General

  • Target

    1d2f18fc1f37803454f262fdd9a7d13a61009a748c56f26440b69e5463b08dd0

  • Size

    1.4MB

  • Sample

    230801-dgwcwacg98

  • MD5

    58af219ac4a0790a2d0681e26f21c79c

  • SHA1

    3dfd26cf3e9e8a95fe334b1bf040677bf8b01520

  • SHA256

    1d2f18fc1f37803454f262fdd9a7d13a61009a748c56f26440b69e5463b08dd0

  • SHA512

    4ef004cb015478b6ed59f323cdc3412326c6126bc3c91aa829b4987da7d17c5273d5d05ea318d9f74e2177ce32c435462f70cc3c71ae91d2bb48387852a32c70

  • 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

      1d2f18fc1f37803454f262fdd9a7d13a61009a748c56f26440b69e5463b08dd0

    • Size

      1.4MB

    • MD5

      58af219ac4a0790a2d0681e26f21c79c

    • SHA1

      3dfd26cf3e9e8a95fe334b1bf040677bf8b01520

    • SHA256

      1d2f18fc1f37803454f262fdd9a7d13a61009a748c56f26440b69e5463b08dd0

    • SHA512

      4ef004cb015478b6ed59f323cdc3412326c6126bc3c91aa829b4987da7d17c5273d5d05ea318d9f74e2177ce32c435462f70cc3c71ae91d2bb48387852a32c70

    • 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