General

  • Target

    58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

  • Size

    1.2MB

  • Sample

    221123-nfk6magf93

  • MD5

    9509104c2389315af9357e4ce52242a0

  • SHA1

    d9b308391ba881f5c2ebb68561ae857c4e11d398

  • SHA256

    58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

  • SHA512

    b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

  • SSDEEP

    24576:YM+L74mBfNUstzofl/A2LlwzCExB290oFx5PdKHFMH6bjx8alzD03r8JN:3/AaluB2BUHFMabjSq0I

Malware Config

Extracted

Family

remcos

Botnet

Eric-Host

C2

craigjonson91211.freedynamicdns.net:2011

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    wee.exe

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-TJGIFV

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    qos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

    • Size

      1.2MB

    • MD5

      9509104c2389315af9357e4ce52242a0

    • SHA1

      d9b308391ba881f5c2ebb68561ae857c4e11d398

    • SHA256

      58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

    • SHA512

      b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

    • SSDEEP

      24576:YM+L74mBfNUstzofl/A2LlwzCExB290oFx5PdKHFMH6bjx8alzD03r8JN:3/AaluB2BUHFMabjSq0I

    • Remcos

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

    • Executes dropped EXE

    • Checks computer location settings

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

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks