General

  • Target

    win64_svchost.exe

  • Size

    3.2MB

  • Sample

    250131-kqe6kstjem

  • MD5

    f31a91bff6bb5805f4f7b95c0a27cb2a

  • SHA1

    8eeef2262c4288c035d7be99f27ce478dae008ce

  • SHA256

    f9fc23fe47d3c918c7bc24cbe14e56d9b0024e31660f2a280f3991291b3e5882

  • SHA512

    07f750faf48ef505de12a07acf64136468702ba07d7b5ec9ecbc3d2f6e5c04c3c7ce0ff4b178c5f2f3a1df2b9b0ea8f54687f90137fa58603ddd0896733eaacb

  • SSDEEP

    98304:p1AhvWM65Mf9cZR4FklYJr41ADevpgaSoJxqGT4q:WvWM6iGKkCJ0GevCaXsi4q

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svhost32

C2

185.147.125.77:4782

Mutex

9500f2e5-aa22-4d12-a2ea-09ddc5050666

Attributes
  • encryption_key

    BD29CA798222621C677ECD67804E6D9D0A95CFCB

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      win64_svchost.exe

    • Size

      3.2MB

    • MD5

      f31a91bff6bb5805f4f7b95c0a27cb2a

    • SHA1

      8eeef2262c4288c035d7be99f27ce478dae008ce

    • SHA256

      f9fc23fe47d3c918c7bc24cbe14e56d9b0024e31660f2a280f3991291b3e5882

    • SHA512

      07f750faf48ef505de12a07acf64136468702ba07d7b5ec9ecbc3d2f6e5c04c3c7ce0ff4b178c5f2f3a1df2b9b0ea8f54687f90137fa58603ddd0896733eaacb

    • SSDEEP

      98304:p1AhvWM65Mf9cZR4FklYJr41ADevpgaSoJxqGT4q:WvWM6iGKkCJ0GevCaXsi4q

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to execute payload.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks