General

  • Target

    99.exe

  • Size

    3.1MB

  • Sample

    241025-a7ldtazdmr

  • MD5

    4d354ddf83547df347c249ee10a01c6d

  • SHA1

    bf1230df5257ba1db8ab7fbf357f01f545e999a2

  • SHA256

    dbd3b7317e7aeab2a126c46a2b688c7a68fcc0e1d8f5ed7e011dd3eca80cc50c

  • SHA512

    91771ab55252bf6edebe418d25bde4211302414d50303bb466b9dc1ec572f1b44fcb7ca0f16b48710165c0a6349cb653e795ade58ae9b168413f5ef82308e395

  • SSDEEP

    49152:6vBt62XlaSFNWPjljiFa2RoUYIyD6x1JBLaGd1THHB72eh2NT:6vr62XlaSFNWPjljiFXRoUYIyD6r

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

2.tcp.us-cal-1.ngrok.io:14537

Mutex

0f60b981-1a45-472b-acf2-32d2fa49956b

Attributes
  • encryption_key

    B3CE4ADBCFC896D87D5632035EB0E3D075AB14F9

  • install_name

    LOGI_INT.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    LOGI_INT

  • subdirectory

    SubDir

Targets

    • Target

      99.exe

    • Size

      3.1MB

    • MD5

      4d354ddf83547df347c249ee10a01c6d

    • SHA1

      bf1230df5257ba1db8ab7fbf357f01f545e999a2

    • SHA256

      dbd3b7317e7aeab2a126c46a2b688c7a68fcc0e1d8f5ed7e011dd3eca80cc50c

    • SHA512

      91771ab55252bf6edebe418d25bde4211302414d50303bb466b9dc1ec572f1b44fcb7ca0f16b48710165c0a6349cb653e795ade58ae9b168413f5ef82308e395

    • SSDEEP

      49152:6vBt62XlaSFNWPjljiFa2RoUYIyD6x1JBLaGd1THHB72eh2NT:6vr62XlaSFNWPjljiFXRoUYIyD6r

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks