Categories: Trojan

Win32/TrojanDownloader.Wauchos.AD removal tips

The Win32/TrojanDownloader.Wauchos.AD 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/TrojanDownloader.Wauchos.AD virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Enumerates the modules from a process (may be used to locate base addresses in process injection)
  • Enumerates running processes
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Chinese
  • The binary likely contains encrypted or compressed data.
  • Removes Security and Maintenance icon from Start menu, Taskbar and notifications
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Executed a process and injected code into it, probably while unpacking
  • Exhibits behavior characteristic of Andromeda/Gamarue malware
  • Detects Sandboxie through the presence of a library
  • Behavioural detection: Injection (inter-process)
  • Attempts to stop active services
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Attempts to disable UAC
  • Attempts to modify user notification settings

Related domains:

bing.com
yahoo.com

How to determine Win32/TrojanDownloader.Wauchos.AD?


File Info:

name: 3D9CCF3F2A72F6BFD17F.mlwpath: /opt/CAPEv2/storage/binaries/f49d9873ca9bdbcc95917f3a825057930a472d29125ef8c8560f0dcd64d45ee0crc32: 0F3F2F92md5: 3d9ccf3f2a72f6bfd17f9a623fdc0327sha1: cf720ffd33cc38e64c064ddbec28fbe0de12697asha256: f49d9873ca9bdbcc95917f3a825057930a472d29125ef8c8560f0dcd64d45ee0sha512: a2bfb2a2f7d7d298e9fa02e05c71e495dc1e5663dc44fe19951e168b08af0971d22adf37aa07e5462f8ac0aa90c78114b5c6bd746c9d128e79535162658a8488ssdeep: 1536:PDNRifg+FC4AMY1bcoKCmObczfXkzYbLH2Zuy:PDjiR6CofmXznbb2Uytype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1A7A38D0A1A431123E5329DF2DBEA40E4C7FCBD433351A8EFE3946C5846F19A97922D79sha3_384: 3ecb708499ac73f1f8e93e02d24258a90dc98aad044dea8f05a5b802b6c3bfae171e56e7256869e46452e691b39ba835ep_bytes: 558bec6aff68807a400068666a400064timestamp: 2014-06-01 05:38:48

Version Info:

0: [No Data]

Win32/TrojanDownloader.Wauchos.AD also known as:

Elastic malicious (high confidence)
Cynet Malicious (score: 100)
FireEye Generic.mg.3d9ccf3f2a72f6bf
CAT-QuickHeal TrojanPWS.Zbot.AP4
McAfee PWSZbot-FXE!3D9CCF3F2A72
Cylance Unsafe
K7AntiVirus Trojan ( 0055e3991 )
K7GW Trojan ( 0055e3991 )
Cybereason malicious.f2a72f
Cyren W32/Trojan.TVAH-3461
Symantec Trojan.Gen.MBT
ESET-NOD32 Win32/TrojanDownloader.Wauchos.AD
APEX Malicious
ClamAV Win.Trojan.Injector-6417490-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Heur.Zboter.5
NANO-Antivirus Trojan.Win32.Zbot.dbdlup
MicroWorld-eScan Gen:Heur.Zboter.5
Avast Win32:Crypt-REG [Trj]
Tencent Win32.Trojan.Generic.Lney
Ad-Aware Gen:Heur.Zboter.5
Emsisoft Gen:Heur.Zboter.5 (B)
DrWeb Trojan.Emotet.21
VIPRE Trojan.Win32.Generic.pak!cobra
TrendMicro TROJ_MALKRYP.SM5
McAfee-GW-Edition PWSZbot-FXE!3D9CCF3F2A72
Sophos ML/PE-A + Troj/Zbot-IMB
SentinelOne Static AI – Suspicious PE
GData Gen:Heur.Zboter.5
Jiangmin TrojanSpy.Zbot.edzi
MaxSecure Trojan.Malware.300983.susgen
Avira TR/Dropper.Gen
Antiy-AVL Trojan/Generic.ASMalwS.A5B6AF
Arcabit Trojan.Zboter.5
Microsoft Trojan:Win32/DllCheck.A!MSR
AhnLab-V3 Trojan/Win32.Zbot.R109406
BitDefenderTheta Gen:NN.ZexaF.34294.gq0@auwAsNo
ALYac Gen:Heur.Zboter.5
MAX malware (ai score=87)
VBA32 SScope.Malware-Cryptor.Hlux
Malwarebytes Spyware.Zbot.ED
TrendMicro-HouseCall TROJ_MALKRYP.SM5
Rising Malware.Heuristic!ET#90% (RDMK:cmRtazoxpQx5YZ91ShY+rPk0hqmX)
Yandex Trojan.GenAsa!hkYi5irmLwM
Ikarus Trojan.Zbot
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.MFCE!tr
AVG Win32:Crypt-REG [Trj]
CrowdStrike win/malicious_confidence_100% (D)

How to remove Win32/TrojanDownloader.Wauchos.AD?

  • 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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