Analysis
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max time kernel
113s -
max time network
140s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
31-08-2021 11:41
General
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Target
de04d2402154f676f757cf1380671f396f3fc9f7dbb683d9461edd2718c4e09d.exe
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Size
94KB
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MD5
993b73d6490bc5a7e23e02210b317247
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SHA1
6fd314af34409e945504e166eb8cd88127c1070e
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SHA256
de04d2402154f676f757cf1380671f396f3fc9f7dbb683d9461edd2718c4e09d
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SHA512
417f55a066896695ce1b8d998767f706005d3d6f1792f2b86261a235034a6c3bb1deae6920857fbc710d22b833479b2cbeafd92735381f1cc357adcc8a74c55d
Score
10/10
Malware Config
Extracted
Path
C:\Program Files\Microsoft Office\Office14\64EEB-Readme.txt
Family
netwalker
Ransom Note
Hi!
Your files are encrypted.
All encrypted files for this computer has extension: .64eeb
--
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 and even god will not be able to help you,
it could be files on the network belonging to other users, sure you want to take that responsibility?
--
Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help.
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 decrypt program, you may damage them and then they will be impossible to recover.
We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned.
For us this is just business and to prove to you our seriousness, we will decrypt you some files for free,
but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision.
Contact us:
[email protected]
[email protected]
Don't forget to include your code in the email:
{code_1b1ea859_64eeb:
oMH56M9avCLh6grRFhL604rTmpos46suiylBLhoiKV2Zr4n0bm
pQSddEA3Qk7M6IbH7jby3PsTlFqRmQGgBeFSXwnm3WX38eWage
G8QcMcndUm30ttR5mTCr2EcsHV5HeRiFVqdH4gEkJw2SfZwJHv
rKQVU5UE6UacmwJvc7gmpLQSsp7aG13puYGCJfO9W5ICPwtYrb
szQgQEHNmN7BxtRaruat8g/po8uOdyl7YFxCOWmdSMkUhvjQGE
m28BcEq9dhR7NKeVIVxHkt4ylvXVVr6KI=}
Extracted
Path
C:\Program Files\7-Zip\Lang\64EEB-Readme.txt
Family
netwalker
Ransom Note
Hi!
Your files are encrypted.
All encrypted files for this computer has extension: .64eeb
--
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 and even god will not be able to help you,
it could be files on the network belonging to other users, sure you want to take that responsibility?
--
Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help.
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 decrypt program, you may damage them and then they will be impossible to recover.
We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned.
For us this is just business and to prove to you our seriousness, we will decrypt you some files for free,
but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision.
Contact us:
[email protected]
[email protected]
Don't forget to include your code in the email:
{code_1b1ea859_64eeb:
oMH56M9avCLh6grRFhL604rTmpos46suiylBLhoiKV2Zr4n0bm
pQSddEA3Qk7M6IbH7jby3PsTlFqRmQGgBeFSXwnm3WX38eWage
G8QcMcndUm30ttR5mTCr2EcsHV5HeRiFVqdH4gEkJw2SfZwJHv
rKQVU5UE6UacmwJvc7gmpLQSsp7aG13puYGCJfO9W5ICPwtYrb
szQgQEHNmN7BxtRaruat8g/po8uOdyl7YFxCOWmdSMkUhvjQGE
m28BcEq9dhR7NKeVIVxHkt4ylvXVVr6KI=}Hi!
Your files are encrypted.
All encrypted files for this computer has extension: .64eeb
--
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 and even god will not be able to help you,
it could be files on the network belonging to other users, sure you want to take that responsibility?
--
Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help.
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 decrypt program, you may damage them and then they will be impossible to recover.
We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned.
For us this is just business and to prove to you our seriousness, we will decrypt you some files for free,
but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision.
Contact us:
[email protected]
[email protected]
Don't forget to include your code in the email:
{code_1b1ea859_64eeb:
oMH56M9avCLh6grRFhL604rTmpos46suiylBLhoiKV2Zr4n0bm
pQSddEA3Qk7M6IbH7jby3PsTlFqRmQGgBeFSXwnm3WX38eWage
G8QcMcndUm30ttR5mTCr2EcsHV5HeRiFVqdH4gEkJw2SfZwJHv
rKQVU5UE6UacmwJvc7gmpLQSsp7aG13puYGCJfO9W5ICPwtYrb
szQgQEHNmN7BxtRaruat8g/po8uOdyl7YFxCOWmdSMkUhvjQGE
m28BcEq9dhR7NKeVIVxHkt4ylvXVVr6KI=}
Signatures
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Detected Netwalker Ransomware 2 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 1 IoCs
Ransomware generally changes the extension on encrypted files.
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Deletes itself 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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Suspicious use of SetThreadContext 2 IoCs
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Drops file in Program Files directory 64 IoCs
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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious behavior: MapViewOfSection 2 IoCs
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Suspicious use of AdjustPrivilegeToken 6 IoCs
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Suspicious use of WriteProcessMemory 20 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\de04d2402154f676f757cf1380671f396f3fc9f7dbb683d9461edd2718c4e09d.exe"C:\Users\Admin\AppData\Local\Temp\de04d2402154f676f757cf1380671f396f3fc9f7dbb683d9461edd2718c4e09d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\system32\explorer.exe"2⤵
- Modifies extensions of user files
- Deletes itself
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\system32\explorer.exe"3⤵
- 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 /quiet4⤵
- Interacts with shadow copies
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C:\Windows\SysWOW64\notepad.exeC:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\64EEB-Readme.txt"3⤵
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C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
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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
706a12b01469bbab745b7f448708118b
SHA1ba5c5b0625424eb5d8b98fe7a016d1292a6e2ab0
SHA25617d0a81b10a6954dae6532efa5588d5065033ba1ad59b5c2170a0816da7b438d
SHA512ab0c752ea1b9d78b069b1ec12f11db1b69f52ad410267411f2f30de9f26199619489176dfbf02969346f08b9b7ea4d82b54c40121849ba2ef2003388b80481fc
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Filesize
8KB
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Filesize
8KB
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Filesize
108KB
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Filesize
108KB
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