General
- Target 2025-01-28_2e2f5fe8aba42ba7a4eb972e201be179_mailto
- Size 69KB
- Sample250128-bt2djssmbv
- SHA256 60deeaf4df6f3ca05f445a72664c95dd6aa66584716253f7b86cef516e13016a
- MD5 2e2f5fe8aba42ba7a4eb972e201be179
- SHA1 5be60349686e59140f33a071c80405da8952ad30
- SHA512 4039fd176206f7879a80aa9eaa0a338ac0f845ba1b446966c7577d367149f3163526aea143e5c68ed45ee6a22080431304a134b408464479c1b9140ab523db54
- SSDEEP 1536:4xa8XQ408kLUiQKovO5bGU+hhOZuIWcz46ZOtByKbCKrQQipc:oa8XK8yJQKmO5bZkhOZu1cziByKbCk/
- MD5 SHA1 SHA512 SSDEEP
Behavioral task
behavioral1
Sample
2025-01-28_2e2f5fe8aba42ba7a4eb972e201be179_mailto.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-28_2e2f5fe8aba42ba7a4eb972e201be179_mailto.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
-
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\A4D0B4-Readme.txt
-
netwalker
- Hi! Your files are encrypted. All encrypted files for this computer has extension: .a4d0b4 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_a4d0b4: SCLvdvoA1y6R8ioWYO5A5MxRXWdstYL/77VC1EaKE9/95mocOh gUvOo5cMdFoPD6w5NTtCq7RPbwRoPm8x8waYcg84b/8G4MjQc1 +CDlB+AhjnJTxWPkB488nCFBQI0UcBY+AggTXGQUbZK1tlwFQg 3/DEWb9bqOOAi8dJe6PDeypNqPjIsgLkhdraW7ePXvbyR6ON3O Tsqh5So53s6SgzCUA3y12aymxUMwXs2Nt0ayo/XAEC98rt/zWs +OW2k+Hmr7/hlTVih0kaC84v2Etn5lIEb0yQ+evg==}
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http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion
-
http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
Extracted
-
C:\Users\Public\Libraries\58C38E-Readme.txt
-
netwalker
- Hi! Your files are encrypted. All encrypted files for this computer has extension: .58c38e -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_58c38e: V6q2kFWVUkpjYLVTpUpbnVI2FkC9pJQi03JtLTwdDV++LxmEPK dNy6HFYaHLk7dGynLZMPQaeB6OECrsIXoRp5P8aP7o8FczjQc1 +Arf9QMVe2TLJbiPQq1Jaf2tOMn2BNEd5FXaEfcLOAsF8BLwPn J8JHYg4yhqlnxoXOVQOSmg0kn1paCFXZJqsrv8fEFGcf6arsp3 BCTAhVTBPwEvbkjGNVNPjcA7hWCNgg5B1IEV0ExdMAQzKz60FR Sy6sbsAHdRii6/5SRjp3ECi0Z7R4tuHyRbV5GKtQ==}
-
http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion
-
http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
Targets
-
- Target 2025-01-28_2e2f5fe8aba42ba7a4eb972e201be179_mailto
- Size 69KB
- SHA256 60deeaf4df6f3ca05f445a72664c95dd6aa66584716253f7b86cef516e13016a
- MD5 2e2f5fe8aba42ba7a4eb972e201be179
- SHA1 5be60349686e59140f33a071c80405da8952ad30
- SHA512 4039fd176206f7879a80aa9eaa0a338ac0f845ba1b446966c7577d367149f3163526aea143e5c68ed45ee6a22080431304a134b408464479c1b9140ab523db54
- SSDEEP 1536:4xa8XQ408kLUiQKovO5bGU+hhOZuIWcz46ZOtByKbCKrQQipc:oa8XK8yJQKmO5bZkhOZu1cziByKbCk/
- MD5 SHA1 SHA512 SSDEEP
-
Netwalker Ransomware
Ransomware family with multiple versions. Also known as MailTo.
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Netwalker family
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (7442) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes itself