Overview

overview

10

Static

static

10

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    92s
  • max time network
    146s
  • 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, 07:11

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General

  • Target

    2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.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 22 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\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
    "C:\Users\Admin\AppData\Local\Temp\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4852
    • 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:4356
      • 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:3144
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA604.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:868
      • C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe
        "C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1584

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpA604.tmp.bat
          Filesize

          161B

          MD5

          2a9512d0350670bc9bc2f029eba4d694

          SHA1

          8cb7a3426a7e704ac0291c3ce63469e2da08c8ba

          SHA256

          56dc345b4dabd63a91f544b070a4a8966b29bf57241ba1ea3ca4ff49b0458159

          SHA512

          085a7ccc15a6ffcc2d290b7dfa103bb8c99d76616b5d1d59cfd376995a03b4e22a1d6d290a1b33bf859f08b6992812d3968d967fe23d742e3c6802d5ff68266e

          Download Submit

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

          63KB

          MD5

          1644c4839846a1b6524e38071528a564

          SHA1

          2250bbb322087bf0ba0a26a83b0e11ce5da6733d

          SHA256

          2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

          SHA512

          06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98

          Download Submit

        • memory/4852-1-0x00007FFFEFD73000-0x00007FFFEFD75000-memory.dmp

          Filesize

          8KB

          Download

        • memory/4852-0-0x0000000000820000-0x0000000000836000-memory.dmp

          Filesize

          88KB

          Download

        • memory/4852-2-0x00007FFFEFD70000-0x00007FFFF0831000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4852-7-0x00007FFFEFD70000-0x00007FFFF0831000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4852-8-0x00007FFFEFD70000-0x00007FFFF0831000-memory.dmp

          Filesize

          10.8MB

          Download