Analysis

  • max time kernel
    147s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-05-2023 12:31

General

  • Target

    arrow/150c06bc4cba9064302fb96f2b3565f433b43847b6d59448ce15b9024e6c9b0a.exe

  • Size

    138KB

  • MD5

    a771f2894d94322a49b0ce2e14493a3e

  • SHA1

    63cd63601410fe6be499a9102cbbd6c675e72f56

  • SHA256

    150c06bc4cba9064302fb96f2b3565f433b43847b6d59448ce15b9024e6c9b0a

  • SHA512

    ab75a88fbc2a8fd5320fdddb525af9a70c3553fa33b967545d4491a0ecd2e24869caeea49fdd7324d4ed666c42b8f5444c474056dddda0746af135bb97478765

  • SSDEEP

    3072:6bvA5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/Yd:6bv4S7BqjjYHdrqkL/

Malware Config

Extracted

Family

arrowrat

Botnet

AG35PW

C2

androidmedallo.duckdns.org:1338

Mutex

ZD2651

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 21 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\arrow\150c06bc4cba9064302fb96f2b3565f433b43847b6d59448ce15b9024e6c9b0a.exe
    "C:\Users\Admin\AppData\Local\Temp\arrow\150c06bc4cba9064302fb96f2b3565f433b43847b6d59448ce15b9024e6c9b0a.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2580
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" AG35PW androidmedallo.duckdns.org 1338 ZD2651
      2⤵
        PID:804
      • 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:3868
    • 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:4288
    • 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:3836

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133277297551854914.txt
      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

    • memory/804-144-0x00000000061B0000-0x0000000006200000-memory.dmp
      Filesize

      320KB

    • memory/804-137-0x0000000005110000-0x00000000051A2000-memory.dmp
      Filesize

      584KB

    • memory/804-138-0x00000000051B0000-0x000000000524C000-memory.dmp
      Filesize

      624KB

    • memory/804-139-0x00000000059B0000-0x0000000005F54000-memory.dmp
      Filesize

      5.6MB

    • memory/804-140-0x0000000005930000-0x0000000005996000-memory.dmp
      Filesize

      408KB

    • memory/804-143-0x00000000052F0000-0x0000000005300000-memory.dmp
      Filesize

      64KB

    • memory/804-134-0x0000000000400000-0x0000000000416000-memory.dmp
      Filesize

      88KB

    • memory/804-275-0x00000000052F0000-0x0000000005300000-memory.dmp
      Filesize

      64KB

    • memory/2580-133-0x0000022D03130000-0x0000022D03158000-memory.dmp
      Filesize

      160KB

    • memory/3836-154-0x000001DFF40F0000-0x000001DFF4110000-memory.dmp
      Filesize

      128KB

    • memory/3836-157-0x000001DFF40B0000-0x000001DFF40D0000-memory.dmp
      Filesize

      128KB

    • memory/3836-161-0x000001DFF44C0000-0x000001DFF44E0000-memory.dmp
      Filesize

      128KB

    • memory/3868-148-0x00000000033A0000-0x00000000033A1000-memory.dmp
      Filesize

      4KB