Overview

overview

10

Static

static

f6fc7c02b1...09.exe

windows7-x64

10

f6fc7c02b1...09.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f6fc7c02b1bce7cc7122b33a5ed8b3d62e4556a31ae552de3ba647ee3f9fb909

  • Size

    415KB

  • Sample

    221020-xw7t1aahcr

  • MD5

    a00a91d2ba20115b3703eeaecbccdec0

  • SHA1

    caee7a7c7028aee84b2dcc9d26bc9beab713210d

  • SHA256

    f6fc7c02b1bce7cc7122b33a5ed8b3d62e4556a31ae552de3ba647ee3f9fb909

  • SHA512

    8af970b4e655adab2c979f66f01bdfe6189e099165a51247251654d533d25db0ff293e14dc3e40a8e886eb5983b97f2c7cca2d9fb97c94137868727245762247

  • SSDEEP

    6144:5s5FPpcaThyso/4jKzw4wXbVkbS2xXBVA2ijUmi81tkyxbYWgOvWBK:qrPp1TFZEsb52xRVNN81eyxYWgOOBK

Score
10/10
darkcomethfevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

steine.no-ip.biz:333

Mutex

DC_MUTEX-QAVBPMS

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    7ChNXBdU8LBi

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Sytem32dll

Targets

    • Target

      f6fc7c02b1bce7cc7122b33a5ed8b3d62e4556a31ae552de3ba647ee3f9fb909

    • Size

      415KB

    • MD5

      a00a91d2ba20115b3703eeaecbccdec0

    • SHA1

      caee7a7c7028aee84b2dcc9d26bc9beab713210d

    • SHA256

      f6fc7c02b1bce7cc7122b33a5ed8b3d62e4556a31ae552de3ba647ee3f9fb909

    • SHA512

      8af970b4e655adab2c979f66f01bdfe6189e099165a51247251654d533d25db0ff293e14dc3e40a8e886eb5983b97f2c7cca2d9fb97c94137868727245762247

    • SSDEEP

      6144:5s5FPpcaThyso/4jKzw4wXbVkbS2xXBVA2ijUmi81tkyxbYWgOvWBK:qrPp1TFZEsb52xRVNN81eyxYWgOOBK

    Score
    10/10
    darkcomethfevasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • 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

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks