Overview

overview

10

Static

static

10

f20bcc2343...da.exe

windows7_x64

10

f20bcc2343...da.exe

windows10_x64

10

Sharing

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General

  • Target

    f20bcc23430a216c14e45207e84ca8cd819049af8d427e6a3ab38255c1fa8dda

  • Size

    756KB

  • Sample

    210929-jzwn9aedak

  • MD5

    50b53927892abfe41b08d0c6311c1a39

  • SHA1

    b43e1fec005c39a1a0b1ab31616522906fe4ba84

  • SHA256

    f20bcc23430a216c14e45207e84ca8cd819049af8d427e6a3ab38255c1fa8dda

  • SHA512

    e980a91d6a91f5a20eebf0a7ba7f7e2d1fe5748f73309cd2695bceb0b92b84208667e9c842a01d0606b76c4831cae3be2e13502d7ed80ff5b910f9ec3a4b41f4

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-0UX76EM

Attributes
  • InstallPath

    explorer\explorer.exe

  • gencode

    oxFTG57Sq0Jl

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      f20bcc23430a216c14e45207e84ca8cd819049af8d427e6a3ab38255c1fa8dda

    • Size

      756KB

    • MD5

      50b53927892abfe41b08d0c6311c1a39

    • SHA1

      b43e1fec005c39a1a0b1ab31616522906fe4ba84

    • SHA256

      f20bcc23430a216c14e45207e84ca8cd819049af8d427e6a3ab38255c1fa8dda

    • SHA512

      e980a91d6a91f5a20eebf0a7ba7f7e2d1fe5748f73309cd2695bceb0b92b84208667e9c842a01d0606b76c4831cae3be2e13502d7ed80ff5b910f9ec3a4b41f4

    Score
    10/10
    darkcometguest16evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

7
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks