Overview

overview

10

Static

static

3

98a05811eb...18.exe

windows7-x64

10

98a05811eb...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    98a05811eb6b0faeaba9937bb089af44_JaffaCakes118

  • Size

    804KB

  • Sample

    241125-csy3gayncq

  • MD5

    98a05811eb6b0faeaba9937bb089af44

  • SHA1

    508c223b6147744d85d821b9f01caa1c1abb39e9

  • SHA256

    bce53cc6169641be9c7ffa7c5a4fc542066fa82e7cdfa832af71e8b27ad60d70

  • SHA512

    153e7494595f3a49cb2fb95bfb1f0a3214de740d64982e199801c188c38bedc21f0835b6b18668cc4122c42c58de25cbb6d2f2f1827b169d2e6ac5b92600df96

  • SSDEEP

    12288:eSTnw+tBhvxFDsE4cx/DbnD7Yj19/8LDt9aQFonL7XT8Y1+AYnvJmES:vnBpFYE4ctDikB9af/XZI9vsT

Score
10/10
darkcometbootkitdiscoveryevasionpersistencerattrojan

Malware Config

Targets

    • Target

      98a05811eb6b0faeaba9937bb089af44_JaffaCakes118

    • Size

      804KB

    • MD5

      98a05811eb6b0faeaba9937bb089af44

    • SHA1

      508c223b6147744d85d821b9f01caa1c1abb39e9

    • SHA256

      bce53cc6169641be9c7ffa7c5a4fc542066fa82e7cdfa832af71e8b27ad60d70

    • SHA512

      153e7494595f3a49cb2fb95bfb1f0a3214de740d64982e199801c188c38bedc21f0835b6b18668cc4122c42c58de25cbb6d2f2f1827b169d2e6ac5b92600df96

    • SSDEEP

      12288:eSTnw+tBhvxFDsE4cx/DbnD7Yj19/8LDt9aQFonL7XT8Y1+AYnvJmES:vnBpFYE4ctDikB9af/XZI9vsT

    Score
    10/10
    darkcometbootkitdiscoveryevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Darkcomet family

      darkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Windows security bypass

      evasiontrojan

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • 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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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

3
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

2
T1562.001

Modify Registry

5
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