General

  • Target

    6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

  • Size

    756KB

  • Sample

    220725-ajealafaap

  • MD5

    fc31e56ab0b5fc0cf54c77018ac02c4f

  • SHA1

    960431fb7697fb10d517a0a1eba6e674c2634886

  • SHA256

    6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

  • SHA512

    5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

39.48.14.238:1604

Mutex

DC_MUTEX-2888LM2

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    WpcmlJsqmTWl

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

    • Size

      756KB

    • MD5

      fc31e56ab0b5fc0cf54c77018ac02c4f

    • SHA1

      960431fb7697fb10d517a0a1eba6e674c2634886

    • SHA256

      6c42d09cb956bcc92031f99ab79065c318985fa063ae5eacc07ddbbbe34652f7

    • SHA512

      5a78bd769845247154949a3074883920a2ce7eeaff2588ead01054739aba114e5aad9b1571d863dbdb8c0b8cab5df452c30ba3992d1ca95ef578c9a880c139ae

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies security service

    • Windows security bypass

    • 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

    • Windows security modification

    • 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

6
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks