Overview

overview

10

Static

static

10

2026-08-25...ry.exe

windows10-2004-x64

10

2026-08-25...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 04:25

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General

  • Target
    2026-08-25_e7b576a35e012d0250c05fc410a4a520_coinminer_elex_wannacry.exe
  • Size 551KB
  • Sample260826-e2d5rsyxa1
  • SHA256 273b53e078db6ad86c93713d61964b99a78cf11109d6204c8b07d4bdfd716d0b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareupxworm

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++.

  • Renames multiple (4754) files with added filename extension

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

    ransomware
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops file in Program Files directory 64 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.

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-25_e7b576a35e012d0250c05fc410a4a520_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-25_e7b576a35e012d0250c05fc410a4a520_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:924
    • 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:5300
    • C:\Users\Admin\AppData\Local\Temp\_7zFM.exe
      "_7zFM.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4812

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-1738198120-2966725515-3980530802-1000\desktop.ini.tmp
        • Size 67KB
        • SHA256 dbc23b5c6e8ceabe754fe06cb94314881ac6e018e4f71ba30c623be4cfd31f30
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _7zFM.exe
        • Path C:\Users\Admin\AppData\Local\Temp\_7zFM.exe
        • Size 483KB
        • SHA256 dd46a4193c15d57b9e05eaac9b6b0f2bab835384c7f59eb067553650e6fda065
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 67KB
        • SHA256 3b79608b4407ab514045d69c6b513f1159b8589c76a793efa1a832f5c72a9501
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/924-0-0x0000000000400000-0x000000000040B000-memory.dmp
        Download

        memory/924-537-0x0000000000400000-0x000000000040B000-memory.dmp
        Download