Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    135s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-05-2024 14:54

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General

  • Target

    Client.exe

  • Size

    158KB

  • MD5

    ddd78d5b177c9515d2e8fb3e2c0d3ca2

  • SHA1

    cfac443e8eaf2b855a109a53ac1cdd041bbb64d1

  • SHA256

    35d8f56cdb6c9a6b6ddbc00374a69a147f691d6640f7c199199d321bf1ec6923

  • SHA512

    d6e2793bca32d98a1ec3be6b82d2f7c2225ed756cb3761d6b921588b99bd6e7fefa261fdc16907074e8f23be96563bc9c94b148e8f23425760d3d955139227eb

  • SSDEEP

    3072:abz7H+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPbSO8Y:abz7e0ODhTEPgnjuIJzo+PPcfPbN8

Score
10/10
arrowratclientpersistencerat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

C2

99.83.12.91:1337

Mutex

mfrPoMrhW

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 2 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 Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 33 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5072
    • 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:4308
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 99.83.12.91 1337 mfrPoMrhW
      2⤵
        PID:4060
    • 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:1952
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:5036

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133601720575578069.txt
      Filesize

      75KB

      MD5

      79ea60e4feeffe4483ba2d0ea61852fb

      SHA1

      7d5921a1b6240cc717ad4f4478bbcfc42f3af8e8

      SHA256

      1e85f6cd486b20682b1a6af9f34e7993a558f3b5dccd1e80a55178847e794923

      SHA512

      4d0866c2b63af9570fa20bca628a6e67b3704d7ab5a8a1311fb614f38b54444cc6630390092282f075751cae38000a17e4bf1cb992a8900b0c72965c0b24dbf4

      Download Submit

    • memory/4060-7-0x0000000005E00000-0x0000000005E66000-memory.dmp

      Filesize

      408KB

      Download

    • memory/4060-2-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

      Download

    • memory/4060-10-0x00000000066C0000-0x0000000006710000-memory.dmp

      Filesize

      320KB

      Download

    • memory/4060-4-0x00000000055F0000-0x0000000005682000-memory.dmp

      Filesize

      584KB

      Download

    • memory/4060-5-0x0000000005690000-0x000000000572C000-memory.dmp

      Filesize

      624KB

      Download

    • memory/4060-6-0x0000000005EC0000-0x0000000006464000-memory.dmp

      Filesize

      5.6MB

      Download

    • memory/4308-13-0x00000000033C0000-0x00000000033C1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/5036-20-0x00000231A0A90000-0x00000231A0AB0000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5036-32-0x00000231A0A50000-0x00000231A0A70000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5036-51-0x00000231A1060000-0x00000231A1080000-memory.dmp

      Filesize

      128KB

      Download

    • memory/5072-3-0x00007FFE770A0000-0x00007FFE77B61000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/5072-0-0x0000027D1D9F0000-0x0000027D1DA1E000-memory.dmp

      Filesize

      184KB

      Download

    • memory/5072-1-0x00007FFE770A3000-0x00007FFE770A5000-memory.dmp

      Filesize

      8KB

      Download

    • memory/5072-200-0x00007FFE770A0000-0x00007FFE77B61000-memory.dmp

      Filesize

      10.8MB

      Download