Overview

overview

10

Static

static

10

f3d6caf5d3...18.exe

windows7-x64

10

f3d6caf5d3...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f3d6caf5d3485c17526bf4249621c74e01d90a9ab3ee4f33c17249c982bf3d18

  • Size

    658KB

  • Sample

    221126-cfyk6sgg8s

  • MD5

    3127bfcb04c1efdf78534610c0f6e46b

  • SHA1

    fd0e2e9ea3b1563706145362f9fccb610653d6f9

  • SHA256

    f3d6caf5d3485c17526bf4249621c74e01d90a9ab3ee4f33c17249c982bf3d18

  • SHA512

    36119a3e441efc57b2e96e7a7bcb8c3902eec6bb5faf418fc9859ae351e667a0ced45a765ce634dc01e3a1662bddb7a15ea40ac979bd5496935f006e7a0880f1

  • SSDEEP

    12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h6:eZ1xuVVjfFoynPaVBUR8f+kN10EB8

Score
10/10
darkcometvictimepersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Victime

C2

23.95.52.24:1604

Mutex

MUTEX-GURB7WX

Attributes
  • InstallPath

    Microsoft\windowsupdate.com

  • gencode

    hkdEYJPYqYa3

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Windows

Targets

    • Target

      f3d6caf5d3485c17526bf4249621c74e01d90a9ab3ee4f33c17249c982bf3d18

    • Size

      658KB

    • MD5

      3127bfcb04c1efdf78534610c0f6e46b

    • SHA1

      fd0e2e9ea3b1563706145362f9fccb610653d6f9

    • SHA256

      f3d6caf5d3485c17526bf4249621c74e01d90a9ab3ee4f33c17249c982bf3d18

    • SHA512

      36119a3e441efc57b2e96e7a7bcb8c3902eec6bb5faf418fc9859ae351e667a0ced45a765ce634dc01e3a1662bddb7a15ea40ac979bd5496935f006e7a0880f1

    • SSDEEP

      12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h6:eZ1xuVVjfFoynPaVBUR8f+kN10EB8

    Score
    10/10
    darkcometvictimepersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks