General

  • Target

    e70bd0ca33bf3456689336f331e078d39636047f9356e34897659fa0593f7c03

  • Size

    1.4MB

  • Sample

    230802-bx7pqscb42

  • MD5

    d0bdc4b41bc553687e0d7ee6a937d398

  • SHA1

    4f83396527b3e448b53c15cab89e95f67501b560

  • SHA256

    e70bd0ca33bf3456689336f331e078d39636047f9356e34897659fa0593f7c03

  • SHA512

    a5fa434c1ab9403b31ed106aeab82255c439510153daedce766e272ca1fb2613979fecef51f91156f4f4ee48a074de65bfb3fa23e450cd5e96c9f8d23f2d7e6d

  • 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

      e70bd0ca33bf3456689336f331e078d39636047f9356e34897659fa0593f7c03

    • Size

      1.4MB

    • MD5

      d0bdc4b41bc553687e0d7ee6a937d398

    • SHA1

      4f83396527b3e448b53c15cab89e95f67501b560

    • SHA256

      e70bd0ca33bf3456689336f331e078d39636047f9356e34897659fa0593f7c03

    • SHA512

      a5fa434c1ab9403b31ed106aeab82255c439510153daedce766e272ca1fb2613979fecef51f91156f4f4ee48a074de65bfb3fa23e450cd5e96c9f8d23f2d7e6d

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Adds Run key to start application

    • 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