Overview

overview

10

Static

static

10

b03b5a3d15...93.exe

windows7-x64

10

b03b5a3d15...93.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b03b5a3d15d163fff5e26fa42e95469e4472fc8d76cfd5db7de5685f2766b993.exe

  • Size

    36KB

  • Sample

    240414-b1xc6sfh8v

  • MD5

    8b228080da0e6017e7f9f6732789983c

  • SHA1

    de557d526eda0f2e8a3818d49279d071adf303c1

  • SHA256

    b03b5a3d15d163fff5e26fa42e95469e4472fc8d76cfd5db7de5685f2766b993

  • SHA512

    caad327890c8a0ed28b8e65f342e1c10da5d944f9ff2254bddb8f5f7e0056eb087ace8ca489a44d75b76bca14666e982ef3d1521843833624f2c07656eec96c7

  • SSDEEP

    768:GNnmZ/8vPlLUdhfJ8v6utFpVsOHjPgpG5ZD7D114r1:Inwu4DejVdiG5/mr

Score
10/10
remcoshostpersistencerat

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

    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

    Java

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_klbwfjyviz

  • 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

      b03b5a3d15d163fff5e26fa42e95469e4472fc8d76cfd5db7de5685f2766b993.exe

    • Size

      36KB

    • MD5

      8b228080da0e6017e7f9f6732789983c

    • SHA1

      de557d526eda0f2e8a3818d49279d071adf303c1

    • SHA256

      b03b5a3d15d163fff5e26fa42e95469e4472fc8d76cfd5db7de5685f2766b993

    • SHA512

      caad327890c8a0ed28b8e65f342e1c10da5d944f9ff2254bddb8f5f7e0056eb087ace8ca489a44d75b76bca14666e982ef3d1521843833624f2c07656eec96c7

    • SSDEEP

      768:GNnmZ/8vPlLUdhfJ8v6utFpVsOHjPgpG5ZD7D114r1:Inwu4DejVdiG5/mr

    Score
    10/10
    remcoshostpersistencerat

    • Remcos

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

      ratremcos

    • Detects executables built or packed with MPress PE compressor

    • detects Windows exceutables potentially bypassing UAC using eventvwr.exe

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

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