Analysis

  • max time kernel
    444s
  • max time network
    448s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 22:18

General

  • Target

    Seroxen.exe

  • Size

    3.2MB

  • MD5

    ecd1d786fb4e8d2fdd9fde6d5ad3f5d3

  • SHA1

    bea4d57cb8cc632b0074bfd1ef3739ee11399df1

  • SHA256

    f5dccd02d415f96bbde7cdcd9afa5376911166e795486e772a3ffa124fe45302

  • SHA512

    123086110b392ab14ca99b91b246266b93b21e0036cde9919649edcd83751cf163688a7795a781c6c3190cc3dcdc272ff7b3b9bc6c617cbac0cbc18908a46f1e

  • SSDEEP

    49152:oei8dGFjxJFp/DGoye3Z4LVoc96cppQI2VlUTHHB72eh2NTf:oeCFjxJTbGor3Z4LVocx+b

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SKIDS

C2

147.185.221.22:10340

Mutex

9b51d4f5-bfe4-4a06-ba47-dcfbf9fe8529

Attributes
  • encryption_key

    AEAE9E349BB922A243A5FF22FF4A80613533B71B

  • install_name

    Windows Host Process.exe

  • log_directory

    Windows-Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Host Process

  • subdirectory

    Windows

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 5 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 6 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\Seroxen.exe
    "C:\Users\Admin\AppData\Local\Temp\Seroxen.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4384
    • C:\Windows\system32\Windows\Windows Host Process.exe
      "C:\Windows\system32\Windows\Windows Host Process.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2636
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\system32\Windows\Windows Host Process.exe

    Filesize

    3.2MB

    MD5

    ecd1d786fb4e8d2fdd9fde6d5ad3f5d3

    SHA1

    bea4d57cb8cc632b0074bfd1ef3739ee11399df1

    SHA256

    f5dccd02d415f96bbde7cdcd9afa5376911166e795486e772a3ffa124fe45302

    SHA512

    123086110b392ab14ca99b91b246266b93b21e0036cde9919649edcd83751cf163688a7795a781c6c3190cc3dcdc272ff7b3b9bc6c617cbac0cbc18908a46f1e

  • memory/2208-0-0x00007FFC5D4F3000-0x00007FFC5D4F5000-memory.dmp

    Filesize

    8KB

  • memory/2208-1-0x0000000000EB0000-0x00000000011DC000-memory.dmp

    Filesize

    3.2MB

  • memory/2208-2-0x00007FFC5D4F0000-0x00007FFC5DFB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2208-10-0x00007FFC5D4F0000-0x00007FFC5DFB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2636-9-0x00007FFC5D4F0000-0x00007FFC5DFB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2636-11-0x00007FFC5D4F0000-0x00007FFC5DFB1000-memory.dmp

    Filesize

    10.8MB

  • memory/2636-12-0x000000001B8D0000-0x000000001B920000-memory.dmp

    Filesize

    320KB

  • memory/2636-13-0x000000001B9E0000-0x000000001BA92000-memory.dmp

    Filesize

    712KB

  • memory/2636-14-0x00007FFC5D4F0000-0x00007FFC5DFB1000-memory.dmp

    Filesize

    10.8MB