Overview

overview

10

Static

static

3

55dec5c74b...18.exe

windows7-x64

10

55dec5c74b...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    55dec5c74ba0ff5be7d693f8f76da11b_JaffaCakes118

  • Size

    892KB

  • Sample

    240718-ddyzlavfng

  • MD5

    55dec5c74ba0ff5be7d693f8f76da11b

  • SHA1

    26095c15681dcee9ecaa6657c2427247f9ebf51b

  • SHA256

    aca0f1af11965b99fc28465823f80e26b4b7ae1ffa875634b8be8732fc6e1d2e

  • SHA512

    c4b8c2f8560fb5492e0cf3f10dc2df98c59e9ed6b958c79e8a107af7051c31094427a3164c758af934f0b33bc9466084e0dadf3a5afe3596213c9769bb12d164

  • SSDEEP

    24576:zqhT7SBW5znjj3S+fr4cjaKTbpHCiMDRY3EbReRbCfzMw424te+:mhT7NnS+fr4LKTbpHCiMDR0gMw42

Score
10/10
darkcometguest16_minpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-8E2USFR

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    mZstep4vUUK0

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

Targets

    • Target

      55dec5c74ba0ff5be7d693f8f76da11b_JaffaCakes118

    • Size

      892KB

    • MD5

      55dec5c74ba0ff5be7d693f8f76da11b

    • SHA1

      26095c15681dcee9ecaa6657c2427247f9ebf51b

    • SHA256

      aca0f1af11965b99fc28465823f80e26b4b7ae1ffa875634b8be8732fc6e1d2e

    • SHA512

      c4b8c2f8560fb5492e0cf3f10dc2df98c59e9ed6b958c79e8a107af7051c31094427a3164c758af934f0b33bc9466084e0dadf3a5afe3596213c9769bb12d164

    • SSDEEP

      24576:zqhT7SBW5znjj3S+fr4cjaKTbpHCiMDRY3EbReRbCfzMw424te+:mhT7NnS+fr4LKTbpHCiMDR0gMw42

    Score
    10/10
    darkcometguest16_minpersistencerattrojan

    • 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

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    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