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Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 14:46

General

  • Target

    b4f52848c48aea663e5344e33a1b087a.exe

  • Size

    609KB

  • MD5

    b4f52848c48aea663e5344e33a1b087a

  • SHA1

    952e076be5498fcbb41123070c5a297c329e2395

  • SHA256

    25510d20b983dbfc0443684dd1674192cb32b9ab06a2ab9e67e2db6f99ead154

  • SHA512

    5e78c19e2084ae3c9f90be86e4458ded13cea66f2185bc26637a2b00f8ff57d5d1da09ed99f47b981e59815ef63ee7d10ffb506157b178e95fa56356e8dc997e

  • SSDEEP

    12288:BLcKp2Adls/rnjs7RLKslAmJSv4KMwUU9d8Kb6a:CK2GsD4RLTlzJSv4sGKGa

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:632
    • C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
      "C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe"
      1⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
        C:\Users\Admin\AppData\Local\Temp\b4f52848c48aea663e5344e33a1b087a.exe
        2⤵
        • Modifies WinLogon for persistence
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1884

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • memory/632-168-0x000000002F800000-0x000000002F817000-memory.dmp

      Filesize

      92KB

    • memory/632-178-0x000000002F840000-0x000000002F857000-memory.dmp

      Filesize

      92KB

    • memory/632-313-0x000000002FBA0000-0x000000002FBB7000-memory.dmp

      Filesize

      92KB

    • memory/632-308-0x000000002FB80000-0x000000002FB97000-memory.dmp

      Filesize

      92KB

    • memory/632-28-0x000000002F480000-0x000000002F497000-memory.dmp

      Filesize

      92KB

    • memory/632-33-0x000000002F4A0000-0x000000002F4B7000-memory.dmp

      Filesize

      92KB

    • memory/632-38-0x000000002F4C0000-0x000000002F4D7000-memory.dmp

      Filesize

      92KB

    • memory/632-43-0x000000002F4E0000-0x000000002F4F7000-memory.dmp

      Filesize

      92KB

    • memory/632-48-0x000000002F500000-0x000000002F517000-memory.dmp

      Filesize

      92KB

    • memory/632-53-0x000000002F520000-0x000000002F537000-memory.dmp

      Filesize

      92KB

    • memory/632-58-0x000000002F540000-0x000000002F557000-memory.dmp

      Filesize

      92KB

    • memory/632-63-0x000000002F560000-0x000000002F577000-memory.dmp

      Filesize

      92KB

    • memory/632-68-0x000000002F580000-0x000000002F597000-memory.dmp

      Filesize

      92KB

    • memory/632-73-0x000000002F5A0000-0x000000002F5B7000-memory.dmp

      Filesize

      92KB

    • memory/632-78-0x000000002F5C0000-0x000000002F5D7000-memory.dmp

      Filesize

      92KB

    • memory/632-83-0x000000002F5E0000-0x000000002F5F7000-memory.dmp

      Filesize

      92KB

    • memory/632-88-0x000000002F600000-0x000000002F617000-memory.dmp

      Filesize

      92KB

    • memory/632-173-0x000000002F820000-0x000000002F837000-memory.dmp

      Filesize

      92KB

    • memory/632-98-0x000000002F640000-0x000000002F657000-memory.dmp

      Filesize

      92KB

    • memory/632-103-0x000000002F660000-0x000000002F677000-memory.dmp

      Filesize

      92KB

    • memory/632-108-0x000000002F680000-0x000000002F697000-memory.dmp

      Filesize

      92KB

    • memory/632-113-0x000000002F6A0000-0x000000002F6B7000-memory.dmp

      Filesize

      92KB

    • memory/632-118-0x000000002F6C0000-0x000000002F6D7000-memory.dmp

      Filesize

      92KB

    • memory/632-123-0x000000002F6E0000-0x000000002F6F7000-memory.dmp

      Filesize

      92KB

    • memory/632-128-0x000000002F700000-0x000000002F717000-memory.dmp

      Filesize

      92KB

    • memory/632-133-0x000000002F720000-0x000000002F737000-memory.dmp

      Filesize

      92KB

    • memory/632-138-0x000000002F740000-0x000000002F757000-memory.dmp

      Filesize

      92KB

    • memory/632-143-0x000000002F760000-0x000000002F777000-memory.dmp

      Filesize

      92KB

    • memory/632-148-0x000000002F780000-0x000000002F797000-memory.dmp

      Filesize

      92KB

    • memory/632-153-0x000000002F7A0000-0x000000002F7B7000-memory.dmp

      Filesize

      92KB

    • memory/632-158-0x000000002F7C0000-0x000000002F7D7000-memory.dmp

      Filesize

      92KB

    • memory/632-163-0x000000002F7E0000-0x000000002F7F7000-memory.dmp

      Filesize

      92KB

    • memory/632-23-0x000000002F460000-0x000000002F477000-memory.dmp

      Filesize

      92KB

    • memory/632-18-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/632-93-0x000000002F620000-0x000000002F637000-memory.dmp

      Filesize

      92KB

    • memory/632-183-0x000000002F860000-0x000000002F877000-memory.dmp

      Filesize

      92KB

    • memory/632-188-0x000000002F880000-0x000000002F897000-memory.dmp

      Filesize

      92KB

    • memory/632-193-0x000000002F8A0000-0x000000002F8B7000-memory.dmp

      Filesize

      92KB

    • memory/632-198-0x000000002F8C0000-0x000000002F8D7000-memory.dmp

      Filesize

      92KB

    • memory/632-203-0x000000002F8E0000-0x000000002F8F7000-memory.dmp

      Filesize

      92KB

    • memory/632-208-0x000000002F900000-0x000000002F917000-memory.dmp

      Filesize

      92KB

    • memory/632-213-0x000000002F920000-0x000000002F937000-memory.dmp

      Filesize

      92KB

    • memory/632-218-0x000000002F940000-0x000000002F957000-memory.dmp

      Filesize

      92KB

    • memory/632-223-0x000000002F960000-0x000000002F977000-memory.dmp

      Filesize

      92KB

    • memory/632-228-0x000000002F980000-0x000000002F997000-memory.dmp

      Filesize

      92KB

    • memory/632-233-0x000000002F9A0000-0x000000002F9B7000-memory.dmp

      Filesize

      92KB

    • memory/632-238-0x000000002F9C0000-0x000000002F9D7000-memory.dmp

      Filesize

      92KB

    • memory/632-243-0x000000002F9E0000-0x000000002F9F7000-memory.dmp

      Filesize

      92KB

    • memory/632-248-0x000000002FA00000-0x000000002FA17000-memory.dmp

      Filesize

      92KB

    • memory/632-253-0x000000002FA20000-0x000000002FA37000-memory.dmp

      Filesize

      92KB

    • memory/632-258-0x000000002FA40000-0x000000002FA57000-memory.dmp

      Filesize

      92KB

    • memory/632-263-0x000000002FA60000-0x000000002FA77000-memory.dmp

      Filesize

      92KB

    • memory/632-268-0x000000002FA80000-0x000000002FA97000-memory.dmp

      Filesize

      92KB

    • memory/632-273-0x000000002FAA0000-0x000000002FAB7000-memory.dmp

      Filesize

      92KB

    • memory/632-278-0x000000002FAC0000-0x000000002FAD7000-memory.dmp

      Filesize

      92KB

    • memory/632-283-0x000000002FAE0000-0x000000002FAF7000-memory.dmp

      Filesize

      92KB

    • memory/632-288-0x000000002FB00000-0x000000002FB17000-memory.dmp

      Filesize

      92KB

    • memory/632-293-0x000000002FB20000-0x000000002FB37000-memory.dmp

      Filesize

      92KB

    • memory/632-298-0x000000002FB40000-0x000000002FB57000-memory.dmp

      Filesize

      92KB

    • memory/632-303-0x000000002FB60000-0x000000002FB77000-memory.dmp

      Filesize

      92KB

    • memory/1884-5-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/1884-3-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/1884-8-0x0000000000570000-0x0000000000583000-memory.dmp

      Filesize

      76KB

    • memory/1884-9-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/1884-3001-0x0000000000400000-0x0000000000417000-memory.dmp

      Filesize

      92KB

    • memory/5008-0-0x0000000000400000-0x0000000000437000-memory.dmp

      Filesize

      220KB

    • memory/5008-6-0x0000000000400000-0x0000000000437000-memory.dmp

      Filesize

      220KB