Analysis

  • max time kernel
    149s
  • max time network
    135s
  • 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

    11e007332adab7424f3a426adc7480052bdd01f1de0eb110d8a07059abfc78c8.exe

  • Size

    21KB

  • MD5

    2d1a6de4acdbf6a428a07c6b66663cc2

  • SHA1

    81ba1ce1603a648e4ef1a24f6fd6fe04fe5d349f

  • SHA256

    11e007332adab7424f3a426adc7480052bdd01f1de0eb110d8a07059abfc78c8

  • SHA512

    4120a96aa7cdb491f9db61508b4f4ad63213d7dff822d92bb2a8a4850819b3cb98ee8b542d1c40108388fabb7c929c0c2877a10044436fd84865d5a88f0ad61b

  • SSDEEP

    384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOCNtQNt80u/M0u/r7:uZ4FLz8ae+rOn8ae+rOCjQjYIr7

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 (5205) 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\11e007332adab7424f3a426adc7480052bdd01f1de0eb110d8a07059abfc78c8.exe
    "C:\Users\Admin\AppData\Local\Temp\11e007332adab7424f3a426adc7480052bdd01f1de0eb110d8a07059abfc78c8.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4792

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\$Recycle.Bin\S-1-5-21-3623617754-4043701611-775564599-1000\desktop.ini.tmp

          Filesize

          21KB

          MD5

          4925797e22222ae856fe0bf3ba5dc4a3

          SHA1

          d5de644b41d108d756192626e2866b2a46238e30

          SHA256

          22b48e035c55d576f19faf735c157e2fb019a8a0e338dbe3c6001469a66432ff

          SHA512

          55334399812c3163919e98b81bcce1c5aa7ca8f23082e018b473a75ce99962882c8fbea32ec972c7f0e25560178d786e3f4a2296c7192cee0890715a6edcd3e3

        • C:\b96a7bef2438b67e1aee\2010_x86.log.html.tmp

          Filesize

          102KB

          MD5

          72d468cdd03c59512884da95f81b84d1

          SHA1

          922dc4c09c20e58bfb3663e72bc09f5ea7d6fd3b

          SHA256

          fbde055378ef113082bb951c4eb05a63d6e957ad6aefad4ec46698c1b90b54c7

          SHA512

          0cf4b683c8a45776e54a322c8f7efccce077838bd22ef1caa687fcf6f5288f9a04741d0d531f32bb626f2058399d545fb17dc5796755f4ac2a5567817a8c65ab

        • memory/4792-801-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB