Overview

overview

10

Static

static

1

winrar-x64-723tr.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    winrar-x64-723tr.exe
  • Size 3.7MB
  • Sample261005-r5dpmavgnd
  • SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
darkcometguest16defense_evasiondiscoveryexecutionpersistenceprivilege_escalationratspywarestealertrojan

Malware Config

Extracted

Family

  • darkcomet

Botnet

  • Guest16

C2

  • vc5t4eos86.localto.net:4631

Mutex

  • DC_MUTEX-N2P33PW

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    unuBikWPXhwX

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Targets

    • Target
      winrar-x64-723tr.exe
    • Size 3.7MB
    • SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    guest16defense_evasiondiscoveryexecutiondarkcometpersistenceprivilege_escalationratspywarestealertrojan

    • Family: Darkcomet

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

      trojanratdarkcomet

    • Disables RegEdit via registry modification

      defense_evasion

    • Disables Task Manager via registry modification

      defense_evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      defense_evasion

    • Adds Run key to start application

      persistence

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Downloads MZ/PE file

    • Network Share Discovery

      Attempt to gather information on host network.

      discovery

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Modifies WinLogon for persistence

      persistence
    behavioral1

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

Event Triggered Execution

3
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

3
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Netsh Helper DLL

1
T1546.007

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

4
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Network Share Discovery

1
T1135

Peripheral Device Discovery

1
T1120

Query Registry

5
T1012

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

System Time Discovery

1
T1124

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks