Analysis
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max time kernel
109s -
max time network
138s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
26-07-2021 12:59
General
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Target
8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample.exe
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Size
296KB
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MD5
258ed03a6e4d9012f8102c635a5e3dcd
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SHA1
a3bc2a30318f9bd2b51cb57e2022996e7f15c69e
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SHA256
8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160
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SHA512
967414274cb8d8fdf0e4dd446332b37060d54a726ab77f4ec704a5afe12162e098183add4342d1710db1e1c3b74035a001cf4c2d7790a27bf6d8381c34a96889
Score
10/10
Malware Config
Extracted
Path
C:\50C07F-Readme.txt
Family
netwalker
Ransom Note
Hi!
Your files are encrypted by Netwalker.
All encrypted files for this computer has extension: .50c07f
--
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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
3.Put your personal code in the input form:
{code_50c07f:
4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ
/83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj
Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7
paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG
+uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0
6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}
URLs
http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
Extracted
Path
C:\Users\Admin\Downloads\50C07F-Readme.txt
Family
netwalker
Ransom Note
Hi!
Your files are encrypted by Netwalker.
All encrypted files for this computer has extension: .50c07f
--
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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
3.Put your personal code in the input form:
{code_50c07f:
4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ
/83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj
Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7
paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG
+uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0
6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}Hi!
Your files are encrypted by Netwalker.
All encrypted files for this computer has extension: .50c07f
--
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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
3.Put your personal code in the input form:
{code_50c07f:
4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ
/83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj
Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7
paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG
+uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0
6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}
URLs
http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion
Signatures
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Detected Netwalker Ransomware 1 IoCs
Detected unpacked Netwalker executable.
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Netwalker Ransomware
Ransomware family with multiple versions. Also known as MailTo.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 8 IoCs
Ransomware generally changes the extension on encrypted files.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 64 IoCs
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Kills process with taskkill 1 IoCs
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 6 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample.exe"C:\Users\Admin\AppData\Local\Temp\8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample.exe"1⤵
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
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C:\Windows\SysWOW64\notepad.exeC:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\50C07F-Readme.txt"2⤵
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\21FB.tmp.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /PID 32603⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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MD5
c275a4ddb900e03932f1b44640a02cc8
SHA1e95a30bc0e0f492ed10485b46f57b7f95aa50e76
SHA256ad1cc94fd0711396da2f7152207416cc511243d161a34e54d8b769d05923ef6c
SHA512143ca0af3ed4846f9112c957caf6b0c0457a166c7e1335f834b2374974a2d9b106fe59321129031c0712f662c8bad30e3927f184254f423a2810078b58cb0a99
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MD5
6886e622d1d59aa2d25c92659aa7dd63
SHA1733a128f1dd51b65a749fcb994cbb9ba37fb6449
SHA256c16d095fdd30ecf69dea998addb16d792e14e390fcdfb311aa029d0ddd6560c6
SHA5123ca74e985213b8b9aeede5cfe1075c9937d534ead6ddc46a80b08fe61cae1f507821da7d98b9fc6a52830cbca00b158e0eb5b9eb2c2c494196d5a9a62f8ff363
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Filesize
152KB
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Filesize
300KB
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