Overview

overview

10

Static

static

10

b41b657eb9...d2.exe

windows7-x64

10

b41b657eb9...d2.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    135s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-08-2024 06:59

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General

  • Target

    b41b657eb9883b9d2de872e7200d4fd2.exe

  • Size

    158KB

  • MD5

    b41b657eb9883b9d2de872e7200d4fd2

  • SHA1

    a9b102d7b76416bc4beaa2702e3b90206c323b66

  • SHA256

    a73f67009d77906b2dfee216b4e7cb940eef13304c22e909b65cd2834e291b1a

  • SHA512

    eb290a85597c934485887d7ccf21642042ceff82b052784543a55569af404b60fc9d42dcd42da027750d439a55a928705d4f9c1e40824e8f0b91d2e92110d73f

  • SSDEEP

    3072:5bzwH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfP6OO8Y:5bzwe0ODhTEPgnjuIJzo+PPcfP6B8

Score
10/10
arrowratclientcredential_accessdiscoverypersistenceratstealer

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

and-statements.gl.at.ply.gg:43442

Mutex

KRSSneMpK

Signatures

  • ArrowRat

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

    ratarrowrat
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\b41b657eb9883b9d2de872e7200d4fd2.exe
    "C:\Users\Admin\AppData\Local\Temp\b41b657eb9883b9d2de872e7200d4fd2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4940
    • 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:5080
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
      2⤵
        PID:408
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
        2⤵
        • System Location Discovery: System Language Discovery
        PID:2720
    • 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:3804
    • 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:5012

    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\AppCache133678331516059356.txt
      Filesize

      74KB

      MD5

      5d1edfca414b046fefb13e380148f4e6

      SHA1

      67043946770e46cdeb2fcb67e5fd92c30d9b31d2

      SHA256

      38a2d46768a4e4a3f10f9690a0bc92edbfd22ce5593d53d5f1b95c085930b388

      SHA512

      1d346ca77f2a2a59c7123e874d2d6d7df4ac8996a7d5c9c6b8b453091137fc3cbcd6f2cf3e3ea1c225fffa8cb5e9e9c5a4a07e149cbdcc1beea7ac35af556b35

      Download Submit

    • memory/2720-10-0x0000000006A50000-0x0000000006AA0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/2720-4-0x0000000005950000-0x00000000059E2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/2720-2-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

      Download

    • memory/2720-5-0x00000000059F0000-0x0000000005A8C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/2720-7-0x0000000006190000-0x00000000061F6000-memory.dmp

      Filesize

      408KB

      Download

    • memory/2720-6-0x0000000006250000-0x00000000067F4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4940-3-0x00007FFDECD80000-0x00007FFDED841000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4940-0-0x0000022B39BF0000-0x0000022B39C1E000-memory.dmp

      Filesize

      184KB

      Download

    • memory/4940-1-0x00007FFDECD83000-0x00007FFDECD85000-memory.dmp

      Filesize

      8KB

      Download

    • memory/4940-194-0x00007FFDECD80000-0x00007FFDED841000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/5012-17-0x0000026BDE360000-0x0000026BDE460000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/5012-20-0x00000273E0C80000-0x00000273E0CA0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5012-16-0x0000026BDE360000-0x0000026BDE460000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/5012-15-0x0000026BDE360000-0x0000026BDE460000-memory.dmp

      Filesize

      1024KB

      Download

    • memory/5012-42-0x00000273E0C40000-0x00000273E0C60000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5012-51-0x00000273E1050000-0x00000273E1070000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5080-13-0x0000000003320000-0x0000000003321000-memory.dmp

      Filesize

      4KB

      Download