Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-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 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

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:2916
    • 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:2448
    • 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:816
    • 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:5092
    • 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:2680
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1328 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1880

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\Microsoft_AutoGenerated_{2F519BF2-C697-59F8-8F6A-1E19509CE66B}
        Filesize

        36KB

        MD5

        8aaad0f4eb7d3c65f81c6e6b496ba889

        SHA1

        231237a501b9433c292991e4ec200b25c1589050

        SHA256

        813c66ce7dec4cff9c55fb6f809eab909421e37f69ff30e4acaa502365a32bd1

        SHA512

        1a83ce732dc47853bf6e8f4249054f41b0dea8505cda73433b37dfa16114f27bfed3b4b3ba580aa9d53c3dcc8d48bf571a45f7c0468e6a0f2a227a7e59e17d62

        Download Submit

      • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\Microsoft_Windows_ControlPanel
        Filesize

        36KB

        MD5

        fb5f8866e1f4c9c1c7f4d377934ff4b2

        SHA1

        d0a329e387fb7bcba205364938417a67dbb4118a

        SHA256

        1649ec9493be27f76ae7304927d383f8a53dd3e41ea1678bacaff33120ea4170

        SHA512

        0fbe2843dfeab7373cde0643b20c073fdc2fcbefc5ae581fd1656c253dfa94e8bba4d348e95cc40d1e872456ecca894b462860aeac8b92cedb11a7cad634798c

        Download Submit

      • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133601721221612492.txt
        Filesize

        74KB

        MD5

        80dffedad36ef4c303579f8c9be9dbd7

        SHA1

        792ca2a83d616ca82d973ece361ed9e95c95a0d8

        SHA256

        590ca4d2f62a7864a62ccb1075c55191f7f9d5c5304ea3446961bb50f9e3916e

        SHA512

        826b97a4de7c765f8f5ebc520960f68381fd9f4bfe68c2fbe46c6118110c9c14a87dcb8ed8102e60a954b4b3c408f72e7a93fd96317be3d51120a2ddd2faa3ea

        Download Submit

      • memory/816-173-0x0000000006290000-0x0000000006834000-memory.dmp

        Filesize

        5.6MB

        Download

      • memory/816-174-0x0000000006220000-0x0000000006286000-memory.dmp

        Filesize

        408KB

        Download

      • memory/816-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

        Download

      • memory/816-177-0x00000000069A0000-0x00000000069F0000-memory.dmp

        Filesize

        320KB

        Download

      • memory/816-170-0x0000000005970000-0x0000000005A0C000-memory.dmp

        Filesize

        624KB

        Download

      • memory/816-169-0x00000000058D0000-0x0000000005962000-memory.dmp

        Filesize

        584KB

        Download

      • memory/2448-4-0x0000000002FA0000-0x0000000002FA1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/2680-216-0x0000011514800000-0x000001151612F000-memory.dmp

        Filesize

        25.2MB

        Download

      • memory/2680-280-0x0000011514800000-0x000001151612F000-memory.dmp

        Filesize

        25.2MB

        Download

      • memory/2680-168-0x0000011514800000-0x000001151612F000-memory.dmp

        Filesize

        25.2MB

        Download

      • memory/2680-33-0x0000011D16FD0000-0x0000011D16FF0000-memory.dmp

        Filesize

        128KB

        Download

      • memory/2680-11-0x0000011D17420000-0x0000011D17440000-memory.dmp

        Filesize

        128KB

        Download

      • memory/2680-7-0x0000011D16500000-0x0000011D16600000-memory.dmp

        Filesize

        1024KB

        Download

      • memory/2680-40-0x0000011D179E0000-0x0000011D17A00000-memory.dmp

        Filesize

        128KB

        Download

      • memory/2680-6-0x0000011D16500000-0x0000011D16600000-memory.dmp

        Filesize

        1024KB

        Download

      • memory/2916-0-0x00007FFA36593000-0x00007FFA36595000-memory.dmp

        Filesize

        8KB

        Download

      • memory/2916-181-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/2916-172-0x00007FFA36593000-0x00007FFA36595000-memory.dmp

        Filesize

        8KB

        Download

      • memory/2916-1-0x000001B59E3C0000-0x000001B59E3EE000-memory.dmp

        Filesize

        184KB

        Download

      • memory/2916-3-0x00007FFA36590000-0x00007FFA37051000-memory.dmp

        Filesize

        10.8MB

        Download