Categories: Trojan

Trojan.Agent.ECUO (B) removal tips

The Trojan.Agent.ECUO (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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What Trojan.Agent.ECUO (B) virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Unconventionial language used in binary resources: Russian
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Authenticode signature is invalid
  • Created a process from a suspicious location
  • Creates a copy of itself

How to determine Trojan.Agent.ECUO (B)?


File Info:

name: 806B22B8130CA7080827.mlwpath: /opt/CAPEv2/storage/binaries/3f8dfc5f318cee9da6b9eb30bcfd0003696e0246c53e1b6f2619ed9cca8e3870crc32: 8853D2CAmd5: 806b22b8130ca708082794575356c640sha1: fe2e44709d3fe84602d437b9d7bc47761913693dsha256: 3f8dfc5f318cee9da6b9eb30bcfd0003696e0246c53e1b6f2619ed9cca8e3870sha512: 773d39337677e3a2d702cfc942b1ebe28567a4dd3ff635150c0f7c2bc327c0bd495bd3e202d0e7eba5333d3738a16868b1bcaea10ccaf881f9a21192daef56b6ssdeep: 196608:DRpRcVF3qdrC6ZOov2TMOlIXoPVnrkhjJlOkD1kA+yfgoEFb:NpRcv3qdrC6MoeMXCOjJlCyqtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1ED86331B3F576458CCA888B74C570E3C6C3A09D5B637DD2AF6418E198E4E4F8BCC265Asha3_384: a0ddc19ba0193afe8fc60d7915ba25a4eb94bfe0c3e6263ba62e945c8bd0a06e4e1790ec1ce45fe11dd4b9818cd9db93ep_bytes: 60be00804b008dbe0090f4ff57eb0b90timestamp: 2008-05-30 04:46:30

Version Info:

CompanyName: AVG Technologies CZ, s.r.o.FileDescription: AVG Tray MonitorFileVersion: 9.0.0.871InternalName: avgtrayLegalCopyright: Copyright © 2010 AVG Technologies CZ, s.r.o.OriginalFilename: avgtray.exeProductName: AVG Internet SecurityProductVersion: 9.0.0.871PrivateBuild: Win32 Release_UnicodeSpecialBuild: Avg8VC8_2010_1109_133319(871), SVNRev 145063 (/branches/release/SmallUpdate9-12)Translation: 0x0409 0x04e4

Trojan.Agent.ECUO (B) also known as:

Lionic Worm.Win32.Kolab.p!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Agent.ECUO
FireEye Generic.mg.806b22b8130ca708
CAT-QuickHeal Worm.SlenfBot.Gen
ALYac Trojan.Agent.ECUO
Cylance Unsafe
Zillya Worm.Kolab.Win32.5201
Sangfor Trojan.Win32.Sefnit.R
K7AntiVirus Trojan ( 0020d11f1 )
Alibaba Worm:Win32/Kolab.7cde41c9
K7GW Trojan ( 0020d11f1 )
Cybereason malicious.8130ca
VirIT Trojan.Win32.Generic.LJC
Cyren W32/Sefnit.G.gen!Eldorado
Symantec Trojan.ADH
ESET-NOD32 a variant of Win32/Kryptik.LPD
Paloalto generic.ml
ClamAV Win.Worm.Kolab-4579
Kaspersky Net-Worm.Win32.Kolab.vep
BitDefender Trojan.Agent.ECUO
NANO-Antivirus Trojan.Win32.MLW.ieike
Avast Win32:Malware-gen
Tencent Malware.Win32.Gencirc.10b58e46
Ad-Aware Trojan.Agent.ECUO
Sophos Mal/Generic-R + Troj/Agent-VOW
Comodo TrojWare.Win32.TrojanSpy.Zbot.G@2tckk5
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.Packed.21467
VIPRE Trojan.Win32.Kryptik.lbu (v)
TrendMicro WORM_KOLAB.SMB
McAfee-GW-Edition BehavesLike.Win32.Dropper.wc
Emsisoft Trojan.Agent.ECUO (B)
SentinelOne Static AI – Malicious PE
GData Trojan.Agent.ECUO
Jiangmin Worm/Kolab.jod
Webroot W32.Infostealer.Gen
Avira TR/Dropper.Gen
MAX malware (ai score=100)
Antiy-AVL Worm[Net]/Win32.Kolab
Kingsoft Worm.Kolab.(kcloud)
Arcabit Trojan.Agent.ECUO
ViRobot Worm.Win32.A.Net-Kolab.1331712[UPX]
ZoneAlarm Net-Worm.Win32.Kolab.vep
Microsoft Trojan:Win32/Sefnit.R
Cynet Malicious (score: 100)
AhnLab-V3 Worm/Win32.Kolab.R3715
McAfee Sefnit.ad
VBA32 Trojan.Zeus.EA.0999
Malwarebytes Malware.Heuristic.1003
TrendMicro-HouseCall WORM_KOLAB.SMB
Rising Worm.Kolab!8.1C4D (CLOUD)
Yandex Trojan.GenAsa!aj/jMlpwICk
Ikarus Trojan-PWS.Win32.Zbot
Fortinet W32/Kryptik.NAS!tr
BitDefenderTheta Gen:NN.ZexaF.34212.@pNfaCossgpc
AVG Win32:Malware-gen
Panda Bck/Qbot.AO
CrowdStrike win/malicious_confidence_60% (W)

How to remove Trojan.Agent.ECUO (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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