Overview

overview

10

Static

static

10

Microsoft_Service.exe

windows7-x64

10

Microsoft_Service.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    92s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-07-2024 04:40

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General

  • Target

    Microsoft_Service.exe

  • Size

    63KB

  • MD5

    1644c4839846a1b6524e38071528a564

  • SHA1

    2250bbb322087bf0ba0a26a83b0e11ce5da6733d

  • SHA256

    2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

  • SHA512

    06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98

  • SSDEEP

    1536:VYQj1F212+iqsUbDh9xrsGu1SdpqKmY7:KKM1DhsUbD9HGz

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

45.139.198.242:6606

Attributes
  • delay

    1

  • install

    true

  • install_file

    MicrosoftServices.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • 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).

  • 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 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\Microsoft_Service.exe
    "C:\Users\Admin\AppData\Local\Temp\Microsoft_Service.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:404
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2076
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4724
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB3EE.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1796
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3824
      • C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe
        "C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB3EE.tmp.bat
    Filesize

    161B

    MD5

    96c5f7add3c84698ccc3607dd039ba0f

    SHA1

    48f90a2ce8cfdddaec9c1a71f6278a9d1fbe82d6

    SHA256

    6d1488f225ebaab80608348b36a0212196d52f2498edcc94a076617926b49ce7

    SHA512

    d24d5d66cc7e39daf97e900dc32c81bfb0af4d825f29d4f0af1aaece79432f28380c7edca589af9f5a828d4dcd442be4450e1feb02657c36f74e19d1b5bda3d3

    Download Submit

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

    63KB

    MD5

    1644c4839846a1b6524e38071528a564

    SHA1

    2250bbb322087bf0ba0a26a83b0e11ce5da6733d

    SHA256

    2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

    SHA512

    06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98

    Download Submit

  • memory/404-0-0x0000000000740000-0x0000000000756000-memory.dmp

    Filesize

    88KB

    Download

  • memory/404-1-0x00007FFA34893000-0x00007FFA34895000-memory.dmp

    Filesize

    8KB

    Download

  • memory/404-2-0x00007FFA34890000-0x00007FFA35351000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/404-7-0x00007FFA34890000-0x00007FFA35351000-memory.dmp

    Filesize

    10.8MB

    Download