Overview

overview

10

Static

static

3

2026-08-04...er.exe

windows10-2004-x64

10

2026-08-04...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 07:10

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General

  • Target
    2026-08-04_5b2811f5f515c2bb72e2f735366ec09c_amadey_darkgate_elex_glassworm_hawkeye_smoke-loader.exe
  • Size 402KB
  • Sample260804-hzl95sfa47
  • SHA256 df1d6a1d6b3783a1909773bdc1d8e34507454d6f4daf69584d83d9fe68262161
  • 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 1 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (4550) files with added filename extension

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

    ransomware
  • 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 3 IoCs

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

    discovery
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-04_5b2811f5f515c2bb72e2f735366ec09c_amadey_darkgate_elex_glassworm_hawkeye_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_5b2811f5f515c2bb72e2f735366ec09c_amadey_darkgate_elex_glassworm_hawkeye_smoke-loader.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Users\Admin\AppData\Local\Temp\_MavInject32.exe
      "_MavInject32.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4908
    • 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:2860

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-552508041-2681165170-3229858294-1000\desktop.ini.tmp
        • Size 43KB
        • SHA256 7cf350bd305d0edf28be7b44da991d065086f9ae1889c6c82cf7aa43fb48cc81
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _MavInject32.exe
        • Path C:\Users\Admin\AppData\Local\Temp\_MavInject32.exe
        • Size 359KB
        • SHA256 84d4c479221646130ed559a78fb278996fbc060cf87debf6e8bd2c270a7d70f2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 42KB
        • SHA256 d97faf77d9b5c815f278d7f2295830fe1d879f926b81286496d28f5b9aa05c87
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2256-0-0x0000000000400000-0x0000000000408000-memory.dmp
        Download

        memory/2256-14-0x0000000000400000-0x0000000000408000-memory.dmp
        Download