Overview

overview

10

Static

static

9315cd0bb5...97.exe

windows7-x64

10

9315cd0bb5...97.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9315cd0bb5ff6c94749b70d3f29df3f770c4508987e0c09e7e5b61b9896ea697

  • Size

    341KB

  • Sample

    221201-az78lshf69

  • MD5

    6229ca5be4d9928440b3d842950f5346

  • SHA1

    f3653d00a8a870a0437d18f3a4441ede275cbbf0

  • SHA256

    9315cd0bb5ff6c94749b70d3f29df3f770c4508987e0c09e7e5b61b9896ea697

  • SHA512

    4607bac5b368fbe660ed6e3d3f572951f0d16b6401ba1dd791244ccf73ab15f169b073cdeb70f8bcbc289208bbde17ce96506195683a2566646dcbef498e91bc

  • SSDEEP

    6144:Q8XdZ0iRwHoMg8HuRLp5RdHCmP2nwoQKnsv1ieNlBF:bfwIYuRLplCmPswo/sv1ieNlBF

Score
10/10
darkcometcsrssevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

csrss

C2

armyk.no-ip.org:82

Mutex

DC_MUTEX-VS1TED3

Attributes
  • InstallPath

    wuauclt.exe

  • gencode

    MKcgY6l5UWgn

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Windows Update

Targets

    • Target

      9315cd0bb5ff6c94749b70d3f29df3f770c4508987e0c09e7e5b61b9896ea697

    • Size

      341KB

    • MD5

      6229ca5be4d9928440b3d842950f5346

    • SHA1

      f3653d00a8a870a0437d18f3a4441ede275cbbf0

    • SHA256

      9315cd0bb5ff6c94749b70d3f29df3f770c4508987e0c09e7e5b61b9896ea697

    • SHA512

      4607bac5b368fbe660ed6e3d3f572951f0d16b6401ba1dd791244ccf73ab15f169b073cdeb70f8bcbc289208bbde17ce96506195683a2566646dcbef498e91bc

    • SSDEEP

      6144:Q8XdZ0iRwHoMg8HuRLp5RdHCmP2nwoQKnsv1ieNlBF:bfwIYuRLplCmPswo/sv1ieNlBF

    Score
    10/10
    darkcometcsrssevasionpersistencerattrojanupx

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

4
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks