General

  • Target

    c0ad5a53ff38949521ffd0021758553314bc52226457ccd1283c886f7ef15794

  • Size

    756KB

  • Sample

    220725-e2wd2seeh6

  • MD5

    736a628795a481e5c9fe19cc710c1f5d

  • SHA1

    7021224829890d4f894e98f5d0971ae1637a6168

  • SHA256

    c0ad5a53ff38949521ffd0021758553314bc52226457ccd1283c886f7ef15794

  • SHA512

    940f8db732ac2530405ec7b1037c75caf20fda53bfe1d84096ad50a4e1a094a4d9a11422552efccecd061493dd41349ba1ab57288dcf5b8d8b83e9785dd5948e

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

192.168.2.196:1604

zuhnminecraftmusic.hopto.org:1604

Mutex

DC_MUTEX-GJCW855

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    fl0zcGzUZSdZ

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      c0ad5a53ff38949521ffd0021758553314bc52226457ccd1283c886f7ef15794

    • Size

      756KB

    • MD5

      736a628795a481e5c9fe19cc710c1f5d

    • SHA1

      7021224829890d4f894e98f5d0971ae1637a6168

    • SHA256

      c0ad5a53ff38949521ffd0021758553314bc52226457ccd1283c886f7ef15794

    • SHA512

      940f8db732ac2530405ec7b1037c75caf20fda53bfe1d84096ad50a4e1a094a4d9a11422552efccecd061493dd41349ba1ab57288dcf5b8d8b83e9785dd5948e

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

2
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks