Overview

overview

10

Static

static

10

112-44-0x0...ry.exe

windows7-x64

10

112-44-0x0...ry.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    112-44-0x0000000000400000-0x0000000000419000-memory.dmp

  • Size

    100KB

  • Sample

    240413-kgkdyacd82

  • MD5

    f3b7cddc98281485c9bcf40314a8cfa1

  • SHA1

    a797b03d4f0aa176ac3c31509a612ff07c1a15d7

  • SHA256

    7baa3ae97c421ab54fa95d3fceca3f11900c7fc04970652400d803da18f22122

  • SHA512

    5b57a55bd40a4f57222312279989b2398bc472b57a4ca098cdbcc9456b168d9a2fefe54b3fc24ba9fcb1edb9ab60159e6887addda1285184bccb33d76010068a

  • SSDEEP

    3072:vhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+JP/P6nrG:vhzOv2fM13jsIFSHNT7P/P6rG

Score
10/10
remcoshostevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

185.241.208.113:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    JavaUpdate.exe

  • copy_folder

    JavaUpdater

  • 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

    Java

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_fcstxhoeka

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Java Updater

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      112-44-0x0000000000400000-0x0000000000419000-memory.dmp

    • Size

      100KB

    • MD5

      f3b7cddc98281485c9bcf40314a8cfa1

    • SHA1

      a797b03d4f0aa176ac3c31509a612ff07c1a15d7

    • SHA256

      7baa3ae97c421ab54fa95d3fceca3f11900c7fc04970652400d803da18f22122

    • SHA512

      5b57a55bd40a4f57222312279989b2398bc472b57a4ca098cdbcc9456b168d9a2fefe54b3fc24ba9fcb1edb9ab60159e6887addda1285184bccb33d76010068a

    • SSDEEP

      3072:vhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+JP/P6nrG:vhzOv2fM13jsIFSHNT7P/P6rG

    Score
    10/10
    remcoshostevasionpersistencerattrojan

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Modifies WinLogon

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Defense Evasion

Modify Registry

5
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks