Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 16:53

General

  • Target
    2026-05-28_261c94bf2865c2f21afea0c3a3ed9d28_elex_wannacry.exe
  • Size 116KB
  • Sample260528-vd8bpsfw9m
  • SHA256 bfdefbf3c7190746817ad925142d34e68b30aeff60d13fc23cae676b6f6fe2f3
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Renames multiple (259) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-28_261c94bf2865c2f21afea0c3a3ed9d28_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-28_261c94bf2865c2f21afea0c3a3ed9d28_elex_wannacry.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4792
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4452
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:6124
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a1F3B.bat
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5796
    • C:\Windows\Logo1_.exe
      C:\Windows\Logo1_.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:792
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4944
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5792
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4272
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2112
  • C:\Windows\uninstall\rundl132.exe
    C:\Windows\uninstall\rundl132.exe
    1⤵
    • Drops file in Drivers directory
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5368

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RCXB845.tmp

        • Path C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RCXB845.tmp
        • Size 156KB
        • SHA256 431191d3a03afafcb8063f1816c74ff453ee543ab025e525403053e88881e036
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBA5A.tmp

        • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCXBA5A.tmp
        • Size 94KB
        • SHA256 10318034b0bdc823dfd70ca6a9521e4ce5d0a365ff5e364d071687077aab67ed
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBD1B.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\RCXBD1B.tmp
        • Size 103KB
        • SHA256 6f9b702481e3a4f15fd2419e1687e70ece4f7d63d1178ed0524b1e62e9209ed9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBD6D.tmp

        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\RCXBD6D.tmp
        • Size 91KB
        • SHA256 aaa907532b4823deae5cf12b8ba866b30049dceb90aefc96ef0ef498b5a6207f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msedge.exe.Exe

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge.exe.Exe
        • Size 4.0MB
        • SHA256 795af3d63fb35caf5f0fe65480c35924e86d900de1f9f0f5c1b8e2761602690e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXBE77.tmp

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\RCXBE77.tmp
        • Size 100KB
        • SHA256 6e92d21f20e9bdee4275abb779e287b1bd5bc00407602cf1196041697a734fd7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7z.exe.Exe

        • Path C:\Program Files\7-Zip\7z.exe.Exe
        • Size 642KB
        • SHA256 58254e0fb5cfd324fa7d05c65f9b538c5adeb2f7d841b161879b454869c0b8a4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXACA8.tmp

        • Path C:\Program Files\7-Zip\RCXACA8.tmp
        • Size 91KB
        • SHA256 096f8962e11e660216bdb4ab4464a09d8d81bb6313fa234aa34954cf7e64f3b7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXAD9A.tmp

        • Path C:\Program Files\Java\jdk-1.8\bin\RCXAD9A.tmp
        • Size 92KB
        • SHA256 382281fb3951695427812f7535283d42d0727d1b0e00b197545f5f6bc480363e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SPREADSHEETCOMPARE.EXE.Exe

        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE.Exe
        • Size 554KB
        • SHA256 c669a3f56e223ae8046be8226ddbee7d378539cb6b9e6fe861858575cdbc4dba
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCXC2BD.tmp

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\RCXC2BD.tmp
        • Size 92KB
        • SHA256 adfaa8976b762acf566cba48ba46f32f5a14a6d955d4b91916d6efe7793f7991
        • MD5 SHA1 SHA512 SSDEEP TLSH

        $$a1F3B.bat

        • Path C:\Users\Admin\AppData\Local\Temp\$$a1F3B.bat
        • Size 680B
        • SHA256 3fb86a7956d91c14c677387f362399c605833a38ffa9cb83f41bb74f49b73c9d
        • MD5 SHA1 SHA512 TLSH

        2026-05-28_261c94bf2865c2f21afea0c3a3ed9d28_elex_wannacry.exe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\2026-05-28_261c94bf2865c2f21afea0c3a3ed9d28_elex_wannacry.exe.exe
        • Size 23KB
        • SHA256 f953d7869a18de299f40756e92e30ae31e65dbfbc716add7b42e7a00916c677a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Logo1_.exe

        • Path C:\Windows\Logo1_.exe
        • Size 93KB
        • SHA256 21a91ca15f7914e1308146165387299bbdafe12f4f48ed919b374f3d0612c939
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hosts

        • Path C:\Windows\system32\drivers\etc\hosts
        • Size 842B
        • SHA256 d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e
        • MD5 SHA1 SHA512 TLSH

        memory/792-18-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/792-844-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/792-1263-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/4792-8-0x0000000000400000-0x0000000000429000-memory.dmp

        memory/5368-15-0x0000000000400000-0x0000000000429000-memory.dmp