Troj/CosDuke-B (file analysis)

The Troj/CosDuke-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 Troj/CosDuke-B virus can do?

Sample contains Overlay data
Authenticode signature is invalid
Anomalous binary characteristics

How to determine Troj/CosDuke-B?


File Info:
name: 033E716A484E5D8CDB86.mlw
path: /opt/CAPEv2/storage/binaries/6a287edaa632c252c897320ebe44c5ad40e0614f724b07354b41a393650fb5c9
crc32: 31387364
md5: 033e716a484e5d8cdb8691c9d1f7a850
sha1: 069c3e96f4bc98bd4b2ac8d76df3d16c19522d48
sha256: 6a287edaa632c252c897320ebe44c5ad40e0614f724b07354b41a393650fb5c9
sha512: af8f2ec2b7cd89150e74d96ce8584ceed19e24e392391d855f76b57c01fd9d4f9fe29c3be60a9b6adf08f8f9fe84ae5bf9f7db98d9c6205b5faae9658a2dce8b
ssdeep: 24576:ce6u/p6D3RSgGRha3tQymeKbitTljWr4ZHhe/1w1pOy9CN5KAQhkSXge:cOB6zYkEZuFwr4ZB41wKENhLQe
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T13CB52320B7828073C26725B44AE5F7B85779BDA22BF299CF17C556F80F242C1927731A
sha3_384: 60db57119738ec051e35a85e11f7e3ecf799cac1589d4498d748ac030e51e4c7a6cd1e7476334f48c8379660b8ca0901
ep_bytes: e8ff200000e989feffffe8a224000085
timestamp: 2012-11-13 09:53:11

Version Info:
CompanyName: Google Inc.
FileDescription: Google Chrome Updater
FileVersion: 25.0.1364.97
InternalName: chrome_exe
LegalCopyright: Copyright 2012 Google Inc. All rights reserved.
OriginalFilename: chrome.exe
ProductName: Google Chrome Updater
ProductVersion: 25.0.1364.97
CompanyShortName: Google
ProductShortName: Chrome
LastChange: 183676
Official Build: 1
Translation: 0x0409 0x04b0

Troj/CosDuke-B also known as:

Bkav	W32.FamVT.FVDATTc.Worm
Lionic	Trojan.Win32.CosmicDuke.tnq3
MicroWorld-eScan	Trojan.GenericKD.64984161
ClamAV	Win.Trojan.CosmicDuke-3
FireEye	Trojan.GenericKD.64984161
CAT-QuickHeal	Trojan.Mauvaise.SL1
ALYac	Trojan.GenericKD.64984161
Cylance	unsafe
Zillya	Trojan.Agent.Win32.471810
Sangfor	Trojan.Win32.Save.a
K7AntiVirus	Password-Stealer ( 0049b09a1 )
Alibaba	TrojanDropper:Win32/Miniduke.abf8cd23
K7GW	Password-Stealer ( 0049b09a1 )
Cybereason	malicious.6f4bc9
Baidu	Win32.Trojan-PSW.Agent.l
VirIT	Trojan.Win32.X-Paxxes.BMQP
Cyren	W32/Trojan.DIRN-7729
Symantec	Backdoor.Tinybaron
Elastic	malicious (high confidence)
APEX	Malicious
Cynet	Malicious (score: 100)
BitDefender	Trojan.GenericKD.64984161
Avast	Win32:MiniDuke-G [Trj]
Tencent	Trojan-Dropper.Win32.Miniduke.wa
TACHYON	Backdoor/W32.CosmicDuke.2315162
Emsisoft	Trojan.GenericKD.64984161 (B)
DrWeb	Trojan.PWS.Siggen1.28564
VIPRE	Trojan.GenericKD.64984161
McAfee-GW-Edition	BehavesLike.Win32.Generic.vc
Sophos	Troj/CosDuke-B
SentinelOne	Static AI – Malicious PE
Jiangmin	Backdoor/CosmicDuke.a
Antiy-AVL	Trojan/Win32.TSGeneric
Xcitium	TrojWare.Win32.TrojanDropper.Miniduke.DA@6l2urh
Arcabit	Trojan.Generic.D3DF9461
ViRobot	Trojan.Win32.CosmicDuke.697856
GData	Win32.Trojan.PSE.1020OTA
Google	Detected
AhnLab-V3	Win-Trojan/Agent.697856.K
McAfee	GenericRXEN-QE!033E716A484E
MAX	malware (ai score=80)
Malwarebytes	Generic.Malware.AI.DDS
Rising	Stealer.Agent!1.A6DB (CLASSIC)
Ikarus	Trojan-Dropper.Win32.Miniduke
MaxSecure	Backdoor.CosmicDuke.gen
Fortinet	W32/Ipamor.D846!tr
AVG	Win32:MiniDuke-G [Trj]
DeepInstinct	MALICIOUS
CrowdStrike	win/malicious_confidence_100% (W)

How to remove Troj/CosDuke-B?

Troj/CosDuke-B removal tool

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.

About the author

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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