Overview

overview

10

Static

static

10

loader.exe

windows7_x64

10

loader.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    loader.bin

  • Size

    659KB

  • Sample

    220620-xrgr1scge7

  • MD5

    559e77c66347f99fc2ab5e9ef757ce0d

  • SHA1

    86bd1056e44cdf6dcd3188e16f55cef80a840949

  • SHA256

    8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

  • SHA512

    30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

Score
10/10
darkcometsazanevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-LJTACQW

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    l51rypEngfWg

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      loader.bin

    • Size

      659KB

    • MD5

      559e77c66347f99fc2ab5e9ef757ce0d

    • SHA1

      86bd1056e44cdf6dcd3188e16f55cef80a840949

    • SHA256

      8d5f887270c6f0c2b383c57435bbf7d222ce416a09b3d74d4e1d80608543d0ce

    • SHA512

      30f67914a11b57dd69d4f2715c03477d934442169db37c5b74e91d0fb8cbf00b3d4fbd94a38b3ed456b9363d551e2b22756087c19cea53eb3da52eb5fd8515e9

    Score
    10/10
    darkcometsazanevasionpersistencerattrojan

    • 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

    • Executes dropped EXE

    • 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

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

6
T1112

Disabling Security Tools

2
T1089

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks