Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • 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
    04-12-2024 19:45

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    62c773eed4a7de263644c82100af140d

  • SHA1

    7553a1b9b0d57f5f30b25c804e83dbb337952e05

  • SHA256

    81e13b9b5ea7654a76d957f74005f5ccb1932b1cc0a682b3bc9006b93fe8ee3f

  • SHA512

    4d8a8c5fb172c21a9c98f8384a7cb288f6c474cc24645c2c0cd3a8e8a7d733382f9a8c6603a3248589e347e944d15451a8938a39ed2d38e2a957d884e9bab2c6

  • SSDEEP

    3072:TbzcH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfP+OO8Y:Tbzce0ODhTEPgnjuIJzo+PPcfP+B8

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

skills-surely.gl.at.ply.gg:17909

Mutex

SyULoUzrw

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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 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:2324
    • 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 behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4820
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client skills-surely.gl.at.ply.gg 17909 SyULoUzrw
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3528
  • 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:5080
  • 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:3092

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\AppCache133778151661024695.txt
    Filesize

    74KB

    MD5

    3e19a0b9f05d95949e3e15d82d157419

    SHA1

    894d52df57d1e5c37a556d9f65b3788eba3b31df

    SHA256

    f3f12b401234bb3d32b714eac953e3e4d7ab9c5aea1ae2e1cbb7064ca91d3dfa

    SHA512

    f769f8927c795e52fdeb779abc8116e1d3e78d275de88fa9936a94f839153ce9c3a3bdc610ddfc9f0d086b83343f295b930a5b02026bc666835d62b6c8b9c061

    Download Submit

  • memory/2324-1-0x00000217BDEF0000-0x00000217BDF1E000-memory.dmp

    Filesize

    184KB

    Download

  • memory/2324-3-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2324-0-0x00007FFB476E3000-0x00007FFB476E5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2324-163-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2324-162-0x00007FFB476E3000-0x00007FFB476E5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3092-53-0x000001EFC80C0000-0x000001EFC80E0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3092-204-0x000001E7C5000000-0x000001E7C692F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/3092-192-0x000001E7C5000000-0x000001E7C692F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/3092-164-0x000001E7C5000000-0x000001E7C692F000-memory.dmp

    Filesize

    25.2MB

    Download

  • memory/3092-22-0x000001EFC7CF0000-0x000001EFC7D10000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3092-37-0x000001EFC7CB0000-0x000001EFC7CD0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/3528-4-0x0000000005420000-0x00000000054B2000-memory.dmp

    Filesize

    584KB

    Download

  • memory/3528-10-0x0000000005D50000-0x0000000005DA0000-memory.dmp

    Filesize

    320KB

    Download

  • memory/3528-7-0x0000000005C90000-0x0000000005CF6000-memory.dmp

    Filesize

    408KB

    Download

  • memory/3528-6-0x0000000005DD0000-0x0000000006374000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/3528-5-0x0000000005540000-0x00000000055DC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/3528-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download

  • memory/4820-16-0x00000000014B0000-0x00000000014B1000-memory.dmp

    Filesize

    4KB

    Download