Overview

overview

10

Static

static

10

21fb8f4042...22.exe

windows7-x64

10

21fb8f4042...22.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    21fb8f40424a8f2356dc51ce43d1af22

  • Size

    347KB

  • Sample

    231231-ay69xsgcfr

  • MD5

    21fb8f40424a8f2356dc51ce43d1af22

  • SHA1

    940c797a0201f182e451ac5e28df4526a0fb6d39

  • SHA256

    3d3c0207409076d6c9f7800a4557000aabeec2a6f81462b59f5fc76f1b215839

  • SHA512

    9d1126b6487788848cc2b79211bf730d7c655794fd7d33e060aaf067e9bda04d8d9ad9ec1d55070497f618e25f2c61b918998159ccaacbdaf5f2eaa609803b39

  • SSDEEP

    6144:8wT5O7pJmNB6dLY6dCnnsyZLHoaIyv6ocU/qxDS2xDWb3cCkdRPlbL:8P+NULZdCn3TbncU2D7Ab3

Score
10/10
darkcometdownpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

down

C2

epicrypt.no-ip.org:1604

Mutex

DC_MUTEX-V6F2W9Y

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    SLDYxgws5n00

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      21fb8f40424a8f2356dc51ce43d1af22

    • Size

      347KB

    • MD5

      21fb8f40424a8f2356dc51ce43d1af22

    • SHA1

      940c797a0201f182e451ac5e28df4526a0fb6d39

    • SHA256

      3d3c0207409076d6c9f7800a4557000aabeec2a6f81462b59f5fc76f1b215839

    • SHA512

      9d1126b6487788848cc2b79211bf730d7c655794fd7d33e060aaf067e9bda04d8d9ad9ec1d55070497f618e25f2c61b918998159ccaacbdaf5f2eaa609803b39

    • SSDEEP

      6144:8wT5O7pJmNB6dLY6dCnnsyZLHoaIyv6ocU/qxDS2xDWb3cCkdRPlbL:8P+NULZdCn3TbncU2D7Ab3

    Score
    10/10
    darkcometdownpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks