General

  • Target

    Payment 381.zip

  • Size

    1.9MB

  • Sample

    210225-n154lgt38s

  • MD5

    78007cc0b37d3ae9e4c300d1a76782ee

  • SHA1

    40915db3005f6a2daee9bcb587502a126b926268

  • SHA256

    3e6456b94b5d27dfe76535a889fca40c093753320c991f8860d65b298494ef99

  • SHA512

    4c95fe045aece45b94e7495b179ce50a9c1998ae21a78165e55463534a2418b35b4d22173c20d4b5af7f8abc4b9c82ed9488009198465b2bc46e2916c5ab8d00

Malware Config

Extracted

Family

darkcomet

Botnet

FEBruary 2021

C2

bonding79.ddns.net:3316

goodgt79.ddns.net:3316

whatis79.ddns.net:3316

smath79.ddns.net:3316

jacknop79.ddns.net:3316

chrisle79.ddns.net:3316

Mutex

DC_MUTEX-ZKP4D0B

Attributes
  • gencode

    wb6TW2qCEdyf

  • install

    false

  • offline_keylogger

    true

  • password

    Password20$

  • persistence

    false

Targets

    • Target

      Payment 381.exe

    • Size

      3.1MB

    • MD5

      3602f8e02342949364e8669e0c88f686

    • SHA1

      8b2f47300d6fecd4d5fcef477b7cbd63cf6ef8c5

    • SHA256

      87fd1a37f56e55cc20cdf882955d9ac37a857bd0bf12c480ea76f9a452438ab6

    • SHA512

      c4368cf6fc0e76442f9e8ff812d4dea125ff61eee360085ccd870d8e11c57dec8d1c92cd310cfee58990f220236e06561424c48e84e743140923f7a15bca8890

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Uses the VBS compiler for execution

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

2
T1497

Scripting

1
T1064

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

1
T1082

Tasks