General

  • Target

    82fbad856404c1e514dd5771957dd47359684caedb6aaa296d2ef3cdb95171d7

  • Size

    1.4MB

  • Sample

    230801-cwfqasdg7s

  • MD5

    b7cf70d3f799eb0f6a3b2478560a3ffd

  • SHA1

    094c2f279aa76eadc3508d645cabd4d6da283464

  • SHA256

    82fbad856404c1e514dd5771957dd47359684caedb6aaa296d2ef3cdb95171d7

  • SHA512

    6f385e587cc351c6efccc11a6599aacc5c2ce88f4d365e1a2b1878f8b424245e963371b2e530d569e920517d1735569e882681a821782a0128dda359a8950910

  • 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

      82fbad856404c1e514dd5771957dd47359684caedb6aaa296d2ef3cdb95171d7

    • Size

      1.4MB

    • MD5

      b7cf70d3f799eb0f6a3b2478560a3ffd

    • SHA1

      094c2f279aa76eadc3508d645cabd4d6da283464

    • SHA256

      82fbad856404c1e514dd5771957dd47359684caedb6aaa296d2ef3cdb95171d7

    • SHA512

      6f385e587cc351c6efccc11a6599aacc5c2ce88f4d365e1a2b1878f8b424245e963371b2e530d569e920517d1735569e882681a821782a0128dda359a8950910

    • 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