Overview

overview

10

Static

static

10

arrow/0caa...bd.exe

windows7-x64

10

arrow/0caa...bd.exe

windows10-2004-x64

10

arrow/150c...0a.exe

windows7-x64

10

arrow/150c...0a.exe

windows10-2004-x64

10

arrow/17a7...ff.exe

windows7-x64

10

arrow/17a7...ff.exe

windows10-2004-x64

10

arrow/2380...0c.exe

windows7-x64

10

arrow/2380...0c.exe

windows10-2004-x64

10

arrow/2fb8...ee.exe

windows7-x64

3

arrow/2fb8...ee.exe

windows10-2004-x64

7

arrow/3dbd...fb.exe

windows7-x64

10

arrow/3dbd...fb.exe

windows10-2004-x64

10

arrow/4a09...07.exe

windows7-x64

10

arrow/4a09...07.exe

windows10-2004-x64

10

arrow/4c4d...a5.exe

windows7-x64

3

arrow/4c4d...a5.exe

windows10-2004-x64

7

arrow/54a0...24.exe

windows7-x64

10

arrow/54a0...24.exe

windows10-2004-x64

10

arrow/59a7...8c.exe

windows7-x64

10

arrow/59a7...8c.exe

windows10-2004-x64

10

arrow/5a45...7c.exe

windows7-x64

10

arrow/5a45...7c.exe

windows10-2004-x64

10

arrow/5d57...92.exe

windows7-x64

10

arrow/5d57...92.exe

windows10-2004-x64

10

arrow/6540...5e.exe

windows7-x64

10

arrow/6540...5e.exe

windows10-2004-x64

10

arrow/8a3d...bc.exe

windows7-x64

10

arrow/8a3d...bc.exe

windows10-2004-x64

10

arrow/a192...71.exe

windows7-x64

10

arrow/a192...71.exe

windows10-2004-x64

7

arrow/b20d...3f.exe

windows7-x64

10

arrow/b20d...3f.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    150s
  • 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

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General

  • Target

    arrow/8a3d555c8d1019b6d42721a2eea770d2101458fd70b208f6767db2eeb1cd44bc.exe

  • Size

    138KB

  • MD5

    d0488c635bdf39e3670bccb70e240ef9

  • SHA1

    3deb0acc0a9d72202e38d1afcae265d4671489d8

  • SHA256

    8a3d555c8d1019b6d42721a2eea770d2101458fd70b208f6767db2eeb1cd44bc

  • SHA512

    4370af21751cceffcbcdf37e9a6f36e404fd6eaab649e3dcb52a37fc0ee11c854539e08a711975f907b1c1ff577b9b13a659dfd0d008b089c26f85501e79a94f

  • SSDEEP

    3072:Obvt5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/YG:Obv7S7BqjjYHdrqkL/

Score
10/10
arrowrat21ltx5persistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

21LTX5

C2

bigrussianfloppa.duckdns.org:1338

Mutex

M7SYHB

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 31 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\8a3d555c8d1019b6d42721a2eea770d2101458fd70b208f6767db2eeb1cd44bc.exe
    "C:\Users\Admin\AppData\Local\Temp\arrow\8a3d555c8d1019b6d42721a2eea770d2101458fd70b208f6767db2eeb1cd44bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3260
    • 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:1352
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" 21LTX5 bigrussianfloppa.duckdns.org 1338 M7SYHB
      2⤵
        PID:3140
    • 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:1900
    • 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:1164

    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\AppCache133277369504330380.txt
      Filesize

      75KB

      MD5

      65019a5db517d9fb830d8a57406a03ea

      SHA1

      817faf2ffe8461f653519e7bd96e7ee75021c891

      SHA256

      3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

      SHA512

      bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

      Download Submit

    • memory/1164-159-0x00000256ECF10000-0x00000256ECF30000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1164-156-0x00000256ECB00000-0x00000256ECB20000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1164-153-0x00000256ECB40000-0x00000256ECB60000-memory.dmp

      Filesize

      128KB

      Download

    • memory/1352-146-0x0000000002530000-0x0000000002531000-memory.dmp

      Filesize

      4KB

      Download

    • memory/3140-137-0x0000000005790000-0x000000000582C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/3140-142-0x0000000006760000-0x00000000067B0000-memory.dmp

      Filesize

      320KB

      Download

    • memory/3140-145-0x0000000005960000-0x0000000005970000-memory.dmp

      Filesize

      64KB

      Download

    • memory/3140-139-0x0000000005EA0000-0x0000000005F06000-memory.dmp

      Filesize

      408KB

      Download

    • memory/3140-138-0x0000000005F20000-0x00000000064C4000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/3140-136-0x00000000056F0000-0x0000000005782000-memory.dmp

      Filesize

      584KB

      Download

    • memory/3140-134-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

      Download

    • memory/3140-300-0x0000000005960000-0x0000000005970000-memory.dmp

      Filesize

      64KB

      Download

    • memory/3260-133-0x0000016A78630000-0x0000016A78658000-memory.dmp

      Filesize

      160KB

      Download