Overview

overview

10

Static

static

10

683fa1e449...93.exe

windows7-x64

10

683fa1e449...93.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    683fa1e449da9b71d0cafefb107efd97f0f8163f844dd837d12c354c2b901b93.exe

  • Size

    92KB

  • Sample

    240126-ng5lnadgbl

  • MD5

    b9bb1c480c1846c1ab8d8a80641f601e

  • SHA1

    6c00fcb947e69893d368ff3a3353a75840a45d41

  • SHA256

    6260ea5e3859eb49798e72ed358f78ddefbb52fdda33582546f540148c05ae80

  • SHA512

    171a6a6c11ba32bdf1d9461e0be1606b968014987a08de4d3421e899f225bfa73c2c136e833c5ccc18b6dc2a3d762c27cc34f25399071f069d3a5e7a58e7eeb8

  • SSDEEP

    1536:yhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESnNTh91e63WfmTr:shzYTGWVvJ8f2v1TbPzuMsIFSnNTh3Lx

Score
10/10
remcos1877evasionpersistencerat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

1877

C2

hawler.duckdns.org:2404

5.206.227.115:2404
Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    svshost.exe

  • copy_folder

    1877

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %WinDir%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    1877

  • keylog_path

    %AppData%

  • mouse_option

    true

  • mutex

    1877_spelzoyulk

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Google Update

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      683fa1e449da9b71d0cafefb107efd97f0f8163f844dd837d12c354c2b901b93.exe

    • Size

      92KB

    • MD5

      b9bb1c480c1846c1ab8d8a80641f601e

    • SHA1

      6c00fcb947e69893d368ff3a3353a75840a45d41

    • SHA256

      6260ea5e3859eb49798e72ed358f78ddefbb52fdda33582546f540148c05ae80

    • SHA512

      171a6a6c11ba32bdf1d9461e0be1606b968014987a08de4d3421e899f225bfa73c2c136e833c5ccc18b6dc2a3d762c27cc34f25399071f069d3a5e7a58e7eeb8

    • SSDEEP

      1536:yhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESnNTh91e63WfmTr:shzYTGWVvJ8f2v1TbPzuMsIFSnNTh3Lx

    Score
    10/10
    remcos1877evasionpersistencerat

    • Modifies WinLogon for persistence

      persistence

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • detects Windows exceutables potentially bypassing UAC using eventvwr.exe

    • Adds policy Run key to start application

      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

    • Modifies WinLogon

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Modify Registry

4
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks