Overview

overview

10

Static

static

10

2026-04-16...ry.exe

windows10-2004-x64

10

2026-04-16...ry.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    16/04/2026, 15:00

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General

  • Target
    2026-04-16_9f9aa2c0cab0d352727a363ec262bf3a_cobalt-strike_elex_wannacry.exe
  • Size 4.0MB
  • Sample260416-sdjbgaez2w
  • SHA256 b2a81803f81175bcc425dbf709f10fde555486f5182363c239a83e7b8abc4779
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (788) files with added filename extension

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

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

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

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-16_9f9aa2c0cab0d352727a363ec262bf3a_cobalt-strike_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-16_9f9aa2c0cab0d352727a363ec262bf3a_cobalt-strike_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:912

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-3847269522-1618051987-1942096715-1000\desktop.ini.tmp
        • Size 4.0MB
        • SHA256 25eb854fe0380ec4fb4d3fcf7c8ac92852b4fabc651054f5349e4d9cf4ee68f8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 4.1MB
        • SHA256 6ba177bff5b972ed87c8259a689dca371a9688dce49cfc3cd3efc30f14a4664d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/912-0-0x0000000000400000-0x000000000040A000-memory.dmp
        Download

        memory/912-151-0x0000000000400000-0x000000000040A000-memory.dmp
        Download