha1: 9169b77e5fa9afc8b4c38a2ce3e4829ca9ef5e5bsha256: 551fde59b8efe2adcd372142aede63dd6be307f337ccba043fb7089b32d07a6dsha512: dae76417b5bb5fc116a645fa9f6c29137bb5a7674872b31e62f6c3b0f96c12d5cb6d7b6a77c6f47ae507db32e6b7d1a1983d54f96dc748e15307732bf9771231ssdeep: 1536:w/NYpDeeohStyDyeuYkium1QF5AyAvMFssgoMjid4xLnCYG0n80:w/NYtUStyCYHX1QwyWRsPMjG4LCYptype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Backdoor:Win32/Zegost.BZ also known as:

DrWeb Trojan.KillProc.22090
MicroWorld-eScan Dropped:Trojan.GenericKD.32998577
FireEye Generic.mg.61c7d5bda1281960
CAT-QuickHeal Backdoor.Farfli.O
Qihoo-360 Win32/Trojan.92e
ALYac Dropped:Trojan.GenericKD.32998577
Zillya Trojan.Farfli.Win32.34049
Sangfor Malware
K7AntiVirus Trojan ( 0051a9ba1 )
BitDefender Dropped:Trojan.GenericKD.32998577
K7GW Trojan ( 0051a9ba1 )
Cybereason malicious.da1281
BitDefenderTheta AI:Packer.ACBB85FC1F
F-Prot W32/OnlineGames.HM.gen!Eldorado
ESET-NOD32 a variant of Win32/Farfli.DV
APEX Malicious
Avast Win32:Farfli-AX [Trj]
ClamAV Win.Dropper.Gh0stRAT-6992317-0
GData Dropped:Trojan.GenericKD.32998577
Kaspersky HEUR:Trojan.Win32.Farfli.gen
Alibaba Backdoor:Win32/Zegost.ee42dde7
NANO-Antivirus Trojan.Win32.KillProc.ctgocl
ViRobot Trojan.Win32.Z.Farfli.71680
AegisLab Trojan.Win32.Farfli.4!c
Tencent Malware.Win32.Gencirc.10b8ab0b
Ad-Aware Dropped:Trojan.GenericKD.32998577
Sophos Troj/Zegost-O
Comodo TrojWare.Win32.Farfli.LK@4pmigc
F-Secure Trojan.TR/Crypt.ZPACK.Gen2
VIPRE Trojan-Dropper.Win32.Farfli.e (v)
TrendMicro TROJ_GEN.R02DC0DA620
McAfee-GW-Edition BehavesLike.Win32.Ransom.lc
Emsisoft Dropped:Trojan.GenericKD.32998577 (B)
Ikarus Backdoor.Win32.Delf
Cyren W32/OnlineGames.HM.gen!Eldorado
Jiangmin Trojan.Generic.dirsu
Avira TR/Crypt.ZPACK.Gen2
Endgame malicious (moderate confidence)
Arcabit Trojan.Generic.D1F784B1
ZoneAlarm HEUR:Trojan.Win32.Farfli.gen
Microsoft Backdoor:Win32/Zegost.BZ
McAfee Artemis!61C7D5BDA128
MAX malware (ai score=87)
VBA32 BScope.Trojan.Downloader
Cylance Unsafe
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_GEN.R02DC0DA620
Rising Dropper.Farfli!8.911 (CLOUD)
Yandex Trojan.Farfli!gdFo88Gn8ss
SentinelOne DFI – Malicious PE
eGambit Trojan.Generic
Fortinet W32/Magania.IKHG!tr
AVG Win32:Farfli-AX [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_80% (W)
MaxSecure Trojan.Malware.11374565.susgen

How to remove Backdoor:Win32/Zegost.BZ?

  • 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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