Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    135s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-05-2024 14:55

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    530f0cd9dd681beb9e1f941b4f065592

  • SHA1

    657a70a6fe8b704b3cb0bdf3a7bcc440d0bcb189

  • SHA256

    ec10e8325b6c955e29f74034691df96dc789407043b3b6a9e4117190d7e3372c

  • SHA512

    deeb66e0d8751f282f3a73494636d5ba8ccb8682c05ce441a33fa043859e74a5af4c7b3912e1ea53cebdf75b4206e68512a76c3436d502eaaa53f8cfdd4b472c

  • SSDEEP

    3072:gbzbDH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPSSO8Y:gbzbDe0ODhTEPgnjuIJzo+PPcfPSN8

Score
10/10
arrowratclientpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

192.168.56.1:1337

Mutex

ZTDIAGFVu

Signatures

  • ArrowRat

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

    ratarrowrat
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 2 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.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 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
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:64
    • 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:4564
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 192.168.56.1 1337 ZTDIAGFVu
      2⤵
        PID:3452
    • 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:2364
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1776

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133601721689319990.txt
      Filesize

      75KB

      MD5

      e7494073aeaffe7245802f28cd30054f

      SHA1

      092227bbf58c514ba5829345ec903b622cd2c636

      SHA256

      0792b6ce23ecab01dcc88e8fe286355f09b4fcc4708797a42574181a44ce1356

      SHA512

      4edeb6dae45dd79893541beb8343b469d7dfe876d2463ec1141dfd475831923443b45828b032ccc6faa36b9c735e4484ccce62f30b725ffee650e417dc3c39f7

      Download Submit

    • memory/64-1-0x00007FFCB8943000-0x00007FFCB8945000-memory.dmp

      Filesize

      8KB

      Download

    • memory/64-206-0x00007FFCB8940000-0x00007FFCB9401000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/64-3-0x00007FFCB8940000-0x00007FFCB9401000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/64-0-0x000002BBE4040000-0x000002BBE406E000-memory.dmp

      Filesize

      184KB

      Download

    • memory/1776-15-0x000001AA62DF0000-0x000001AA62EF0000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/1776-50-0x000001B265090000-0x000001B2650B0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1776-51-0x000001B2654E0000-0x000001B265500000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1776-20-0x000001B2650D0000-0x000001B2650F0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1776-16-0x000001AA62DF0000-0x000001AA62EF0000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/3452-4-0x0000000005360000-0x00000000053F2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/3452-10-0x0000000006460000-0x00000000064B0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/3452-7-0x0000000005BA0000-0x0000000005C06000-memory.dmp

      Filesize

      408KB

      Download

    • memory/3452-6-0x0000000005C20000-0x00000000061C4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/3452-5-0x00000000054A0000-0x000000000553C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/3452-2-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

      Download

    • memory/4564-13-0x0000000003740000-0x0000000003741000-memory.dmp

      Filesize

      4KB

      Download