Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2025, 04:56

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    a413b202d9cb6afd42608d30d2f0257c

  • SHA1

    63984f92d8d9ba7a4e78094cf1283e296beb3a57

  • SHA256

    94e424eb08567f890a6136f9018d8255d509cf583c7551b56a4e51ce295f48de

  • SHA512

    5e7dab0f4cdf7ed397e3e9d134265cac13cd3746daf62376ec92a96dc32c3dbc36afc84fa173dd6df017fd98b78186691fae4f2c0468de7f0ba1cab4df805f34

  • SSDEEP

    3072:rbzyH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPjRO8Y:rbzye0ODhTEPgnjuIJzo+PPcfPjc8

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

understanding-described.gl.at.ply.gg:3953

Mutex

ylYRZGgFZ

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 1 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 Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 29 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 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:1276
    • 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:1152
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client understanding-described.gl.at.ply.gg 3953 ylYRZGgFZ
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4924
  • 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:4216
  • 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:4660

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\AppCache133826134022711331.txt
    Filesize

    74KB

    MD5

    50c66a94d49fe68a6939208e909ccce1

    SHA1

    1633f9d210d401dccbf72851efd24019a1673404

    SHA256

    81c63529282406965a1da39876747df5471a0994a8dd92209e4c58d81c12b579

    SHA512

    aff55ac92388dc3dac4f93e60627793ba5e294084964b0c41ac4a1cb7c40b23385a10844fa831b1ecacec1c0bc398e739f881a60365650e587f4e051ce4640b1

    Download Submit

  • memory/1152-13-0x0000000002560000-0x0000000002561000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1276-3-0x00007FF940710000-0x00007FF9411D1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1276-0-0x00007FF940713000-0x00007FF940715000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1276-161-0x00007FF940710000-0x00007FF9411D1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1276-160-0x00007FF940713000-0x00007FF940715000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1276-1-0x00000206EC520000-0x00000206EC54E000-memory.dmp

    Filesize

    184KB

    Download

  • memory/4660-33-0x0000021CA9D70000-0x0000021CA9D90000-memory.dmp

    Filesize

    128KB

    Download

  • memory/4660-51-0x0000021CAA380000-0x0000021CAA3A0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/4660-15-0x0000021CA9000000-0x0000021CA9100000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4660-16-0x0000021CA9000000-0x0000021CA9100000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4660-17-0x0000021CA9000000-0x0000021CA9100000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4660-20-0x0000021CA9DB0000-0x0000021CA9DD0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/4924-4-0x0000000004940000-0x00000000049D2000-memory.dmp

    Filesize

    584KB

    Download

  • memory/4924-10-0x0000000005AA0000-0x0000000005AF0000-memory.dmp

    Filesize

    320KB

    Download

  • memory/4924-7-0x00000000051B0000-0x0000000005216000-memory.dmp

    Filesize

    408KB

    Download

  • memory/4924-6-0x00000000052F0000-0x0000000005894000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/4924-5-0x0000000004A40000-0x0000000004ADC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4924-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download