Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 01:38

General

  • Target

    9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe

  • Size

    47KB

  • MD5

    6d13d147a209e3be044035f0c03b7bde

  • SHA1

    1eb5fb487ea7742ff1766ca5bf1b7191cfcf6283

  • SHA256

    9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548

  • SHA512

    a159d09265fa833afddce5fe7fab6d4be0fc37fd4c2e0d1a15851427764ad3c068249ba28d000a076209d017cb65e4320752ac7a3a0314239d836f1e15ae39a9

  • SSDEEP

    768:IuyxNTAoZjRWUJd9bmo2qL2TJ4+3Qk8sna9lzPIaj9vtqb5HTKsvWy0oKCnX5Eev:IuyxNTAGL2Mk839lcaj9vIbJWsZoWFnt

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

94.232.249.111:6606

94.232.249.111:7707

94.232.249.111:8808

Mutex

o6tEeoRxJb0n

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Detects file containing reversed ASEP Autorun registry keys 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe
    "C:\Users\Admin\AppData\Local\Temp\9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2752
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp88A0.tmp.bat""
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2348
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2804
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp88A0.tmp.bat

    Filesize

    151B

    MD5

    a7f98df4d007e31e49d2ecea38fdea11

    SHA1

    70d1c881f11f8594dab5fd92260313680fa369f8

    SHA256

    7653a78c617b41e6e647212e53f7ea48ce6a0ca3532ab0630007e5dd869d0191

    SHA512

    72e48456ec1d3cd41b0c11c28d20ef62e1129b63efbdc6aad7e70a8a514f8e072e0990832d46c92917ca92dfd95b1a2085fdb77e71a8fb676812ed087de963ad

  • \Users\Admin\AppData\Roaming\svchost.exe

    Filesize

    47KB

    MD5

    6d13d147a209e3be044035f0c03b7bde

    SHA1

    1eb5fb487ea7742ff1766ca5bf1b7191cfcf6283

    SHA256

    9c457b1cd061ae951fbed7841149b247e085befa6e2c5170058ce35cdebce548

    SHA512

    a159d09265fa833afddce5fe7fab6d4be0fc37fd4c2e0d1a15851427764ad3c068249ba28d000a076209d017cb65e4320752ac7a3a0314239d836f1e15ae39a9

  • memory/2160-0-0x000000007451E000-0x000000007451F000-memory.dmp

    Filesize

    4KB

  • memory/2160-1-0x00000000003D0000-0x00000000003E2000-memory.dmp

    Filesize

    72KB

  • memory/2160-2-0x0000000074510000-0x0000000074BFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2160-11-0x0000000074510000-0x0000000074BFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2784-16-0x0000000001150000-0x0000000001162000-memory.dmp

    Filesize

    72KB