General

  • Target

    404f5205f0a3bce8bda75546c4681b3408b56f421613fa141bf07dd6c0f8f89b

  • Size

    1.4MB

  • Sample

    230801-cvh42acf63

  • MD5

    dc7b7d99efff12c9b62f9aa33f0344bb

  • SHA1

    d06e71fb66d9038056ef1327cbfe220b1e61662f

  • SHA256

    404f5205f0a3bce8bda75546c4681b3408b56f421613fa141bf07dd6c0f8f89b

  • SHA512

    7b0186b33193eaf45b03174227f2ffe03fbf356206c04b1cf41059aa21d89c0dd100b8c05348d8daf1c4cccead7fd4da65cdf02dcaf0a36745a1b79b6784c28a

  • 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

      404f5205f0a3bce8bda75546c4681b3408b56f421613fa141bf07dd6c0f8f89b

    • Size

      1.4MB

    • MD5

      dc7b7d99efff12c9b62f9aa33f0344bb

    • SHA1

      d06e71fb66d9038056ef1327cbfe220b1e61662f

    • SHA256

      404f5205f0a3bce8bda75546c4681b3408b56f421613fa141bf07dd6c0f8f89b

    • SHA512

      7b0186b33193eaf45b03174227f2ffe03fbf356206c04b1cf41059aa21d89c0dd100b8c05348d8daf1c4cccead7fd4da65cdf02dcaf0a36745a1b79b6784c28a

    • 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