Analysis

  • max time kernel
    125s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 10:36

General

  • Target

    88ba1b56151c5ae35ec555a37db70ec3734fbfd6e1b76a1c2c53b1e2f8203b43.exe

  • Size

    1012KB

  • MD5

    c6754415c6cf116c9d588b42d9b53932

  • SHA1

    a8e845a34ade1430669b9fe0592fb0586bb51e77

  • SHA256

    88ba1b56151c5ae35ec555a37db70ec3734fbfd6e1b76a1c2c53b1e2f8203b43

  • SHA512

    d7f57f3b89cdd4d1ec334e900948e3dba4b0880830de91aabd3309a8c32aceac493d8462ce96a6e2d5f0535a567972803feeb8054a90a4e90a9118a1e8541929

  • SSDEEP

    12288:OPppN1nwJrIWXoFQnUCcf7VxFssV8Uc2KD0fTMFz8eYwlfA2CdWxjFP7dxljI8wL:OrzmuV71TMFYOlfpfFPhxljI8w

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88ba1b56151c5ae35ec555a37db70ec3734fbfd6e1b76a1c2c53b1e2f8203b43.exe
    "C:\Users\Admin\AppData\Local\Temp\88ba1b56151c5ae35ec555a37db70ec3734fbfd6e1b76a1c2c53b1e2f8203b43.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\regsvr32.exe /u /s "C:\Users\Admin\AppData\Local\Temp\DeskmgrShellExtx64.dll"
      2⤵
        PID:1904
      • C:\Windows\SysWOW64\Netsh.exe
        "C:\Windows\system32\Netsh.exe" exec "C:\Users\Admin\AppData\Local\Temp\UNI7A3D.tmp\firewallLog.txt"
        2⤵
          PID:3872
      • 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 --field-trial-handle=3060,i,3595107284059830391,18018199024659337217,262144 --variations-seed-version --mojo-platform-channel-handle=4308 /prefetch:8
        1⤵
          PID:232

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Persistence

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Defense Evasion

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Discovery

        System Information Discovery

        1
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Tencent\DeskGo\DeskGoUninst_20240612103645.Log
          Filesize

          5KB

          MD5

          6e90345be94139cedc00b15a0800ca05

          SHA1

          5d7b1ec9a267c8757d699dac4b3cd41eb87425d8

          SHA256

          c540cb289544198f5db1fff946ad9515301dcef0af4c5b178527cb3ff1b91e0e

          SHA512

          dd26b8be27bca9acc8a51926696cf12782959f7b8a9897e868cbbe9a7f298b1f5172aa4a6684f33e0d921b57f687733c9804f11330265f4a7240a80a7a421eff

        • C:\Users\Admin\AppData\Local\Temp\UNI7A3D.tmp\dr.dll
          Filesize

          427KB

          MD5

          68a34245c650829c613e9068bdc6f79d

          SHA1

          f877ad637c2097915ba894fdccb1a596a52a726e

          SHA256

          c72cc19b9ee4546378d22483d5cbe612805be585658df9d28677174b19c2b3bf

          SHA512

          1c9181c1693f3fb4c3044f57f9113f1858cb709c56ea7beec1d41026c4a64070e221dcb61669fbdab63fc0669df24f4a126ea517a157a738b9a35d784cef9afe

        • C:\Users\Admin\AppData\Local\Temp\UNI7A3D.tmp\firewallLog.txt
          Filesize

          104B

          MD5

          bb2bc660ceba457e96e328d6771f93cb

          SHA1

          5387c389561eee423fc284a887ae752d478e3dd6

          SHA256

          c784f85e2d745af795236284f46b9c0a0cab51d8cd5dffc7d94e2421cefeae5c

          SHA512

          6ced4915cd8988895bf9a8f96d75508f57a20b8f5f7952f09706bdc5c8dd651d0f2ea52397a370abd8a578215e7828dbffba36e695c80920475d859ba3de00a0

        • memory/1628-180-0x0000000000590000-0x0000000000691000-memory.dmp
          Filesize

          1.0MB