Overview

overview

10

Static

static

3

1cd7f3d178...18.exe

windows7-x64

10

1cd7f3d178...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    1cd7f3d1789fce8865ceb8a1efef4c91_JaffaCakes118

  • Size

    904KB

  • Sample

    240701-213s3avgra

  • MD5

    1cd7f3d1789fce8865ceb8a1efef4c91

  • SHA1

    a990cddb8534faab48e2f97ee5b699bd5311623c

  • SHA256

    122a4b018095b213e356097ddd724c2708fdcddd4ff89d72e73af150f3b5188a

  • SHA512

    e1da51d7c204658d922460d0f7c750b2f0a6768c7f3071ed7ce908303d775cacf63f0132f8aee04fca52057b7b4ed231e017e3eeb1eace8c9605f521e125538f

  • SSDEEP

    12288:y3Or9fnnE3OtPtNOzifk58f0LHj5iL3wBt6PSPRfsV0eQWdFfefL432hjvB7eb25:3aetlT86f07jUMBtPRjmeTKCjvde0

Score
10/10
darkcometbootkitevasionpersistencerattrojan

Malware Config

Targets

    • Target

      1cd7f3d1789fce8865ceb8a1efef4c91_JaffaCakes118

    • Size

      904KB

    • MD5

      1cd7f3d1789fce8865ceb8a1efef4c91

    • SHA1

      a990cddb8534faab48e2f97ee5b699bd5311623c

    • SHA256

      122a4b018095b213e356097ddd724c2708fdcddd4ff89d72e73af150f3b5188a

    • SHA512

      e1da51d7c204658d922460d0f7c750b2f0a6768c7f3071ed7ce908303d775cacf63f0132f8aee04fca52057b7b4ed231e017e3eeb1eace8c9605f521e125538f

    • SSDEEP

      12288:y3Or9fnnE3OtPtNOzifk58f0LHj5iL3wBt6PSPRfsV0eQWdFfefL432hjvB7eb25:3aetlT86f07jUMBtPRjmeTKCjvde0

    Score
    10/10
    darkcometbootkitevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks