Analysis

  • max time kernel
    8s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28-12-2024 15:30

General

  • Target

    Client_protected.exe

  • Size

    6.5MB

  • MD5

    19574d1c471ceaa99d0d05321e7beba4

  • SHA1

    9c192eee06421e8a557b0afe0355545bae5366e6

  • SHA256

    df606ef08b80c10d12a7372505f51e2641b263ded0280edcaf9085e7419b5f3e

  • SHA512

    b73a16cd6f529cb8688b96f7039cfbca49c191b32b2240b56681125a4f8f63ceb625ae0077d1a845319f1a035524f314c95c3ef259cc7d284d7b557460db3244

  • SSDEEP

    98304:ytpOyr9VNf1P2tLnkJfA5Wmon5miZlE5aJ4aoAqq1k4MjNU+3:Z+jZ+5NgFbMy4

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

85.198.108.36:7667

Mutex

egghlcckqridunl

Attributes
  • delay

    6

  • install

    false

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Themida packer 3 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client_protected.exe
    "C:\Users\Admin\AppData\Local\Temp\Client_protected.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2052 -s 1344
      2⤵
      • Program crash
      PID:3492
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2052 -ip 2052
    1⤵
      PID:1032

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2052-0-0x0000000000860000-0x0000000000EEE000-memory.dmp

      Filesize

      6.6MB

    • memory/2052-1-0x0000000074F76000-0x0000000074F77000-memory.dmp

      Filesize

      4KB

    • memory/2052-2-0x0000000074F60000-0x0000000075050000-memory.dmp

      Filesize

      960KB

    • memory/2052-5-0x0000000000860000-0x0000000000EEE000-memory.dmp

      Filesize

      6.6MB

    • memory/2052-6-0x0000000000860000-0x0000000000EEE000-memory.dmp

      Filesize

      6.6MB

    • memory/2052-7-0x0000000005FB0000-0x0000000006556000-memory.dmp

      Filesize

      5.6MB

    • memory/2052-9-0x0000000000860000-0x0000000000EEE000-memory.dmp

      Filesize

      6.6MB

    • memory/2052-10-0x0000000005A70000-0x0000000005AD6000-memory.dmp

      Filesize

      408KB

    • memory/2052-11-0x0000000074F76000-0x0000000074F77000-memory.dmp

      Filesize

      4KB

    • memory/2052-13-0x0000000000860000-0x0000000000EEE000-memory.dmp

      Filesize

      6.6MB

    • memory/2052-14-0x0000000074F60000-0x0000000075050000-memory.dmp

      Filesize

      960KB