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Overview

overview

10

Static

static

10

f5efd1b435...63.exe

windows7-x64

10

f5efd1b435...63.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/06/2024, 01:20

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General

  • Target

    f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263.exe

  • Size

    48KB

  • MD5

    36b7614f2f6b0788e6c2be5def44c68f

  • SHA1

    0aca41d981fbc11d8eee8d7c668fc68637b4985c

  • SHA256

    f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263

  • SHA512

    b1243336e444127b0931c9cc5ce7e364540dd1fba1d25e9b7384e6d1d6d68036d7ea46b2c56592c20891d2d085af319286eda4eef57c1056bed97abdcb1d2449

  • SSDEEP

    768:AukzVT0kLd3WULgPdVmo2qDnJTTb2cWss3kPIDeR+0b01D1wKgHEujzhrNYNKBDq:AukzVT0Mq12qJnHDyJDeRxb0nngkuprw

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

61.14.233.130:6606

61.14.233.130:7707

61.14.233.130:8808
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Sysbin.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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263.exe
    "C:\Users\Admin\AppData\Local\Temp\f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4084
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Sysbin" /tr '"C:\Users\Admin\AppData\Roaming\Sysbin.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Sysbin" /tr '"C:\Users\Admin\AppData\Roaming\Sysbin.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:1036
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4594.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3504
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3216
      • C:\Users\Admin\AppData\Roaming\Sysbin.exe
        "C:\Users\Admin\AppData\Roaming\Sysbin.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp4594.tmp.bat
    Filesize

    150B

    MD5

    6a93f4469c686a70942408121361e3cb

    SHA1

    ff13fafce97f1eb117a5766da2165777103c5a88

    SHA256

    70e72533f0203c2bd5f5ee4b0f3ae6f5c15ee36a16fb8725d22dd791b2464fc1

    SHA512

    5a41e1d23df1656b1bd3080658af5fd57d8b60d7546a6dc3127036cd3aa6f6e87c927a388a8f8ff3dfc6e67c01720f57ab5214ac529f011bccb039a71190c030

    Download Submit

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

    48KB

    MD5

    36b7614f2f6b0788e6c2be5def44c68f

    SHA1

    0aca41d981fbc11d8eee8d7c668fc68637b4985c

    SHA256

    f5efd1b435706c4eb87582528b1f34825765cc5324f768a93d763b31642f8263

    SHA512

    b1243336e444127b0931c9cc5ce7e364540dd1fba1d25e9b7384e6d1d6d68036d7ea46b2c56592c20891d2d085af319286eda4eef57c1056bed97abdcb1d2449

    Download Submit

  • memory/3096-13-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3096-14-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4084-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4084-1-0x0000000000A20000-0x0000000000A32000-memory.dmp

    Filesize

    72KB

    Download

  • memory/4084-2-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4084-3-0x0000000005470000-0x000000000550C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4084-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

    Download