Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24-12-2024 11:33

General

  • Target

    Synapse Loader.exe

  • Size

    3.1MB

  • MD5

    8cff9bae2bc1b05b8b4dd4ab5946c8b7

  • SHA1

    93369919961d4f4cbaa65e7728ead8fd9d4dea93

  • SHA256

    ae1b306c87730bbf7b1cd56f687903f396f8295d7d128c9897ebb5fb0ad14933

  • SHA512

    73a9969b7dcda426b09a2a8566ed8c466e30752a161eade7e331743946d4cbcff589e3ec79d72f4b3ebb3e0e4a6665de29b87b409e7b4944d170518c0186a85e

  • SSDEEP

    49152:avct62XlaSFNWPjljiFa2RoUYIkxxNESETk/itLoGdyOsTHHB72eh2NT:avg62XlaSFNWPjljiFXRoUYISxal5

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svhost

C2

vnt-39824.portmap.host:39824

Mutex

a8e213b3-b8da-419b-8e37-bca8a65bb11c

Attributes
  • encryption_key

    20999754454467FF7C9649079A3ADDFF8252D170

  • install_name

    svhost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svhost

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 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\Synapse Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\Synapse Loader.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "svhost" /sc ONLOGON /tr "C:\Program Files\SubDir\svhost.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2256
    • C:\Program Files\SubDir\svhost.exe
      "C:\Program Files\SubDir\svhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "svhost" /sc ONLOGON /tr "C:\Program Files\SubDir\svhost.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2660
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:2676

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\SubDir\svhost.exe

      Filesize

      3.1MB

      MD5

      8cff9bae2bc1b05b8b4dd4ab5946c8b7

      SHA1

      93369919961d4f4cbaa65e7728ead8fd9d4dea93

      SHA256

      ae1b306c87730bbf7b1cd56f687903f396f8295d7d128c9897ebb5fb0ad14933

      SHA512

      73a9969b7dcda426b09a2a8566ed8c466e30752a161eade7e331743946d4cbcff589e3ec79d72f4b3ebb3e0e4a6665de29b87b409e7b4944d170518c0186a85e

    • memory/2012-7-0x0000000001010000-0x0000000001334000-memory.dmp

      Filesize

      3.1MB

    • memory/2012-10-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

      Filesize

      9.9MB

    • memory/2012-9-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

      Filesize

      9.9MB

    • memory/2012-11-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

      Filesize

      9.9MB

    • memory/2016-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

      Filesize

      4KB

    • memory/2016-1-0x0000000000380000-0x00000000006A4000-memory.dmp

      Filesize

      3.1MB

    • memory/2016-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

      Filesize

      9.9MB

    • memory/2016-8-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

      Filesize

      9.9MB