Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    06/05/2026, 19:05

General

  • Target
    2026-05-06_11e17185458b8345002d8ae7de5d65d4_elex_wannacry.exe
  • Size 3.9MB
  • Sample260506-xrmy2agy5w
  • SHA256 9dbcaa3018e8bb3fd62ccc1ba2f47b9c4c1db87b0bd999f206763a78b407f3c8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (1090) files with added filename extension

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

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 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.

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-06_11e17185458b8345002d8ae7de5d65d4_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-06_11e17185458b8345002d8ae7de5d65d4_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4928
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:2328
    • C:\Users\Admin\AppData\Local\Temp\_FlickLearningWizard.exe
      "_FlickLearningWizard.exe"
      2⤵
      • Executes dropped EXE
      PID:3180

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-600123060-2148212387-2211176695-1000\desktop.ini.tmp
        • Size 3.0MB
        • SHA256 ec79f7dc4a8e5b830eb2419312a9fc96ed77dbdb9a7597aaf76b1829da25be7e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _FlickLearningWizard.exe

        • Path C:\Users\Admin\AppData\Local\Temp\_FlickLearningWizard.exe
        • Size 906KB
        • SHA256 d2072ffe011341ec2a3c4af9f93b06deffa92fa05120c45dbb3ad5635f3e57b1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Zombie.exe

        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 3.0MB
        • SHA256 23cfdc7163c99d4af7bd56eefef8557bc34912c60ab1ea5ebba22581b1bb1336
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3180-11-0x00000000013E0000-0x0000000001758000-memory.dmp

        memory/4928-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/4928-13-0x0000000000400000-0x000000000040A000-memory.dmp