Categories: Malware

What is “Win32/Packed.Obsidium.CJ”?

The Win32/Packed.Obsidium.CJ 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.CJ 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
  • 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
  • Network activity detected but not expressed in API logs
  • 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

Related domains:

wpad.local-net

How to determine Win32/Packed.Obsidium.CJ?


File Info:

name: C32540EC4A1CE8EF8E72.mlwpath: /opt/CAPEv2/storage/binaries/305f235a8f31366acb340b8671693e7243cca7dd1d42426c1d0a6ba48ebc6159crc32: E9B3FFFDmd5: c32540ec4a1ce8ef8e72d12237e8d1ebsha1: 1769a0e906bd7b5efcc31cf8fd814709f92fd094sha256: 305f235a8f31366acb340b8671693e7243cca7dd1d42426c1d0a6ba48ebc6159sha512: 315fa54bb3b7334ee44797b35892021c654368573863acac00c068a35d0135af03e3049572894ad9842e7996c3cc7499d2203e95c6ab4de5fc7f6a382d70ef09ssdeep: 24576:ysZQZU24PHRO3B3akSCUzEZXIe2O1AsPvLZpU:ysRJOxavXiNxTLUtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11C456A0FF96C66B8CD1987B130DD2C24C592AF56796E814B2EE4307EC6B46D28731E1Bsha3_384: 43ce426764ab66140de71321569187f0ef63fba76ada34b38510c01f08714aec2b99ce2c674604bf478d96cd20378a95ep_bytes: eb018f50eb05c7846312a4e81b000000timestamp: 2073-10-04 19:09:01

Version Info:

CompanyName: SplitmediaLabs LimitedFileDescription: VHMediaLib COM implementationFileVersion: 2.0.1609.2801InternalName: VHMediaCOM.dllLegalCopyright: 2009-2016 (c) SplitmediaLabs LimitedOriginalFilename: VHMediaCOM.dllProductName: VH Video SDKProductVersion: 2.0.1609.2801Translation: 0x0000 0x04e4

Win32/Packed.Obsidium.CJ also known as:

Bkav W32.AIDetect.malware1
Lionic Trojan.Win32.Stealer.l!c
DrWeb Trojan.PWS.Siggen3.6699
MicroWorld-eScan Trojan.GenericKD.38100126
FireEye Generic.mg.c32540ec4a1ce8ef
CAT-QuickHeal TrojanSpy.Stealer
ALYac Trojan.GenericKD.38100126
Cylance Unsafe
CrowdStrike win/malicious_confidence_60% (W)
Alibaba TrojanSpy:Win32/Stealer.fff208fe
BitDefenderTheta Gen:NN.ZexaF.34294.kr3@auEp@PmP
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Packed.Obsidium.CJ
Paloalto generic.ml
ClamAV Win.Malware.Zusy-9908145-0
Kaspersky Trojan-Spy.Win32.Stealer.akdc
BitDefender Trojan.GenericKD.38100126
Avast Win32:Trojan-gen
Ad-Aware Trojan.GenericKD.38100126
Emsisoft Trojan.GenericKD.38100126 (B)
Sophos Mal/Generic-S
Ikarus Trojan-Spy.Win32.CredStealer
eGambit Unsafe.AI_Score_97%
Avira TR/Spy.Stealer.stlpb
MAX malware (ai score=82)
Gridinsoft Ransom.Win32.Sabsik.sa
Microsoft Trojan:Win32/Sabsik.FL.B!ml
GData Trojan.GenericKD.38100126
Cynet Malicious (score: 99)
Acronis suspicious
McAfee Artemis!C32540EC4A1C
VBA32 BScope.Trojan.Wacatac
Malwarebytes Spyware.PasswordStealer
APEX Malicious
SentinelOne Static AI – Malicious PE
Fortinet W32/Malicious_Behavior.VEX
Webroot W32.Trojan.Gen
AVG Win32:Trojan-gen
Cybereason malicious.906bd7
Panda Trj/CI.A

How to remove Win32/Packed.Obsidium.CJ?

  • 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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