Overview

overview

10

Static

static

56d501a6c7...23.exe

windows7-x64

10

56d501a6c7...23.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    56d501a6c7a11d74c2d29a5ffca2ef25778fee7e85445147894b53e391f9c423

  • Size

    670KB

  • Sample

    220725-byrpxaheap

  • MD5

    57ca61c5fd93fc09c48e6fec93d171d7

  • SHA1

    67c4e25ab491736b41718d4564b2889ed4ba84fc

  • SHA256

    56d501a6c7a11d74c2d29a5ffca2ef25778fee7e85445147894b53e391f9c423

  • SHA512

    e247fa0490d79972a090212bb1dd9cba3311f6ed3dc756787ab3dc42c961b1c8ed42a426b9c306d66e21bf8eba533938f99fe777e8253054cf79647f87bef638

Score
10/10
darkcometfirstevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

first

C2

sasa777.no-ip.org:1604

Mutex

DC_MUTEX-SRR1RJ7

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    X0Rpg2vdV3fU

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      56d501a6c7a11d74c2d29a5ffca2ef25778fee7e85445147894b53e391f9c423

    • Size

      670KB

    • MD5

      57ca61c5fd93fc09c48e6fec93d171d7

    • SHA1

      67c4e25ab491736b41718d4564b2889ed4ba84fc

    • SHA256

      56d501a6c7a11d74c2d29a5ffca2ef25778fee7e85445147894b53e391f9c423

    • SHA512

      e247fa0490d79972a090212bb1dd9cba3311f6ed3dc756787ab3dc42c961b1c8ed42a426b9c306d66e21bf8eba533938f99fe777e8253054cf79647f87bef638

    Score
    10/10
    darkcometfirstevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • 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

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

7
T1112

Disabling Security Tools

2
T1089

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