Analysis

  • max time kernel
    150s
  • max time network
    145s
  • 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

    24f2eb90845e42c7b83d4cc2d690e14e29881d033253741af02d9a10b768b94b.exe

  • Size

    189KB

  • MD5

    cc8e433070ebf256f0eedc4cfd2d94e3

  • SHA1

    78d1cd0ecc0331b96de41e9f04666d300e233d10

  • SHA256

    24f2eb90845e42c7b83d4cc2d690e14e29881d033253741af02d9a10b768b94b

  • SHA512

    75a498572e825a1bb5ebdd50dcc85f269337ff6fdf588b89a543edfcb60dcf904c553b37e65be530bc6d5a751af5f17a5a47024a4a23ae1c4fdd946a94ddbec8

  • SSDEEP

    3072:spWpsBsqrNkMzN0mx7Sr6zBsqrNkMzN0mx7Sr6z:NWB9nPB9n/

Malware Config

Signatures

  • Cosmu

    Cosmu is a Windows worm written in C++.

  • Cosmu family
  • Detects Cosmu payload 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (4691) 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\24f2eb90845e42c7b83d4cc2d690e14e29881d033253741af02d9a10b768b94b.exe
    "C:\Users\Admin\AppData\Local\Temp\24f2eb90845e42c7b83d4cc2d690e14e29881d033253741af02d9a10b768b94b.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5000

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-186956858-2143653872-2609589082-1000\desktop.ini.tmp

          Filesize

          189KB

          MD5

          6513880aedd653d644de4c595b34ed30

          SHA1

          1e3147fec60e2d351805a7f2fa816cddee315650

          SHA256

          bcd2f62b3b12d45bb4651be30b0deec2ef8a85dcc8d1f46ca33b46447e97c7f6

          SHA512

          3289f963dc95dddaa44d10d35df4ca7e6bf3cd2b97c55fdc3c637beb03e0695b4ece018810d8d8e14fac0fcaa86cbd296f22a22ca1235a0cdb5f3b741475b2c7

        • C:\d962f70874f5d4bfc1c6\2010_x64.log.html.tmp

          Filesize

          274KB

          MD5

          355fa9966c6c790fa6e76ca3efe298fa

          SHA1

          b0dc95e4cff6f07c1d91971c308a75d2b7a0968a

          SHA256

          4abc7efb894ee1c44fd838c284d553b58a55f840e7c60f0d68ff0b99e68141d9

          SHA512

          5c33022545f47e8ecd87b5a0efbf80aeb0623928d1cb840719fa303a35a208ced0105fa1ef1ff533934b849bfd255d6b74baf70197fc93dc6034bf79c95879a8