Overview

overview

10

Static

static

10

8573d9e75f...cb.exe

windows10-2004-x64

10

8573d9e75f...cb.exe

windows10-ltsc_2021-x64

10

8573d9e75f...cb.exe

windows11-21h2-x64

10

Resubmissions

02/12/2025, 07:23

251202-h79emsslej10

15/08/2022, 18:46

220815-xemgqshcc98

Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20251017-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20251017-enlocale:en-usos:windows10-ltsc_2021-x64system
  • submitted
    02/12/2025, 07:23

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    8573d9e75f2c0ef4e69023fc07bee9cb.exe
  • Size 91KB
  • Sample251202-h79emsslej
  • SHA256 e5d590f782337416fe7f93aa7f488419f86802500d05ef2fced4ccca7f4e14ae
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
tydiscoveryarrowratpersistenceransomwarerat

Malware Config

Extracted

Family

  • arrowrat

Botnet

  • TY

C2

  • 91.134.207.23:5337

Mutex

  • DFDFrcvff45thfgh4t44gjahdfhhhhca

Signatures

  • ArrowRat

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

    ratarrowrat
  • Arrowrat family
    arrowrat
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    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
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 19 IoCs
  • Suspicious use of FindShellTrayWindow 56 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 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\8573d9e75f2c0ef4e69023fc07bee9cb.exe
    "C:\Users\Admin\AppData\Local\Temp\8573d9e75f2c0ef4e69023fc07bee9cb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4560
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1232
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" TY 91.134.207.23 5337 DFDFrcvff45thfgh4t44gjahdfhhhhca
      2⤵
        PID:3280
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" TY 91.134.207.23 5337 DFDFrcvff45thfgh4t44gjahdfhhhhca
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2444
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:440
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1860

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Microsoft_AutoGenerated_{2F519BF2-C697-59F8-8F6A-1E19509CE66B}
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\Microsoft_AutoGenerated_{2F519BF2-C697-59F8-8F6A-1E19509CE66B}
          • Size 36KB
          • SHA256 813c66ce7dec4cff9c55fb6f809eab909421e37f69ff30e4acaa502365a32bd1
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          {1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}_charmap_exe
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\{1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}_charmap_exe
          • Size 36KB
          • SHA256 e0a9f5c75706dc79a44d0c890c841b2b0b25af4ee60d0a16a7356b067210038e
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          memory/1232-6-0x0000000000D50000-0x0000000000D51000-memory.dmp
          Download

          memory/1860-40-0x000002E278620000-0x000002E278640000-memory.dmp
          Download

          memory/1860-8-0x000002E275D00000-0x000002E275E00000-memory.dmp
          Download

          memory/1860-22-0x000002E276FE0000-0x000002E277000000-memory.dmp
          Download

          memory/1860-41-0x000002E278600000-0x000002E278620000-memory.dmp
          Download

          memory/1860-55-0x000002E27B7D0000-0x000002E27B8D0000-memory.dmp
          Download

          memory/1860-109-0x000002E27B4F0000-0x000002E27B5F0000-memory.dmp
          Download

          memory/2444-5-0x00000000051F0000-0x0000000005282000-memory.dmp
          Download

          memory/2444-3-0x0000000000400000-0x0000000000410000-memory.dmp
          Download

          memory/4560-0-0x0000000000D90000-0x0000000000DAE000-memory.dmp
          Download

          memory/4560-2-0x0000000005880000-0x000000000591C000-memory.dmp
          Download

          memory/4560-1-0x0000000005C90000-0x0000000006236000-memory.dmp
          Download