General

  • Target

    baccdb09b047aa5ab46238b8fd78f15fcd420587fad035e1e24bac410f0ea812

  • Size

    1.4MB

  • Sample

    230801-d2b5qsda33

  • MD5

    a714834acc6294db4640d0fd85468223

  • SHA1

    9d0d08b1554dae121b4e5f21afabe1cb39221dac

  • SHA256

    baccdb09b047aa5ab46238b8fd78f15fcd420587fad035e1e24bac410f0ea812

  • SHA512

    48e5042728b080535145d4c0738670b3a52da4ed4d7c3e4205c1f6dbe6dcf28b4f0eef7ef5195d21d14ad0c5038b1b868786e5f7802f7c15132b8542cd65d364

  • SSDEEP

    24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

-

C2

94.131.105.161:12344

Mutex

QSR_MUTEX_UEgITWnMKnRP3EZFzK

Attributes
  • encryption_key

    5Q0JQBQQfAUHRJTcAIOF

  • install_name

    lient.exe

  • log_directory

    Lugs

  • reconnect_delay

    3000

  • startup_key

    itartup

  • subdirectory

    SubDir

Targets

    • Target

      baccdb09b047aa5ab46238b8fd78f15fcd420587fad035e1e24bac410f0ea812

    • Size

      1.4MB

    • MD5

      a714834acc6294db4640d0fd85468223

    • SHA1

      9d0d08b1554dae121b4e5f21afabe1cb39221dac

    • SHA256

      baccdb09b047aa5ab46238b8fd78f15fcd420587fad035e1e24bac410f0ea812

    • SHA512

      48e5042728b080535145d4c0738670b3a52da4ed4d7c3e4205c1f6dbe6dcf28b4f0eef7ef5195d21d14ad0c5038b1b868786e5f7802f7c15132b8542cd65d364

    • SSDEEP

      24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Modifies Windows Firewall

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • 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