Categories: Malware

Win32/Packed.Obsidium.CW malicious file

The Win32/Packed.Obsidium.CW 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/Packed.Obsidium.CW virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • NtSetInformationThread: attempt to hide thread from debugger
  • Dynamic (imported) function loading detected
  • Enumerates running processes
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Serbian (Cyrillic)
  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Detects Sandboxie through the presence of a library
  • Queries information on disks, possibly for anti-virtualization
  • Checks for the presence of known windows from debuggers and forensic tools
  • CAPE detected the RedLine malware family
  • Checks for the presence of known devices from debuggers and forensic tools
  • Detects VirtualBox through the presence of a device
  • Anomalous binary characteristics
  • Binary compilation timestomping detected

How to determine Win32/Packed.Obsidium.CW?


File Info:

name: F523ADE482A3A4DE9390.mlwpath: /opt/CAPEv2/storage/binaries/e53582f4c369b367ba6550c1e2ce075ef9efac192a112520bb54a6aee250620dcrc32: D6E88A03md5: f523ade482a3a4de9390243c14d76484sha1: fb36745aa0956480988f866fbdf7b6b1dbf16bdbsha256: e53582f4c369b367ba6550c1e2ce075ef9efac192a112520bb54a6aee250620dsha512: 8a1089bd28490a8e77dfbc1aed2940964d47f2243ed9bffc8b31e5bbcc49ecc0fac5cd5e2a4d69a3429f2bb4f274cbcbb4b3469e8640fa666c7960968f3c3547ssdeep: 24576:F4sMizAfdz/L5vwEckjIPOuLEyLe2PGrLhT8J45b8Ql+:FJMxBOEGOuLN+Rm2l+type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T18C4534430A850438E9A73ABCFB960E17F5F5AF208DE5DF0645C3387C6662A19AF1670Dsha3_384: 7d62de73ba344f3ccd0f40294199e78106be9edb865e115dd354b02d32e1c90d8c93ace5caa99a496dd0adf9f5303ab5ep_bytes: eb013850eb058f28105dfbe81b000000timestamp: 2053-03-28 05:23:36

Version Info:

CompanyName: CRYPTOCOMPANY OUFileDescription: CryptoTab Update SetupFileVersion: 1.3.99.31InternalName: CryptoTab Update SetupLegalCopyright: Copyright 2018 CRYPTOCOMPANY OUOriginalFilename: CryptoTabUpdateSetup.exeProductName: CryptoTab UpdateProductVersion: 1.3.99.31LanguageId: enPrivateBuild: Translation: 0x0409 0x04b0

Win32/Packed.Obsidium.CW also known as:

Bkav W32.AIDetect.malware2
DrWeb Trojan.Siggen15.56265
MicroWorld-eScan Trojan.GenericKD.47505323
FireEye Generic.mg.f523ade482a3a4de
CAT-QuickHeal Exploit.Shellcode
McAfee GenericRXAA-FA!F523ADE482A3
Cylance Unsafe
Zillya Trojan.Obsidium.Win32.2028
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0058b07d1 )
Alibaba Exploit:Win32/Shellcode.07f64817
K7GW Trojan ( 0058b07d1 )
Cybereason malicious.aa0956
BitDefenderTheta Gen:NN.ZexaF.34062.kr1@a0qANUBP
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Packed.Obsidium.CW
TrendMicro-HouseCall TROJ_GEN.R002C0WKU21
Paloalto generic.ml
Kaspersky Exploit.Win32.Shellcode.aecr
BitDefender Trojan.GenericKD.47505323
Avast Win32:Trojan-gen
Ad-Aware Trojan.GenericKD.47505323
Sophos Mal/Generic-S
Comodo fls.noname@0
TrendMicro TROJ_GEN.R002C0WKU21
McAfee-GW-Edition BehavesLike.Win32.Dropper.tc
Emsisoft Trojan.Packed (A)
Ikarus Trojan.Win32.Generic
GData Trojan.GenericKD.47505323
MaxSecure Trojan.Malware.133076155.susgen
Kingsoft Win32.Exploit.Shellcode.ae.(kcloud)
Gridinsoft Ransom.Win32.Sabsik.sa
Microsoft Trojan:Win32/Sabsik.FL.B!ml
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.Generic.R456579
Acronis suspicious
VBA32 BScope.Trojan.APosT
ALYac Trojan.GenericKD.47505323
MAX malware (ai score=84)
Malwarebytes Trojan.MalPack
APEX Malicious
Rising Trojan.Generic@ML.97 (RDMK:KN1ns8hb9xbmrj60S8VQVQ)
Yandex Exploit.Shellcode!buqxACC7PUE
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_98%
Fortinet PossibleThreat.MU
Webroot W32.Rogue.Gen
AVG Win32:Trojan-gen
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_100% (W)

How to remove Win32/Packed.Obsidium.CW?

  • 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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