Overview

overview

10

Static

static

86c3c7f8c4...3f.exe

windows7-x64

10

86c3c7f8c4...3f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    86c3c7f8c4ef254f6f11f41b3f02994b26ac9158cbd2be948d5441e1a103aa3f

  • Size

    606KB

  • Sample

    221205-cjhzwsfc63

  • MD5

    428a73f481be105145733d13fef11786

  • SHA1

    3a3eaf458ae395154af786608dcc20db30199967

  • SHA256

    86c3c7f8c4ef254f6f11f41b3f02994b26ac9158cbd2be948d5441e1a103aa3f

  • SHA512

    9c5ff99598f7bf20dd8b6272f4ab7ac9a7a1e0eb4d96e4899b397bb06b7e40777861dde18f54ea9316b4357a5745299615df3929308e938743b176111ac69b1f

  • SSDEEP

    12288:aAM0fXSeLv7dC7WIUCjHaySJcRyz5VfAERUcjBVhAW6bJxg1Y:VhWXjHuZxjtX6

Score
10/10
darkcomethfevasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

abdelkader1313.no-ip.org:81

Mutex

DC_MUTEX-4SWSAXQ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    PxBmf9ltGMpH

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      86c3c7f8c4ef254f6f11f41b3f02994b26ac9158cbd2be948d5441e1a103aa3f

    • Size

      606KB

    • MD5

      428a73f481be105145733d13fef11786

    • SHA1

      3a3eaf458ae395154af786608dcc20db30199967

    • SHA256

      86c3c7f8c4ef254f6f11f41b3f02994b26ac9158cbd2be948d5441e1a103aa3f

    • SHA512

      9c5ff99598f7bf20dd8b6272f4ab7ac9a7a1e0eb4d96e4899b397bb06b7e40777861dde18f54ea9316b4357a5745299615df3929308e938743b176111ac69b1f

    • SSDEEP

      12288:aAM0fXSeLv7dC7WIUCjHaySJcRyz5VfAERUcjBVhAW6bJxg1Y:VhWXjHuZxjtX6

    Score
    10/10
    darkcomethfevasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Drops file in Drivers directory

    • 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

    • Uses the VBS compiler for execution

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

Scripting

1
T1064

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks