Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Client.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    147s
  • 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
    14-12-2024 20:51

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General

  • Target

    Client.exe

  • Size

    63KB

  • MD5

    4ae421ab5dc26aad7211a5bcc6ae89f2

  • SHA1

    90f1c09a58087d15688db7bf63ae889d8b453751

  • SHA256

    884eacb6f51be1e6eba1296aece06baccd3f600f258494fef2dfcc34fd257ccd

  • SHA512

    0b9689d6718749b03a38d3f681cb62f70eb96438a24ad0ca0177ffa53c70bebe8bc3e28ef46df5165baaf11a876df3fe27f5ece785f748ac2b467d79a51eb1c2

  • SSDEEP

    768:a2C46poI3iPgqUi79JKWcXveeObMbNCl1+6SCv7mqb2nIpwH1oV7Go8GdZVc6KN:aEIo5neeiMl8GbbXwZGdZVclN

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

127.0.0.1:54817
Mutex

roaroaroaraoroaroaraoraoraoarororrohrorororoaroaaoaoaoaroaroar

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 2 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:376
    • 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:4224
      • 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:664
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA3E1.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2132
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2192
      • 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:864
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1824
    • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
      "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2328

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpA3E1.tmp.bat
      Filesize

      169B

      MD5

      9fdfef171d326bf653b5d5908c47d09d

      SHA1

      031dc206c2f83c0f28357ab54be38f5f76e22db5

      SHA256

      8e19b0dee309b2524702d37b28022a581de6866f05c542c00fabb0260586bf62

      SHA512

      a1a62a4d139bf1ff23a63525484ba1e085844753d610027dce709b8f8bc15c46d577813ceeafe0a9e697ba17a7653045d9ec448d916dc7baf0ec9e6e542e05ad

      Download Submit

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

      63KB

      MD5

      4ae421ab5dc26aad7211a5bcc6ae89f2

      SHA1

      90f1c09a58087d15688db7bf63ae889d8b453751

      SHA256

      884eacb6f51be1e6eba1296aece06baccd3f600f258494fef2dfcc34fd257ccd

      SHA512

      0b9689d6718749b03a38d3f681cb62f70eb96438a24ad0ca0177ffa53c70bebe8bc3e28ef46df5165baaf11a876df3fe27f5ece785f748ac2b467d79a51eb1c2

      Download Submit

    • memory/376-0-0x00007FFBB54C3000-0x00007FFBB54C5000-memory.dmp

      Filesize

      8KB

      Download

    • memory/376-1-0x0000000000FB0000-0x0000000000FC6000-memory.dmp

      Filesize

      88KB

      Download

    • memory/376-2-0x00007FFBB54C0000-0x00007FFBB5F81000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/376-7-0x00007FFBB54C0000-0x00007FFBB5F81000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/376-8-0x00007FFBB54C0000-0x00007FFBB5F81000-memory.dmp

      Filesize

      10.8MB

      Download