Overview

overview

10

Static

static

3

jaffacakes...45.exe

windows10-2004-x64

10

jaffacakes...45.exe

windows11-ltsc_2024-x64

5

Sharing

Copy URL Twitter E-mail

General

  • Target
    jaffacakes118__62d2320dc89369124d5456624a805845
  • Size 388KB
  • Sample260919-drtxssac63
  • SHA256 d6bcce239e2ba22c8b7c1e4a8ee1c9e9a7822c6eda4de6c838f91f331bef8cfa
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
darkcomettestbootkitdefense_evasiondiscoveryexecutionpersistencerattrojanupx

Malware Config

Extracted

Family

  • darkcomet

Botnet

  • Test

C2

  • bimbo123.dyndns.biz:5600

Mutex

  • DC_MUTEX-ME7RSFG

Attributes
  • InstallPath

    Windupdt\update.exe

  • gencode

    *#kk3.jZG$WT

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    update

rc4.plain

Targets

    • Target
      jaffacakes118__62d2320dc89369124d5456624a805845
    • Size 388KB
    • SHA256 d6bcce239e2ba22c8b7c1e4a8ee1c9e9a7822c6eda4de6c838f91f331bef8cfa
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    bootkittestdefense_evasiondiscoveryexecutiondarkcometpersistencerattrojanupx

    • Family: Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      defense_evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Suspicious use of SetThreadContext

    • UPX packed file

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

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

4
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks