General

  • Target

    Loader.exe

  • Size

    63KB

  • Sample

    241121-266rxawqfn

  • MD5

    7ceb11ebb7a55e33a82bc3b66f554e79

  • SHA1

    8dfd574ad06ded662d92d81b72f14c1914ac45b5

  • SHA256

    aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

  • SHA512

    d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

  • SSDEEP

    768:rig6BqomfHz4c78F3C8A+XuLvRIOdJD7P7DEhfW1+T4iSBGHmDbDOphLoXaHnCtB:i+4/WD7jhBYUbghiynCCundpqKmY7

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

technical-southwest.gl.at.ply.gg:58694

Attributes
  • delay

    1

  • install

    true

  • install_file

    WINDOWS.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Loader.exe

    • Size

      63KB

    • MD5

      7ceb11ebb7a55e33a82bc3b66f554e79

    • SHA1

      8dfd574ad06ded662d92d81b72f14c1914ac45b5

    • SHA256

      aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

    • SHA512

      d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

    • SSDEEP

      768:rig6BqomfHz4c78F3C8A+XuLvRIOdJD7P7DEhfW1+T4iSBGHmDbDOphLoXaHnCtB:i+4/WD7jhBYUbghiynCCundpqKmY7

    • AsyncRat

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

    • Asyncrat family

    • Stealerium

      An open source info stealer written in C# first seen in May 2022.

    • Stealerium family

    • Async RAT payload

    • Renames multiple (3162) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • 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

    • Looks up external IP address via web service

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

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks