Overview

overview

10

Static

static

10

bDCK.exe

windows7-x64

10

bDCK.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    148s
  • 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 23:36

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General

  • Target

    bDCK.exe

  • Size

    138KB

  • MD5

    e22c97f1931fdec29962ae778c5b44c3

  • SHA1

    7b0587f698a12619a735ce2536ec6a298ac92874

  • SHA256

    2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c

  • SHA512

    6f65b90401c650f66e22fb65c176edf73c09ef0bc0a34f7ee761fb984032e975cc3835dcdb22bc3d62c99678ad7a03b0fcbeb8dd679728ce49d035763c49c309

  • SSDEEP

    3072:2bvt5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/Y0:2bv7S7BqjjYHdrqkL/

Score
10/10
arrowraty905dcpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Y905DC

C2

windowsii.duckdns.org:1338

Mutex

QTZ3XG

Signatures

  • ArrowRat

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

    ratarrowrat
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • 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\bDCK.exe
    "C:\Users\Admin\AppData\Local\Temp\bDCK.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG
      2⤵
        PID:4952
      • 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:5024
    • 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:1776
    • 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:3616

    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\AppCache133225365852668438.txt
      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

      Download Submit

    • memory/3616-153-0x0000028046540000-0x0000028046560000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3616-159-0x0000028046900000-0x0000028046920000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3616-156-0x0000028046500000-0x0000028046520000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3728-133-0x000001D219AC0000-0x000001D219AE8000-memory.dmp

      Filesize

      160KB

      Download

    • memory/4952-137-0x0000000005800000-0x000000000589C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4952-140-0x0000000005F50000-0x0000000005FB6000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4952-143-0x0000000006810000-0x0000000006860000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4952-139-0x0000000005710000-0x0000000005720000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4952-138-0x0000000006010000-0x00000000065B4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4952-136-0x0000000005760000-0x00000000057F2000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4952-134-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

      Download

    • memory/4952-304-0x0000000005710000-0x0000000005720000-memory.dmp

      Filesize

      64KB

      Download

    • memory/5024-147-0x0000000002330000-0x0000000002331000-memory.dmp

      Filesize

      4KB

      Download