Overview

overview

10

Static

static

ab6ba5bec5...5a.exe

windows7_x64

8

ab6ba5bec5...5a.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    ab6ba5bec568e340061bb8dde6c3342bf5fcb21b3d96badccabb252b77a9195a

  • Size

    3.8MB

  • Sample

    220502-w9ejyadbh9

  • MD5

    57f9d1882f4bf9a35c66a3c7e541a174

  • SHA1

    6c26537c0b251371c9e888f157f24017a00057eb

  • SHA256

    ab6ba5bec568e340061bb8dde6c3342bf5fcb21b3d96badccabb252b77a9195a

  • SHA512

    e76e92e95629581bc2ee0bafb4057446402c5ba72b2e2013a85c2109166412d07a2657815aeff13ee4e6f932016b6e32a7bdd5444bf560814b1c49a08877661f

Score
10/10
darkcomet2020nov12020nov11evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

2020NOV11

C2

sandyclark255.hopto.org:1605

Mutex

DC_MUTEX-C010SK7

Attributes
  • gencode

    cFXCTt13CuYM

  • install

    false

  • offline_keylogger

    true

  • password

    hhhhhh

  • persistence

    false

Extracted

Family

darkcomet

Botnet

2020NOV1

C2

sandyclark255.hopto.org:35887

Mutex

DC_MUTEX-6XT818D

Attributes
  • InstallPath

    excelsl.exe

  • gencode

    n7asq0Dbu7D2

  • install

    true

  • offline_keylogger

    true

  • password

    hhhhhh

  • persistence

    true

  • reg_key

    office

Targets

    • Target

      ab6ba5bec568e340061bb8dde6c3342bf5fcb21b3d96badccabb252b77a9195a

    • Size

      3.8MB

    • MD5

      57f9d1882f4bf9a35c66a3c7e541a174

    • SHA1

      6c26537c0b251371c9e888f157f24017a00057eb

    • SHA256

      ab6ba5bec568e340061bb8dde6c3342bf5fcb21b3d96badccabb252b77a9195a

    • SHA512

      e76e92e95629581bc2ee0bafb4057446402c5ba72b2e2013a85c2109166412d07a2657815aeff13ee4e6f932016b6e32a7bdd5444bf560814b1c49a08877661f

    Score
    10/10
    darkcomet2020nov12020nov11evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops desktop.ini file(s)

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks