Categories: Malware

How to remove “Win32:Citadel-Z [Trj]”?

The Win32:Citadel-Z [Trj] 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 Win32:Citadel-Z [Trj] virus can do?

  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Behavioural detection: Injection (inter-process)
  • Anomalous binary characteristics

How to determine Win32:Citadel-Z [Trj]?


File Info:

name: 405437F689AFB43EFC50.mlwpath: /opt/CAPEv2/storage/binaries/c8a954aeb10ea41ab69f7cc1483b12a4bd9c59e6537f912fdf2552e77c2ce4aecrc32: A0FF1029md5: 405437f689afb43efc508d67204318d3sha1: 1461f9ea37d9589574e91f057f358fa92611d2c9sha256: c8a954aeb10ea41ab69f7cc1483b12a4bd9c59e6537f912fdf2552e77c2ce4aesha512: 2860b4a5e01c87a0fe73b60f2f4735be9c1132e7cfe782d74dd6918679974d493162e002a89592146e0a5f3a62d80287b003736eaa62e09157881f39cbd51dccssdeep: 6144:X4Csg/wAcsP4YeUPeYOwToSAw3HgNzx5Nod3T:ovdAFChSATV5N+Dtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1D9240246BE6D9DB1C60456399846D28A5B242F807C21E34FD6F3FA6FE83BB11849F350sha3_384: 35c8883743aff56e050cb120fd856cda55834adf3629f5f4cec81b9bd4d6973537bb69365f3522cab81c669b9e28c903ep_bytes: 558bec83c4f0b83c414000e8fcf4fffftimestamp: 1992-06-19 22:22:17

Version Info:

CompanyName: SEIKO EPSON CORP.FileDescription: EPSON ScanFileVersion: 3.70LegalCopyright: Copyright (C) SEIKO EPSON CORP. 2002OriginalFilename: Escndv.exeProductName: EPSON ScanProductVersion: 3.7Translation: 0x0000 0x04b0

Win32:Citadel-Z [Trj] also known as:

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Zbot.lzwQ
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Fugrafa.11158
FireEye Generic.mg.405437f689afb43e
McAfee PWS-Zbot-FAMH!405437F689AF
Cylance Unsafe
Zillya Trojan.Zbot.Win32.79383
Sangfor Hacktool.Win32.Obfuscator.ACD
K7AntiVirus Trojan ( 0040f2c31 )
Alibaba VirTool:Win32/Obfuscator.bf6ba78d
K7GW Trojan ( 0040f2c31 )
Cybereason malicious.689afb
Arcabit Trojan.Fugrafa.D2B96
VirIT Backdoor.Win32.Generic.BNVG
Symantec Trojan!im
ESET-NOD32 Win32/Spy.Zbot.AAO
APEX Malicious
Paloalto generic.ml
ClamAV Win.Trojan.Zbot-9763500-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Fugrafa.11158
NANO-Antivirus Trojan.Win32.Panda.dzbnow
Avast Win32:Citadel-Z [Trj]
Tencent Malware.Win32.Gencirc.114de45f
Ad-Aware Gen:Variant.Fugrafa.11158
Emsisoft Gen:Variant.Fugrafa.11158 (B)
Comodo TrojWare.Win32.Kryptik.NJDA@4rd0tu
DrWeb Trojan.PWS.Panda.3015
VIPRE Trojan.Win32.Ransomware.B (v)
TrendMicro TSPY_ZBOT.SM16
McAfee-GW-Edition PWS-Zbot-FAMH!405437F689AF
Sophos Mal/Generic-R + Mal/EncPk-AGD
Ikarus Trojan.Win32.Yakes
Avira TR/Oficla.887956
MAX malware (ai score=99)
Antiy-AVL Trojan[Spy]/Win32.Zbot
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft PWS:Win32/Zbot!CI
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Fugrafa.11158
Cynet Malicious (score: 99)
AhnLab-V3 Trojan/Win32.Jorik.R39475
VBA32 Malware-Cryptor.Inject.gen
ALYac Gen:Variant.Fugrafa.11158
TACHYON Trojan-Spy/W32.DP-ZBot.214016
Malwarebytes Ransom.FileCryptor
TrendMicro-HouseCall TSPY_ZBOT.SM16
Rising Spyware.Zbot!8.16B (CLOUD)
Yandex TrojanSpy.Zbot!8r+w0brEPsM
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.7164915.susgen
Fortinet W32/Injector.WCT!tr
BitDefenderTheta AI:Packer.853A74E218
AVG Win32:Citadel-Z [Trj]
Panda Trj/Velphi.a
CrowdStrike win/malicious_confidence_100% (D)

How to remove Win32:Citadel-Z [Trj]?

  • 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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