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Overview

overview

8

Static

static

1

client-build.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    133s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2023, 22:14

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General

  • Target

    client-build.exe

  • Size

    187KB

  • MD5

    0acd99a9a2bdd147a4b0f14cd409993c

  • SHA1

    df170815c2d8e2d7c6a5e3a9880406abb2c6be0c

  • SHA256

    d519f6033e46bd7e4a3162864de97b9d515c3ea4df4db7d9158bef1799eaa674

  • SHA512

    adf131b3e47ad8ef39de72cb93d553ceb2c4e73280832dee68d9cd5167fbc5745fc520eb5be7e07f4c8f970e0f85c4be07740847a5882311ca40f9a979d25562

  • SSDEEP

    3072:7brd2ybMsF/yePO0m5IKOP1yr075XQODG4sp61V8F4Bp7r9QoSHtAYVoURdlIExb:7bNbMRGOh2twrsDTspL4v7+NFBoH

Score
8/10
persistence

Malware Config

Signatures

  • 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.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\client-build.exe
    "C:\Users\Admin\AppData\Local\Temp\client-build.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:8
    • 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:2708
  • 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:2100
  • 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:2880

Network

MITRE ATT&CK Enterprise v6

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Downloads

  • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\Microsoft_AutoGenerated_{0A6AC72E-ED8C-C16F-38B6-05831557CF24}
    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\{1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}_WindowsPowerShell_v1_0_powershell_exe
    Filesize

    36KB

    MD5

    94b56d65a8b7f7253aeacac345d4b096

    SHA1

    7e11e248ae804d3647479a4fe5f03835a1eee4bc

    SHA256

    0f312587a999305794730da6f2198c82a346e64211e2fb054256102ac70315be

    SHA512

    538cc0c1b4dc66e8a3c6ca9a17ddac128441874248589bcc6c88b64ad7d3b93ff143867d6fad0002cbb4584e951d0e82441c350396e6d59b73207a3ffe0fc055

    Download Submit

  • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133224452632328539.txt
    Filesize

    75KB

    MD5

    65019a5db517d9fb830d8a57406a03ea

    SHA1

    817faf2ffe8461f653519e7bd96e7ee75021c891

    SHA256

    3ae88b3a99e6b785bdb44760790bc03ac722ef5b673ad5b3ca49b5cc5eecf84f

    SHA512

    bcc985d3fa48efcbb4a334b1a341a6686ef6c69f237d6d9bdcd9885696d148519ab824b9150194d783cb03189c1cc00a483f1b73ebce323f1f6a303a05b8ea62

    Download Submit

  • memory/8-133-0x0000000000070000-0x00000000000A6000-memory.dmp

    Filesize

    216KB

    Download

  • memory/8-134-0x0000000004AE0000-0x0000000004B7C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/2708-137-0x0000000002FE0000-0x0000000002FE1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2880-143-0x000001D677CF0000-0x000001D677D10000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2880-145-0x000001D677CB0000-0x000001D677CD0000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2880-147-0x000001D6782C0000-0x000001D6782E0000-memory.dmp

    Filesize

    128KB

    Download