Overview

overview

10

Static

static

10

3.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    137s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/12/2024, 14:16

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General

  • Target

    3.exe

  • Size

    63KB

  • MD5

    33ea3434e9a9801f718c7b652166013c

  • SHA1

    24f9421b607361865c05f1b5ce4e1e75ce89e064

  • SHA256

    0a393957e15c85531debe65786b7758d1102f9f352223dd300703917f3161536

  • SHA512

    3dd4fdb8e50d27f5a65d0ef2e28f393fadc41a3099ed0e9e293b8b2b8c0c34875abb8ad03a62d9ac975594505537ea24b64f509a252af6e9c4daf374c3a091d2

  • SSDEEP

    1536:fJxFz3FI8Cwof4wJK7bkyyiNuGbb9wmsRIGBZVclN:fJxFz3FI8Cwo7JK7bky/AGbb96JzY

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

fojeweb571-59953.portmap.host:59953

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    windows defender firewall.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).

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    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 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 45 IoCs
  • Suspicious use of SendNotifyMessage 44 IoCs
  • Suspicious use of WriteProcessMemory 10 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\3.exe
    "C:\Users\Admin\AppData\Local\Temp\3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4380
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4860
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA6B0.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4912
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3496
      • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
        "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:464
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /0
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4508

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpA6B0.tmp.bat
          Filesize

          169B

          MD5

          77d910225b2482a362d707817e719c9d

          SHA1

          3db8e09026ca8b87ae5a662578039173de0d1815

          SHA256

          26599f79c120be3e5f387160e845f9dd7693e4f1140d4afdc74e7025a32449ff

          SHA512

          2870a9c50907f8c57089a400d7a9b3d63afd7a9df725e3738d45d1478f57bf4aa66370e56dd5729a60a0910e3e9cdd862219bf966f6992996615810d1dc32535

          Download Submit

        • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
          Filesize

          63KB

          MD5

          33ea3434e9a9801f718c7b652166013c

          SHA1

          24f9421b607361865c05f1b5ce4e1e75ce89e064

          SHA256

          0a393957e15c85531debe65786b7758d1102f9f352223dd300703917f3161536

          SHA512

          3dd4fdb8e50d27f5a65d0ef2e28f393fadc41a3099ed0e9e293b8b2b8c0c34875abb8ad03a62d9ac975594505537ea24b64f509a252af6e9c4daf374c3a091d2

          Download Submit

        • memory/4380-0-0x00007FFCE9D23000-0x00007FFCE9D25000-memory.dmp

          Filesize

          8KB

          Download

        • memory/4380-1-0x0000000000EC0000-0x0000000000ED6000-memory.dmp

          Filesize

          88KB

          Download

        • memory/4380-2-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4380-7-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4380-8-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4508-14-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-13-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-15-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-24-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-23-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-22-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-21-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-20-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-19-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download

        • memory/4508-25-0x000001B5B1260000-0x000001B5B1261000-memory.dmp

          Filesize

          4KB

          Download