General

  • Target

    receipt#008.exe

  • Size

    2.0MB

  • Sample

    240516-rpea8agg3w

  • MD5

    a57705b66d0a05a2d4a91d9437da77a3

  • SHA1

    7689db86e4245236dfd4c65f1107c9b8c0015a2b

  • SHA256

    180335bab0928ab001b282e02bd9ef13160dd4dfbef31b1db7b58467293b6965

  • SHA512

    1395b9dfecc76af97d4fc05443d1a833de55bd1d41ae6f4cee637306c836f6b8ccff333b066caea16f4a0af8c63412ed10dfa467f323db221a877b14b4f83d5b

  • SSDEEP

    24576:UyKMIERhnuMiaOYZzPjOFP6rqmpfkIHwx1M23+QC9XOHmLI9c7fqmp+b:hKzERJuyzPjOZ6Hwx3UXwmLIjYo

Malware Config

Extracted

Family

remcos

Botnet

nuts

C2

remgod54.duckdns.org:9898

backto54.duckdns.org:9897

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmcvbwxcdfgbf-LAYF1U

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    homedepot,etsy,checkout

Extracted

Family

xworm

Version

5.0

Mutex

UxOlPOZZNwNV9srk

Attributes
  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/Dh8E7H3R

aes.plain

Targets

    • Target

      receipt#008.exe

    • Size

      2.0MB

    • MD5

      a57705b66d0a05a2d4a91d9437da77a3

    • SHA1

      7689db86e4245236dfd4c65f1107c9b8c0015a2b

    • SHA256

      180335bab0928ab001b282e02bd9ef13160dd4dfbef31b1db7b58467293b6965

    • SHA512

      1395b9dfecc76af97d4fc05443d1a833de55bd1d41ae6f4cee637306c836f6b8ccff333b066caea16f4a0af8c63412ed10dfa467f323db221a877b14b4f83d5b

    • SSDEEP

      24576:UyKMIERhnuMiaOYZzPjOFP6rqmpfkIHwx1M23+QC9XOHmLI9c7fqmp+b:hKzERJuyzPjOZ6Hwx3UXwmLIjYo

    • Detect Xworm Payload

    • Remcos

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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Checks computer location settings

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

    • Drops startup file

    • 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.

    • Accesses Microsoft Outlook accounts

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks