General

  • Target
    c4703b84c3c69c969924ba2d14c380a5473a5617caecee07147f36a1196d194c.bin
  • Size 232KB
  • Sample260729-bpad9s1fmg
  • SHA256 c4703b84c3c69c969924ba2d14c380a5473a5617caecee07147f36a1196d194c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • server.mailbox-joikqqyo.com:7004

  • 155.254.98.233:7004

Mutex
  • SAnozmP14xSj3S01

Attributes
  • install_file

    USB.exe

aes.plain
aes.plain

Extracted

Family
  • remcos

Version
  • 7.2.6 Pro

Botnet
  • RemoteHost

C2
  • 15.204.115.143:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-1A8F18

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      c4703b84c3c69c969924ba2d14c380a5473a5617caecee07147f36a1196d194c.bin
    • Size 232KB
    • SHA256 c4703b84c3c69c969924ba2d14c380a5473a5617caecee07147f36a1196d194c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Remcos

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

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Adds policy Run key to start application

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks