General

  • Target

    3efbbd06f85fd82a1baab1ab3c27e0aedfee6a3ae69e400084591fc8c3b35cad

  • Size

    1.4MB

  • Sample

    230801-cy6phadg8v

  • MD5

    5c6086f36446a53ffb1db84b60e039c6

  • SHA1

    b10d6503484f14fd6964b697ad9c9becfe80c069

  • SHA256

    3efbbd06f85fd82a1baab1ab3c27e0aedfee6a3ae69e400084591fc8c3b35cad

  • SHA512

    155d217ab9b97259341ec0cd57fddd2695d93b0628b2f5991889c6e6f6b95b6ea101f74ee0fd7a5c6c17071f3502849f1de45d0d45b9bc9ad99fe35ea54e94d0

  • 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

      3efbbd06f85fd82a1baab1ab3c27e0aedfee6a3ae69e400084591fc8c3b35cad

    • Size

      1.4MB

    • MD5

      5c6086f36446a53ffb1db84b60e039c6

    • SHA1

      b10d6503484f14fd6964b697ad9c9becfe80c069

    • SHA256

      3efbbd06f85fd82a1baab1ab3c27e0aedfee6a3ae69e400084591fc8c3b35cad

    • SHA512

      155d217ab9b97259341ec0cd57fddd2695d93b0628b2f5991889c6e6f6b95b6ea101f74ee0fd7a5c6c17071f3502849f1de45d0d45b9bc9ad99fe35ea54e94d0

    • 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.

    • 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