Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2024 11:15

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    57a46b29c0f70d08631e1897e470bc3f

  • SHA1

    cc32dc5c181d9db744a0e31a4eec0afe019b5f45

  • SHA256

    4a3110951336086dc7a061fbb72ef774c8239c196b69ab77cd68e146892b73e1

  • SHA512

    c3c69f33f40584c91dd4dd41fbdca91515b51e7451379638aa24b782c097c3194c60ed74758b8dd21f7538d3542583bb9c081930c24cb1d1d29febb9b67d120e

  • SSDEEP

    3072:gbzHDH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPPSO8Y:gbzHDe0ODhTEPgnjuIJzo+PPcfPPN8

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

193.161.193.99:48038

Mutex

OcNKYpShH

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 27 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 22 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:2432
    • 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:208
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 193.161.193.99 48038 OcNKYpShH
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2604
  • 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:2040
  • 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:1420

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\AppCache133780437194761389.txt
    Filesize

    75KB

    MD5

    f06470aa193372640c2fdc3b8ac47e6a

    SHA1

    4122fe2e7ae62705cfceaf5b20087fcaf549edfd

    SHA256

    c3ecc97b8d754876487a65203be80d6869739390a96ca962faa6e319c8b7c66e

    SHA512

    e119d7258fd4bdcd7851c3497011fd3573d4eca7a6d978b1abeb6fbb6f429ede063fa71c6fa455a552012b90289917bd4add77549e385ee4d146b2b386bf3746

    Download Submit

  • memory/208-14-0x00000000025D0000-0x00000000025D1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1420-20-0x000001F3E2CC0000-0x000001F3E2CE0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/1420-33-0x000001F3E2C80000-0x000001F3E2CA0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/1420-51-0x000001FBE40A0000-0x000001FBE40C0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/1420-15-0x000001F3E1700000-0x000001F3E1800000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/1420-16-0x000001F3E1700000-0x000001F3E1800000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2432-1-0x000001E76C930000-0x000001E76C95E000-memory.dmp

    Filesize

    184KB

    Download

  • memory/2432-3-0x00007FFA4CE50000-0x00007FFA4D911000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2432-0-0x00007FFA4CE53000-0x00007FFA4CE55000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2432-168-0x00007FFA4CE50000-0x00007FFA4D911000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2432-167-0x00007FFA4CE53000-0x00007FFA4CE55000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2604-4-0x0000000005120000-0x00000000051B2000-memory.dmp

    Filesize

    584KB

    Download

  • memory/2604-10-0x0000000006190000-0x00000000061E0000-memory.dmp

    Filesize

    320KB

    Download

  • memory/2604-7-0x00000000058D0000-0x0000000005936000-memory.dmp

    Filesize

    408KB

    Download

  • memory/2604-6-0x0000000005950000-0x0000000005EF4000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/2604-5-0x00000000051C0000-0x000000000525C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/2604-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download