General

  • Target

    downloader.exe

  • Size

    30.1MB

  • Sample

    250103-3x28ssznfz

  • MD5

    b4e5b6354eb2842cf71200bd36ce744d

  • SHA1

    0f2fdaeb08defd1f1f72d7bcf03dc638758765a9

  • SHA256

    d96bb68c61f263143c388c08491789b47809cc70a3a1b812e68cc680a202b483

  • SHA512

    9a0c94cb1e050c88b7e9bcb61abc37e73108e4c9a1c2b8e471b457b5273105a437ecdebbdcdb25f9a4df4ccbef1645dbd2ec429c9c19a0ce98af3ae07e148759

  • SSDEEP

    393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7a2mo+AJCcLKAo:R9w9wD5xUe2bJCcQ

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

Mutex

ClDsaNqHeTP9

Attributes
  • delay

    3

  • install

    true

  • install_file

    AsyncRat.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

xworm

Version

3.1

C2

83.38.24.1:1603

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    USB.exe

Targets

    • Target

      downloader.exe

    • Size

      30.1MB

    • MD5

      b4e5b6354eb2842cf71200bd36ce744d

    • SHA1

      0f2fdaeb08defd1f1f72d7bcf03dc638758765a9

    • SHA256

      d96bb68c61f263143c388c08491789b47809cc70a3a1b812e68cc680a202b483

    • SHA512

      9a0c94cb1e050c88b7e9bcb61abc37e73108e4c9a1c2b8e471b457b5273105a437ecdebbdcdb25f9a4df4ccbef1645dbd2ec429c9c19a0ce98af3ae07e148759

    • SSDEEP

      393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7a2mo+AJCcLKAo:R9w9wD5xUe2bJCcQ

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks