Overview

overview

10

Static

static

8

4f66e8cd1a...b1.exe

windows7_x64

10

4f66e8cd1a...b1.exe

windows10_x64

10

Sharing

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General

  • Target

    4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

  • Size

    251KB

  • Sample

    201113-gkgzfcfkq6

  • MD5

    44fa6d3ed60372a6e2fc42a8d37d1a0f

  • SHA1

    b37f23945917b4a32e20f8e0760a002164f39e85

  • SHA256

    4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

  • SHA512

    1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Score
10/10
darkcometsazanevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

127.0.0.1:1604

Mutex

DC_MUTEX-FG9B2GA

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    j5zPqt9UKPk3

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

    • Size

      251KB

    • MD5

      44fa6d3ed60372a6e2fc42a8d37d1a0f

    • SHA1

      b37f23945917b4a32e20f8e0760a002164f39e85

    • SHA256

      4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

    • SHA512

      1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

    Score
    10/10
    darkcometsazanevasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Executes dropped EXE

    • 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

    • 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

1
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