Overview

overview

10

Static

static

10

b766c8001c...02.exe

windows7-x64

10

b766c8001c...02.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    137s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-09-2024 11:28

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General

  • Target

    b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe

  • Size

    138KB

  • MD5

    6787bc47fb117dd9ee565060bf696218

  • SHA1

    e11600ca6afb97abbb9c42f1ded0d6afc6daef12

  • SHA256

    b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402

  • SHA512

    506c26e3803d30983b8b4e925d5e78e3e27c953d708d5f1fbdbf79a0d2a23d2c299e7021e33c2feccba1de57e1de9ac1b3c6ad5e89bd0e67fdf617ad509105f4

  • SSDEEP

    3072:qbvc5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/YS:qbvUS7BqjjYHdrqkL/

Score
10/10
arrowratvenomhvncdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

VenomHVNC

C2

84.17.59.86:10018

Mutex

IDgbBCwxP

Signatures

  • ArrowRat

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

    ratarrowrat
  • 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 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 2 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\b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
    "C:\Users\Admin\AppData\Local\Temp\b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1900
    • 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:3728
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4452
  • 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:4524
  • 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:4172
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1012,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=1408 /prefetch:8
    1⤵
      PID:1948

    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\AppCache133716508981540334.txt
      Filesize

      76KB

      MD5

      91cf48bbcf8e85b496abd5bfd7af310c

      SHA1

      f4fc7dc8d9e8ad95d88e0669160cf7d01ed280f3

      SHA256

      1430fa10877a6340c5be6f4a0c7fdb593d3fa9986426889faf698d0bdd1d2a63

      SHA512

      fa2dcc642fef90997eeeffff07acb248210e7c4a0ab793c6fe3bdc5e1a3d21e13c774dbaa2440befc87120bf6d6b9a74ea9d31f941f64864fd684368045535cb

      Download Submit

    • memory/1900-0-0x00007FFD01A53000-0x00007FFD01A55000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1900-1-0x000002B0B5090000-0x000002B0B50B8000-memory.dmp

      Filesize

      160KB

      Download

    • memory/3728-13-0x0000000002D10000-0x0000000002D11000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4172-50-0x000001BCA9CB0000-0x000001BCA9CD0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4172-35-0x000001BCA98A0000-0x000001BCA98C0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4172-20-0x000001BCA98E0000-0x000001BCA9900000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4452-4-0x0000000005310000-0x00000000053A2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4452-10-0x0000000006360000-0x00000000063B0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4452-7-0x00000000061A0000-0x0000000006206000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4452-6-0x0000000005BF0000-0x0000000006194000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4452-5-0x00000000053B0000-0x000000000544C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4452-2-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

      Download