Overview

overview

10

Static

static

10

040cef4a91...51.exe

windows7-x64

10

040cef4a91...51.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    158s
  • 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 16:42

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General

  • Target

    040cef4a919bf259e750029187dcfeff8b4b8f18e6a65cb401ee941d7999dd51.exe

  • Size

    158KB

  • MD5

    d89a424f932b8a69a4657e7ec09944da

  • SHA1

    7e1b1c99d1bc8fdbc8173ca9eda77dd2f4fd287c

  • SHA256

    040cef4a919bf259e750029187dcfeff8b4b8f18e6a65cb401ee941d7999dd51

  • SHA512

    459d3531c2f72637c99cd484f555a558f3aafc8e1d967e2333470863310d34fdfae8f0da3a7f20672e9040aaf2b2be3b3d6195dc6aaf0b9a53d28a40aa4282fe

  • SSDEEP

    3072:qbz+H+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPoKO8Y:qbz+e0ODhTEPgnjuIJzo+PPcfPo18

Score
10/10
arrowratclientdiscoverypersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

147.185.221.17:55141

Mutex

YnZwwlrYv

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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 13 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\040cef4a919bf259e750029187dcfeff8b4b8f18e6a65cb401ee941d7999dd51.exe
    "C:\Users\Admin\AppData\Local\Temp\040cef4a919bf259e750029187dcfeff8b4b8f18e6a65cb401ee941d7999dd51.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1528
    • 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:2340
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 147.185.221.17 55141 YnZwwlrYv
      2⤵
        PID:2188
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 147.185.221.17 55141 YnZwwlrYv
        2⤵
        • System Location Discovery: System Language Discovery
        PID:4576
    • 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:4064
    • 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:4312

    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\AppCache133716697609677873.txt
      Filesize

      75KB

      MD5

      8a1e7516d3b8d197bbe246f617331c84

      SHA1

      adbbfdaf25eac31328a91a90d5fd051bc99ecfa0

      SHA256

      bb9c45a1bc401954db02023e6620bdd8018e6dd6d401df089ed3386a4fcafea8

      SHA512

      eb1dac9e6da1a5411c20c789740bdf703403c2b696804dc647ab7eea84d7c531b3afa9498144fc98143ffac6eb82ee10a7925f4b570009ee530596cee4e7b17c

      Download Submit

    • memory/1528-1-0x000001F744720000-0x000001F74474E000-memory.dmp

      Filesize

      184KB

      Download

    • memory/1528-0-0x00007FFC19373000-0x00007FFC19375000-memory.dmp

      Filesize

      8KB

      Download

    • memory/2340-13-0x0000000003130000-0x0000000003131000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4312-15-0x000001F15C400000-0x000001F15C500000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/4312-27-0x000001F15D2E0000-0x000001F15D300000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4312-20-0x000001F15D320000-0x000001F15D340000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4312-38-0x000001F15D900000-0x000001F15D920000-memory.dmp

      Filesize

      128KB

      Download

    • memory/4312-16-0x000001F15C400000-0x000001F15C500000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/4576-4-0x0000000002B60000-0x0000000002BF2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4576-10-0x0000000006080000-0x00000000060D0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4576-7-0x00000000057D0000-0x0000000005836000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4576-6-0x0000000005A80000-0x0000000006024000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4576-5-0x00000000050A0000-0x000000000513C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4576-2-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

      Download