General

  • Target

    JaffaCakes118_d9be6e743c8b0aa8b4b90317c7e67c82

  • Size

    634KB

  • Sample

    250110-d1445azqbx

  • MD5

    d9be6e743c8b0aa8b4b90317c7e67c82

  • SHA1

    9053adbbb2d16f6605a6f177e4780902c4b3eb29

  • SHA256

    de044337b12eb226975f080442f42dd95b506d2ae96fdb6473d5143bc35302ea

  • SHA512

    faf647fff8299279e5bd738a63cc5e5149cb09eb6bf0a594ea24d4a960c44a051ff315b076bddf260a139d10530a9910350554763259cc96604db093f9700e19

  • SSDEEP

    12288:abUzps8KWpghT5NF+048vy/PTm23n2Oi6qQfE+lxWXfJMd+Wsssb/hyDVebAk:dpXKWpO5NI04m23nrw8xWE+3ssb/hyDC

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

WeChatsetup

C2

grace.adds-only.xyz:1619

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    WeChatsetup.exe

  • copy_folder

    WeChatx

  • 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

    WeChatxl

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-2DS55H

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    WeChatx

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Targets

    • Target

      JaffaCakes118_d9be6e743c8b0aa8b4b90317c7e67c82

    • Size

      634KB

    • MD5

      d9be6e743c8b0aa8b4b90317c7e67c82

    • SHA1

      9053adbbb2d16f6605a6f177e4780902c4b3eb29

    • SHA256

      de044337b12eb226975f080442f42dd95b506d2ae96fdb6473d5143bc35302ea

    • SHA512

      faf647fff8299279e5bd738a63cc5e5149cb09eb6bf0a594ea24d4a960c44a051ff315b076bddf260a139d10530a9910350554763259cc96604db093f9700e19

    • SSDEEP

      12288:abUzps8KWpghT5NF+048vy/PTm23n2Oi6qQfE+lxWXfJMd+Wsssb/hyDVebAk:dpXKWpO5NI04m23nrw8xWE+3ssb/hyDC

    • Remcos

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

    • Remcos family

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks