Analysis

  • max time kernel
    150s
  • max time network
    103s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250502-en
  • resource tags

    arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29/05/2025, 10:04

General

  • Target

    7e70754070a194ddbaeb7bb830aac040f676bc9b2aa1a5022e36c8c97c212da2.exe

  • Size

    152KB

  • MD5

    d3d0b83acb1010b38bd7b4c9c6d2a4c9

  • SHA1

    44af10e830257831f5ea90be0c74fc0b1fa43510

  • SHA256

    7e70754070a194ddbaeb7bb830aac040f676bc9b2aa1a5022e36c8c97c212da2

  • SHA512

    562fc402f086946c40d14ae0a684db35b9f6a7bf24d6d74c17c9a05a194d3f4fabddda0e2f6f24cbadb63f74d5beb9e52933492cbabda128dd665373e7dbb807

  • SSDEEP

    3072:spWpkqcPZkxjRbMl2k7ueySZl/L52hRDdfYh6qtz7wqLTfzv/q:NWNZkxB82k7uRST/2RDdAh5lRLLu

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 (4870) 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\7e70754070a194ddbaeb7bb830aac040f676bc9b2aa1a5022e36c8c97c212da2.exe
    "C:\Users\Admin\AppData\Local\Temp\7e70754070a194ddbaeb7bb830aac040f676bc9b2aa1a5022e36c8c97c212da2.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5628

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-779059454-4269757009-3780780039-1000\desktop.ini.tmp

          Filesize

          153KB

          MD5

          eb4acdc8e275e8b1c4ac6935da483e85

          SHA1

          1052bef5b4be1e18299c9e490cc1f0163dd4515b

          SHA256

          0d5463f0c1142649da66ad332efc11962cb29076cf5f8ccd4db778a46317f508

          SHA512

          d0000f0e14aa70afed58e105bca610953be3d81e35e96cff43cad031e0c15996346e51b1d18c4fc2135574e52633336f24b6928123565b6e9449eb5f350679b1

        • C:\e62b36dd3cccbd0b2c8aefa1fa8db0\2010_x86.log.html.tmp

          Filesize

          234KB

          MD5

          a189d66535fe1a9ee0efc0c675dde9e0

          SHA1

          afa30d62ccd383f941c2f3e9adcd3cb00f83056b

          SHA256

          2c987d74a9d686bc3c733b6e2713a26fc7e6fee45e110b9f2d93703caa563318

          SHA512

          586bc44b0fe5a9fcae7b0e13415ec6893e7d376959bd228eed9a2c4fe3401c2364b799ae792bab45c94312409b6cca8488dccb2b18b7cdcebd3f18e29adcdb82