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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    31/01/2025, 01:36

General

  • Target

    KAZZAK Nova/KAZZAK Nova/Installer.exe

  • Size

    3.1MB

  • MD5

    c85c392d4f402f6d1efe69a397874fc8

  • SHA1

    d7bf20fc60a832f2c101fb47133fde314c164427

  • SHA256

    e33a67ca41bd7f1dbe94489e953d2a6d720dccd5fb82d62353946a193be862eb

  • SHA512

    605c12a4140fb1a18f76112040704c9c41a7b78b887324b12852400b56ab1c7e20d1587dfdc9ed62de1480eecaeb0e5b6f845157637aeecc429bdd60a068c971

  • SSDEEP

    49152:3vrI22SsaNYfdPBldt698dBcjHZTRJ6VbR3LoGdkTHHB72eh2NT:3vU22SsaNYfdPBldt6+dBcjHZTRJ6n

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

kaziahlds-23371.portmap.io:23371

Mutex

04d20254-5898-4b4a-8396-e1aacfd3225f

Attributes
  • encryption_key

    1127B18519097512D1F8F01C3CC393354B9F8404

  • install_name

    Loader.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    KAZZAK

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\KAZZAK Nova\KAZZAK Nova\Installer.exe
    "C:\Users\Admin\AppData\Local\Temp\KAZZAK Nova\KAZZAK Nova\Installer.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "KAZZAK" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2800
    • C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "KAZZAK" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe

    Filesize

    3.1MB

    MD5

    c85c392d4f402f6d1efe69a397874fc8

    SHA1

    d7bf20fc60a832f2c101fb47133fde314c164427

    SHA256

    e33a67ca41bd7f1dbe94489e953d2a6d720dccd5fb82d62353946a193be862eb

    SHA512

    605c12a4140fb1a18f76112040704c9c41a7b78b887324b12852400b56ab1c7e20d1587dfdc9ed62de1480eecaeb0e5b6f845157637aeecc429bdd60a068c971

  • memory/2660-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

    Filesize

    4KB

  • memory/2660-1-0x0000000001270000-0x0000000001594000-memory.dmp

    Filesize

    3.1MB

  • memory/2660-2-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2660-9-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2676-8-0x0000000000110000-0x0000000000434000-memory.dmp

    Filesize

    3.1MB

  • memory/2676-11-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2676-10-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2676-12-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB