Overview

overview

10

Static

static

10

client.bin.exe

windows7-x64

10

client.bin.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/10/2022, 06:32

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General

  • Target
    client.bin.exe
  • Size 144KB
  • Sample221021-halx3sfffl
  • SHA256 9160b90fa4a6a9cf22f943dba92cec64e2dc03c2317b5d9ab50a753fc410ce43
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
arrowratasyncrat%group%persistencerat

Malware Config

Extracted

Family

  • arrowrat

Botnet

  • %Group%

C2

  • %Hosts%:%Ports%

Mutex

  • %MTX%

Signatures

  • ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

    ratarrowrat
  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 22 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\client.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\client.bin.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3176
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" %Group% %Hosts% %Ports% %MTX%
      2⤵
        PID:2788
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" %Group% %Hosts% %Ports% %MTX%
        2⤵
          PID:4660
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:116
      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
        1⤵
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:3444

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/1968-136-0x0000018232BC0000-0x0000018232BEA000-memory.dmp
            Download

            memory/1968-135-0x00007FFCEED30000-0x00007FFCEF7F1000-memory.dmp
            Download

            memory/1968-140-0x00007FFCEED30000-0x00007FFCEF7F1000-memory.dmp
            Download

            memory/3444-169-0x000002A09ADA0000-0x000002A09ADC0000-memory.dmp
            Download

            memory/3444-228-0x000002A09D5B8000-0x000002A09D5BB000-memory.dmp
            Download

            memory/3444-229-0x000002A09D5B8000-0x000002A09D5BB000-memory.dmp
            Download

            memory/3444-227-0x000002A09D5B8000-0x000002A09D5BB000-memory.dmp
            Download

            memory/3444-226-0x000002A09D5B8000-0x000002A09D5BB000-memory.dmp
            Download

            memory/3444-152-0x000002A09D510000-0x000002A09D530000-memory.dmp
            Download

            memory/3444-153-0x000002A0AD5B0000-0x000002A0AD6B0000-memory.dmp
            Download

            memory/3444-157-0x000002A09ADC0000-0x000002A09ADE0000-memory.dmp
            Download

            memory/4660-143-0x0000000005D60000-0x0000000006304000-memory.dmp
            Download

            memory/4660-142-0x0000000005410000-0x00000000054AC000-memory.dmp
            Download

            memory/4660-141-0x0000000005370000-0x0000000005402000-memory.dmp
            Download

            memory/4660-138-0x0000000000400000-0x0000000000410000-memory.dmp
            Download