General

  • Target

    SteamFixer.bat

  • Size

    1.8MB

  • Sample

    240512-v131habb59

  • MD5

    5fec429b3199a0a1a80641b4ad36038e

  • SHA1

    7bf0ec7986d34c00258abb832dec9b04198e3f9a

  • SHA256

    cc3c38fdbee488c38a9b02ddffa45daeae772b39fab015d2919e4254cc98d265

  • SHA512

    cd62e1b154ca822543aaaa1250c2f61220d66507b0fd531dd2e56aadc73053ba00bd893e55d11135a6fe7aa166a8e80087038dc74a5f9ff256b0812b4de4cc0c

  • SSDEEP

    24576:gZejbH1GKwNUfuuzANOANVQ6AZ7PekjzU7tCOkaF4Ui/khlEGLfskhaoONK8Ggrv:gSOwWpNVQBK413/Mu518sx

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Shiba

C2

address-penetration.gl.at.ply.gg:46802

Mutex

c781d19d-001c-4ffe-ab22-07398f82437d

Attributes
  • encryption_key

    A88D7FED7F655EBDC4F99C21BAE5EC62300AADC7

  • install_name

    $sxr-insta.exe

  • log_directory

    $sxr-logs

  • reconnect_delay

    1000

  • startup_key

    $sxr-mstha

  • subdirectory

    $sxr-start

Targets

    • Target

      SteamFixer.bat

    • Size

      1.8MB

    • MD5

      5fec429b3199a0a1a80641b4ad36038e

    • SHA1

      7bf0ec7986d34c00258abb832dec9b04198e3f9a

    • SHA256

      cc3c38fdbee488c38a9b02ddffa45daeae772b39fab015d2919e4254cc98d265

    • SHA512

      cd62e1b154ca822543aaaa1250c2f61220d66507b0fd531dd2e56aadc73053ba00bd893e55d11135a6fe7aa166a8e80087038dc74a5f9ff256b0812b4de4cc0c

    • SSDEEP

      24576:gZejbH1GKwNUfuuzANOANVQ6AZ7PekjzU7tCOkaF4Ui/khlEGLfskhaoONK8Ggrv:gSOwWpNVQBK413/Mu518sx

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

MITRE ATT&CK Enterprise v15

Tasks