General

  • Target

    build.exe

  • Size

    6.1MB

  • Sample

    250106-szx2rasmbr

  • MD5

    1fd3c7acad176220bb1c7e5a4679d0e7

  • SHA1

    ee05cc5609d9cdc93f98bfec5aa63a3e679c5b17

  • SHA256

    dcf52482ca002b4cd5822419886680906ddf5af41af269791e2332d039f6314f

  • SHA512

    e76e47be32e49734a8d240360dc4c7f26ddac40414d73eb68ef5e54706edeaccde0e3ba99915c5c83f3e0f55412ec7fa5ec5dd7f4ede8d599ebfd8275befce93

  • SSDEEP

    196608:RaiSkSIlLTUcwti7TQl2NgVg01MWAXAkuujCPX9YG9he5GnQCAJKN:QkSopwtQQl2aOtXADu8X9Y95GQLJ

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

51.89.44.68:8848

Mutex

etb3t1tr5n

Attributes
  • delay

    1

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %Temp%

aes.plain

Targets

    • Target

      build.exe

    • Size

      6.1MB

    • MD5

      1fd3c7acad176220bb1c7e5a4679d0e7

    • SHA1

      ee05cc5609d9cdc93f98bfec5aa63a3e679c5b17

    • SHA256

      dcf52482ca002b4cd5822419886680906ddf5af41af269791e2332d039f6314f

    • SHA512

      e76e47be32e49734a8d240360dc4c7f26ddac40414d73eb68ef5e54706edeaccde0e3ba99915c5c83f3e0f55412ec7fa5ec5dd7f4ede8d599ebfd8275befce93

    • SSDEEP

      196608:RaiSkSIlLTUcwti7TQl2NgVg01MWAXAkuujCPX9YG9he5GnQCAJKN:QkSopwtQQl2aOtXADu8X9Y95GQLJ

    • AsyncRat

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

    • Asyncrat family

    • Async RAT payload

    • Downloads MZ/PE file

    • 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.

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks