Overview

overview

10

Static

static

4e1f834cef...8e.exe

windows7-x64

10

4e1f834cef...8e.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4e1f834cef2c67e29acf5c2557c52f594575f88bd59f03bfb31a56e796bb768e

  • Size

    674KB

  • Sample

    220720-xa39pafab4

  • MD5

    0b44372572edc237e093c9f44f07d5d8

  • SHA1

    9a54a1297a7339167e491447a14be64e5ff4ba26

  • SHA256

    4e1f834cef2c67e29acf5c2557c52f594575f88bd59f03bfb31a56e796bb768e

  • SHA512

    e8d6714265f6d6e2590df52bd515f1a4939fe78c07dd589a10a616ed500ee49975832f2b67eb43f3e7cdda1e44c9f07cb3de3e215de682b16cc014d894757c1c

Score
10/10
darkcometevasionpersistencerattrojan

Malware Config

Targets

    • Target

      4e1f834cef2c67e29acf5c2557c52f594575f88bd59f03bfb31a56e796bb768e

    • Size

      674KB

    • MD5

      0b44372572edc237e093c9f44f07d5d8

    • SHA1

      9a54a1297a7339167e491447a14be64e5ff4ba26

    • SHA256

      4e1f834cef2c67e29acf5c2557c52f594575f88bd59f03bfb31a56e796bb768e

    • SHA512

      e8d6714265f6d6e2590df52bd515f1a4939fe78c07dd589a10a616ed500ee49975832f2b67eb43f3e7cdda1e44c9f07cb3de3e215de682b16cc014d894757c1c

    Score
    10/10
    darkcometevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks