Overview

overview

10

Static

static

10

bJ99.exe

windows7-x64

10

bJ99.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • 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 23:35

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General

  • Target

    bJ99.exe

  • Size

    138KB

  • MD5

    2f73fdfb8140276968f2c1b358e5edf0

  • SHA1

    160ec42cd31c98fdd91c8a837be32757b2b9af92

  • SHA256

    5a45e4a32a4f2081b33dee2ab94eb3ebb4afafe0bd8f5b76e93dfe975c4a607c

  • SHA512

    65c2ac40557d94cf715d720a3774547f10253fe00071cd6e1824f6304f02187e26184b7c064e8c5d0526bd8650e5854bae283cb080ea17ef3d007f28b0d477f3

  • SSDEEP

    3072:+bvY5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/Yh:+bvwS7BqjjYHdrqkL/

Score
10/10
arrowratojg36cpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

OJG36C

C2

mayo21.duckdns.org:2158

Mutex

NT7WTE

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 50 IoCs
  • Suspicious use of SendNotifyMessage 22 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bJ99.exe
    "C:\Users\Admin\AppData\Local\Temp\bJ99.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:336
    • 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:3844
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" OJG36C mayo21.duckdns.org 2158 NT7WTE
      2⤵
        PID:4368
    • 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:748
    • 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:2472

    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\AppCache133225365248438924.txt.~tmp
      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

      Download Submit

    • memory/336-133-0x00000140B42D0000-0x00000140B42F8000-memory.dmp

      Filesize

      160KB

      Download

    • memory/2472-157-0x000001E66CE00000-0x000001E66CE20000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2472-155-0x000001E66C9A0000-0x000001E66C9C0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/2472-153-0x000001E66C9F0000-0x000001E66CA10000-memory.dmp

      Filesize

      128KB

      Download

    • memory/3844-147-0x0000000002FD0000-0x0000000002FD1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4368-137-0x00000000052B0000-0x000000000534C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4368-143-0x0000000006460000-0x00000000064B0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4368-140-0x0000000006140000-0x00000000061A6000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4368-139-0x0000000005420000-0x0000000005430000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4368-138-0x0000000005B20000-0x00000000060C4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4368-136-0x00000000051E0000-0x0000000005272000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4368-134-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

      Download

    • memory/4368-286-0x0000000005420000-0x0000000005430000-memory.dmp

      Filesize

      64KB

      Download