General

  • Target

    (2020) Netwalker.exe

  • Size

    69KB

  • Sample

    241027-q1v8fawlcv

  • MD5

    80372de850597bd9e7e021a94f13f0a1

  • SHA1

    037db820c8dee94ae25a439b758a2b89f527cbb4

  • SHA256

    2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8

  • SHA512

    f43db3569ac60d6ed55b9a3a24dcb459e14b0bd944e9405a8cb2bfb686eaeff31c82ffcd6c477d6a6affe9014ae8ed7d8af174e8ceebbcf00b64ad293901a77a

  • SSDEEP

    1536:juCWRxL7hbUiQfovecnXUU+hhOZuIWiFp+ZfaBZebC33O+Pd71vb:KCWf7VJQfmeMXvkhOZu1iFBBZebC3F7t

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\MF\9DE7C9-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .9de7c9 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_9de7c9: Uj7dxA9+lGmbrUpFv3tRIg92A4lf8uewyrWo5DGTb23jkm5Yf9 53cQi5D/+rRNBCAKbWPhAtvBpi65mbwPsWyQNHmp/oKfBvAg4e DSsr9laHfVKLGO72jbu1sZ8FZZld5/sovIQboHbRa94KCI79EQ tvWhI1pC4wlSw/bLwE1BSeFa/tpAJKBj9TBPLF8uu+du4tS864 Y4PLqtY3bS9Wgrqr2B3kST+L44M4zfQiyuiL2jSZpvgqsMZqzR YOcC+9XvwxZ2vFLCR2EcezPel8k7UhQWgxRbDfdA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\ProgramData\Package Cache\{63880b41-04fc-4f9b-92c4-4455c255eb8c}\2FD520-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2fd520 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_2fd520: 4KyOsro65d8fSqpCLRv5yqB1AmVW+UcbIzWmN4yILtbKBeaDsK mU8h+sc0f58Q2kD59nOJe3+JJ2BDAlLQ3TFtL1q5Vft3hTAg4e DcBB0TrafQKYth4x/Rj7nja9OOO6qXUYsLqPTSQ51YnVPjzq4l 4ZkUnUBC/4p/I0GeTbqYQB9HKyBmK1JzY03Qa+RlFcyiy2VbXz n3nKvb2G5IOWJ3VdFoQFP3xaHhADVOHAJa07aHUhhcd7U2+k6V XnDMxZ8LWeW9jpLcXfbwdlAFFhKQIby/gb9ojM4w==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Targets

    • Target

      (2020) Netwalker.exe

    • Size

      69KB

    • MD5

      80372de850597bd9e7e021a94f13f0a1

    • SHA1

      037db820c8dee94ae25a439b758a2b89f527cbb4

    • SHA256

      2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8

    • SHA512

      f43db3569ac60d6ed55b9a3a24dcb459e14b0bd944e9405a8cb2bfb686eaeff31c82ffcd6c477d6a6affe9014ae8ed7d8af174e8ceebbcf00b64ad293901a77a

    • SSDEEP

      1536:juCWRxL7hbUiQfovecnXUU+hhOZuIWiFp+ZfaBZebC33O+Pd71vb:KCWf7VJQfmeMXvkhOZu1iFBBZebC3F7t

    • Netwalker Ransomware

      Ransomware family with multiple versions. Also known as MailTo.

    • Netwalker family

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (7434) files with added filename extension

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

    • Deletes itself

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

MITRE ATT&CK Enterprise v15

Tasks