General

  • Target

    .mc_osn.exe

  • Size

    42KB

  • Sample

    241112-k96smszcja

  • MD5

    6096dec7644520ba1a4fdc04183bb62f

  • SHA1

    f0eae70b15d663787858a5cc24d8fdf21b67f225

  • SHA256

    68dd91e49256ee61ca05a5309db255e9ffe23e8df680ace95d48346e2a39c260

  • SHA512

    3680248b7ef0e7304268fa8b277f5c9d823c82185d0137bfa9d756ce9fb6406b1af0be5f4dfb73199a6ba4b175dbca97ac61600f140043a645279110750c8f05

  • SSDEEP

    768:LO1oR/vVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDdy6vd8lLF82:LlS1FKnDtkuImg61iW2

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailboxes: [email protected] or [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Targets

    • Target

      .mc_osn.exe

    • Size

      42KB

    • MD5

      6096dec7644520ba1a4fdc04183bb62f

    • SHA1

      f0eae70b15d663787858a5cc24d8fdf21b67f225

    • SHA256

      68dd91e49256ee61ca05a5309db255e9ffe23e8df680ace95d48346e2a39c260

    • SHA512

      3680248b7ef0e7304268fa8b277f5c9d823c82185d0137bfa9d756ce9fb6406b1af0be5f4dfb73199a6ba4b175dbca97ac61600f140043a645279110750c8f05

    • SSDEEP

      768:LO1oR/vVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDdy6vd8lLF82:LlS1FKnDtkuImg61iW2

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (2803) files with added filename extension

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

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks