Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/06/2025, 08:18

General

  • Target

    5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe

  • Size

    32KB

  • MD5

    0854aa6022c7d4bae549983f48c03fb1

  • SHA1

    ce331d2fb5afda40af4f156bbc851b02a18ffc64

  • SHA256

    5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730

  • SHA512

    5e21c53aca0a8d41aa4c0f1c5e95c1003decc734762d4ed5efbd0dbd6be92ed40fd01ac673e2588915a36b514c18132d787fe83800097515ccb873896bd03efd

  • SSDEEP

    384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOYE/AE/DZKNZKy71j:uZ4FLz8ae+rOn8ae+rOrZkZ/71j

Malware Config

Signatures

  • Cosmu

    Cosmu is a Windows worm written in C++.

  • Cosmu family
  • Detects Cosmu payload 1 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (5197) files with added filename extension

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

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe
    "C:\Users\Admin\AppData\Local\Temp\5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1040

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-3951986358-4006919840-1009690842-1000\desktop.ini.tmp

          Filesize

          33KB

          MD5

          69ec2f997c5b3d6c07d361b18b674319

          SHA1

          a500149b3e9771fbe8c654c689c264d69d557e03

          SHA256

          f4361bc0c8e52c27d3b5e8c063a932537b0df5f883eddc752ef6a2b9c7402374

          SHA512

          2944b5aacd3e172f6c1046f5de52c021e523041c59d4c230574293997d9af80ab3c9f050a33b512b34763f85f0f51132fdc779297a63196a29ee032edeed3056

        • C:\e871de07eca81c0a47\2010_x86.log.html.tmp

          Filesize

          113KB

          MD5

          704f11eec3c8a26caecdf92247dc092d

          SHA1

          c266bfec600d6094c87e35a9be16658698f7abe1

          SHA256

          eded191eefc09cde346da2b748448b789136ac14f1eb4b7bacc7b9ddac758b7a

          SHA512

          8a816bc69bfa78acfd96373a255a234f7a79b550767d1cf872ce50b8e6ac940253fcc8c9ddefdde666e6e915d6a379049ff95f57a527db2f226cd33d91419225

        • memory/1040-787-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB