Overview

overview

10

Static

static

10

8d30a30ff9...89.exe

windows7-x64

10

8d30a30ff9...89.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    57s
  • max time network
    59s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/03/2025, 19:15

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General

  • Target

    8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe

  • Size

    74KB

  • MD5

    8426efde5119f38f7436dc6170635bae

  • SHA1

    1f68a03059e2b27b1b4529f906fe7336a743b2ac

  • SHA256

    8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689

  • SHA512

    8c1a0338f9b53657866eb5b8f2b1e9a736877ee599a38ad6c956eec2062a4b62501b03893b93d9995c062f8c90fb7901ebdf4b3a4ef2a3944629cd47f9df7e57

  • SSDEEP

    1536:Vu2/0TceH2or2NWvKnNzebe9p0fYtr1oJdoeZ5/EAH5tO:Vu2MTceH2oKEinNKbe9uY+SoltHTO

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

opakk.hopto.org:34397

Mutex

AkzHMC1tjq5U

Attributes
  • delay

    3

  • install

    true

  • install_file

    WUDFHost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
    "C:\Users\Admin\AppData\Local\Temp\8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WUDFHost" /tr '"C:\Users\Admin\AppData\Roaming\WUDFHost.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "WUDFHost" /tr '"C:\Users\Admin\AppData\Roaming\WUDFHost.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4268
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp61E6.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4092
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:392
      • C:\Users\Admin\AppData\Roaming\WUDFHost.exe
        "C:\Users\Admin\AppData\Roaming\WUDFHost.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp61E6.tmp.bat
    Filesize

    152B

    MD5

    45eb29ffd5f5d9252db4e8d85d26e62d

    SHA1

    33e7a97e7063a8aa80959383fdd4a9224c1992d5

    SHA256

    b9f6a6dfff449e73d50cbb372a53f0c93f45109a89cbed39782a03de09c5522f

    SHA512

    d1472c859adf37a667202275b9f8e303d2fb860d05472039ef5883ed666ff2e8812fbdf5d10277f1716b25c8a00c0bfeaf4c82d017752cf5a7696205bed90a70

    Download Submit

  • C:\Users\Admin\AppData\Roaming\WUDFHost.exe
    Filesize

    74KB

    MD5

    8426efde5119f38f7436dc6170635bae

    SHA1

    1f68a03059e2b27b1b4529f906fe7336a743b2ac

    SHA256

    8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689

    SHA512

    8c1a0338f9b53657866eb5b8f2b1e9a736877ee599a38ad6c956eec2062a4b62501b03893b93d9995c062f8c90fb7901ebdf4b3a4ef2a3944629cd47f9df7e57

    Download Submit

  • memory/2000-14-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2000-15-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4636-0-0x000000007490E000-0x000000007490F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4636-1-0x0000000000360000-0x0000000000378000-memory.dmp

    Filesize

    96KB

    Download

  • memory/4636-2-0x0000000074900000-0x00000000750B0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4636-3-0x0000000004CE0000-0x0000000004D46000-memory.dmp

    Filesize

    408KB

    Download

  • memory/4636-4-0x00000000051B0000-0x000000000524C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4636-10-0x0000000074900000-0x00000000750B0000-memory.dmp

    Filesize

    7.7MB

    Download