General

  • Target

    f78002f680950372a3ede345fbcd0238af1d97b363cffee9786b67b81afe5524

  • Size

    1.7MB

  • Sample

    240623-garb5a1flc

  • MD5

    85310514a52ac2bafd84419c2804c77a

  • SHA1

    604f316febb58698d6c5509ec6e274dbc903ab3b

  • SHA256

    f78002f680950372a3ede345fbcd0238af1d97b363cffee9786b67b81afe5524

  • SHA512

    fe32d2bf1c07a44e44978d97c4026478c1eab6864b7df675e8d3abb50146057c8a462a8be4621c3c969b7e5715e6740c282e4949f9c84c4fdb3d5a03a76acb5c

  • SSDEEP

    24576:+D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYaF:+p7E+QrFUBgq29

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

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

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      f78002f680950372a3ede345fbcd0238af1d97b363cffee9786b67b81afe5524

    • Size

      1.7MB

    • MD5

      85310514a52ac2bafd84419c2804c77a

    • SHA1

      604f316febb58698d6c5509ec6e274dbc903ab3b

    • SHA256

      f78002f680950372a3ede345fbcd0238af1d97b363cffee9786b67b81afe5524

    • SHA512

      fe32d2bf1c07a44e44978d97c4026478c1eab6864b7df675e8d3abb50146057c8a462a8be4621c3c969b7e5715e6740c282e4949f9c84c4fdb3d5a03a76acb5c

    • SSDEEP

      24576:+D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYaF:+p7E+QrFUBgq29

    • Remcos

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

    • 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

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

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Tasks