Overview

overview

10

Static

static

10

Server.exe

windows10-2004-x64

10

Server.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Server.exe
  • Size 92KB
  • Sample260625-synrpacz3x
  • SHA256 ad62e4095241263fae9903c6869585cbaaff5f42e5f01718e6ec1ac27c6a5cf6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcoshostadwaredefense_evasiondiscoverypersistenceransomwareratspyware

Malware Config

Extracted

Family

  • remcos

Version

  • 1.7 Pro

Botnet

  • Host

C2

  • u888.report:443

  • j88com.mobi:443

  • jj88.today:443

  • j88.studio:443

  • u888com.red:443

  • u888com.limited:443

  • u8881.org:443

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    true

  • mutex

    remcos_rwfriiwaidhqzhp

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    true

  • take_screenshot_time

    5

Targets

    • Target
      Server.exe
    • Size 92KB
    • SHA256 ad62e4095241263fae9903c6869585cbaaff5f42e5f01718e6ec1ac27c6a5cf6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    hostdefense_evasiondiscoveryremcospersistenceratadwareransomwarespyware

    • Family: Remcos

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

      ratremcos

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

      defense_evasion

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

3
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

5
T1012

Remote System Discovery

1
T1018

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks