Overview

overview

3

Static

static

3

tmpxnk8u207.exe

windows10-ltsc_2021-x64

3

tmpxnk8u207.exe

windows10-2004-x64

3

tmpxnk8u207.exe

windows11-21h2-x64

3

Analysis

  • max time kernel
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 11:32

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General

  • Target
    tmpxnk8u207.exe
  • Size 237KB
  • Sample260522-nnhepsct3t
  • SHA256 88411957bd451e47c79ccb45655e419b62bbcb997ab0af512fa8709cf2549ed6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10
discovery

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 58 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    PID:3212
    • C:\Users\Admin\AppData\Local\Temp\tmpxnk8u207.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpxnk8u207.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Windows\SysWOW64\winver.exe
        winver
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:3080
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 332
          4⤵
          • Program crash
          PID:4700
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 844
        3⤵
        • Program crash
        PID:2632
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman
    1⤵
    • Modifies data under HKEY_USERS
    PID:4292
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 352 -p 3080 -ip 3080
    1⤵
      PID:3228
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2728 -ip 2728
      1⤵
        PID:4212

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            memory/2728-1-0x0000000004CA0000-0x00000000052F8000-memory.dmp
            Download

            memory/2728-2-0x0000000004B00000-0x0000000004B01000-memory.dmp
            Download

            memory/2728-6-0x0000000000400000-0x000000000043F000-memory.dmp
            Download

            memory/2728-12-0x0000000004CA0000-0x00000000052F8000-memory.dmp
            Download

            memory/3212-4-0x00000000025D0000-0x00000000025D6000-memory.dmp
            Download

            memory/3212-5-0x00000000025D0000-0x00000000025D6000-memory.dmp
            Download

            memory/3212-9-0x0000000002610000-0x0000000002616000-memory.dmp
            Download