Overview

overview

10

Static

static

10

client.exe

windows10-ltsc_2021-x64

10

Sharing

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General

  • Target

    client.exe

  • Size

    36KB

  • Sample

    250328-zce1zssp13

  • MD5

    69bf3d36d5193bb124d170eb64a2441e

  • SHA1

    bd0039aa644471536150c7c1a190c9435d94451b

  • SHA256

    066b88bfc0a17afe6757121d957d132998c7207e68e5049fdb993ba37b406173

  • SHA512

    165be49ec0dea10891934b32a6c4b5e3493f40953f9ced0805fa6e67b82b734f639dc18697326dcb61d76c4e1fcc6b2ffcc2b5a1edca5e7d59154393eed57c3f

  • SSDEEP

    768:X5PHyCjmhFdWfLubuZ1kvIaEekM226r1:X5PHfjGPAKbLVv6r

Score
10/10
remcoshostdefense_evasiondiscoverypersistencerattrojanupx

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

ddffg-52874.portmap.host:52874

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    COM Surrogate

  • copy_folder

    AppDataX

  • delete_file

    true

  • hide_file

    true

  • 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_xouefyyxav

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    WindowsNotification

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      client.exe

    • Size

      36KB

    • MD5

      69bf3d36d5193bb124d170eb64a2441e

    • SHA1

      bd0039aa644471536150c7c1a190c9435d94451b

    • SHA256

      066b88bfc0a17afe6757121d957d132998c7207e68e5049fdb993ba37b406173

    • SHA512

      165be49ec0dea10891934b32a6c4b5e3493f40953f9ced0805fa6e67b82b734f639dc18697326dcb61d76c4e1fcc6b2ffcc2b5a1edca5e7d59154393eed57c3f

    • SSDEEP

      768:X5PHyCjmhFdWfLubuZ1kvIaEekM226r1:X5PHfjGPAKbLVv6r

    Score
    10/10
    remcoshostdefense_evasiondiscoverypersistencerattrojanupx

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • UAC bypass

      defense_evasiontrojan

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

      defense_evasion

    • Adds policy Run key to start application

      persistence

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Modifies WinLogon

      persistence

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

6
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
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