Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    19/05/2026, 14:19

General

  • Target
    2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe
  • Size 598KB
  • Sample260519-rm37kahs2l
  • SHA256 2a5a860b1c2074ce13ccc0f08c055d67a512cd078f57ae157e428538b51af24e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Detect Neshta payload 5 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2620
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2664
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7zS7C20.tmp\Install.cmd" "
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:756
        • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
          "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\7zS7C20.tmp\Installation_VScom_PCI_(readme).rtf" /o ""
          4⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of SetWindowsHookEx
          PID:4440

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\2026-05-19_98befa637a1a6e27ae3cbc71cfc33e43_elex_neshta_wannacry.exe
        • Size 557KB
        • SHA256 c287e81eaf6e386a5a110b2f978b399f5fe001ed655e3316298b101c5627ae07
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Install.cmd

        • Path C:\Users\Admin\AppData\Local\Temp\7zS7C20.tmp\Install.cmd
        • Size 556B
        • SHA256 7076450c5484ba8a85dae329dd0f177d81a8075a8851c215f073c3700f97f940
        • MD5 SHA1 SHA512 TLSH

        Installation_VScom_PCI_(readme).rtf

        • Path C:\Users\Admin\AppData\Local\Temp\7zS7C20.tmp\Installation_VScom_PCI_(readme).rtf
        • Size 2KB
        • SHA256 04a768153ae4a7f363535f33c44932aee64b91562b18c48e23cfefa4929f1b1b
        • MD5 SHA1 SHA512 TLSH

        VsSerDef.cfg

        • Path C:\Users\Admin\AppData\Local\Temp\7zS7C20.tmp\x64\VsSerDef.cfg
        • Size 1KB
        • SHA256 3c61d23288a7f81c1b532e1c9c6da895c49c43fcc99231b259b81c50d0672e92
        • MD5 SHA1 SHA512 TLSH

        CUSTOM.DIC

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC
        • Size 16B
        • SHA256 a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866
        • MD5 SHA1 SHA512

        memory/2620-245-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2620-243-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2620-242-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2620-239-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4440-99-0x00007FFB8CD90000-0x00007FFB8CDA0000-memory.dmp

        memory/4440-105-0x00007FFB8AD30000-0x00007FFB8AD40000-memory.dmp

        memory/4440-104-0x00007FFB8AD30000-0x00007FFB8AD40000-memory.dmp

        memory/4440-102-0x00007FFB8CD90000-0x00007FFB8CDA0000-memory.dmp

        memory/4440-103-0x00007FFB8CD90000-0x00007FFB8CDA0000-memory.dmp

        memory/4440-100-0x00007FFB8CD90000-0x00007FFB8CDA0000-memory.dmp

        memory/4440-101-0x00007FFB8CD90000-0x00007FFB8CDA0000-memory.dmp