Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    155s
  • 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 11:13

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    8e5fd3ee0899fc9a9e6e1993d691f716

  • SHA1

    aba5b08e33095a5ddb68724ebf87387f885e9e23

  • SHA256

    b1bfae1daeb208604bf823a4e5e26092c6d7abdf3b1b7e702480ecbaccf76c7f

  • SHA512

    f2e46d47fd90405d1135f942d8db095d7a72f33c055d5be8e6ed92ec456cf93d855e62f32098cff29adb3e301f73be437ee4c1dd2f43476cc7e4c49aa276dad8

  • SSDEEP

    3072:5bzsH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfP5OO8Y:5bzse0ODhTEPgnjuIJzo+PPcfP5B8

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

geomapgg-48038.portmap.host:14679

Mutex

YgwnMAThk

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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 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:1516
    • 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:1876
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client geomapgg-48038.portmap.host 14679 YgwnMAThk
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1212
  • 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:4820
  • 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:3176

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\AppCache133780436059592317.txt
    Filesize

    75KB

    MD5

    c493f529ed27379c6ce22b1d220ab1fb

    SHA1

    2622ff9bbdd4a0e6157f7eb0c19507a2cfda8ef4

    SHA256

    f4c11dda21a217f9b4ef4d6ff6bd96aa8b054dfb49f1be0bfcb931af354a870a

    SHA512

    c69de6a9c660ba59c8fe9b4e40eebad0064354972d40a30e0da5662d27aac833ef1ed7b2b55be0ef882825c9f026ad87ab84544ccce13d4f61099c5e081770cc

    Download Submit

  • memory/1212-7-0x0000000006050000-0x00000000060B6000-memory.dmp

    Filesize

    408KB

    Download

  • memory/1212-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download

  • memory/1212-10-0x0000000006120000-0x0000000006170000-memory.dmp

    Filesize

    320KB

    Download

  • memory/1212-4-0x00000000057D0000-0x0000000005862000-memory.dmp

    Filesize

    584KB

    Download

  • memory/1212-5-0x0000000005910000-0x00000000059AC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/1212-6-0x0000000006190000-0x0000000006734000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/1516-168-0x00007FFC0E973000-0x00007FFC0E975000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1516-3-0x00007FFC0E970000-0x00007FFC0F431000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1516-1-0x0000025A782E0000-0x0000025A7830E000-memory.dmp

    Filesize

    184KB

    Download

  • memory/1516-169-0x00007FFC0E970000-0x00007FFC0F431000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1516-0-0x00007FFC0E973000-0x00007FFC0E975000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1876-14-0x0000000003520000-0x0000000003521000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3176-15-0x00000177EE700000-0x00000177EE800000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/3176-16-0x00000177EE700000-0x00000177EE800000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/3176-20-0x0000017FF2000000-0x0000017FF2020000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3176-51-0x0000017FF23D0000-0x0000017FF23F0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3176-33-0x0000017FF1FC0000-0x0000017FF1FE0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3176-197-0x00000177F0000000-0x00000177F192F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/3176-212-0x00000177F0000000-0x00000177F192F000-memory.dmp

    Filesize

    25.2MB

    Download