Analysis
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max time kernel
285s -
max time network
287s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
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submitted
07-01-2024 11:13
General
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Target
ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c.exe
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Size
2.9MB
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MD5
ff8a7dd8b1cb0420dd18810041d172a7
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SHA1
cc166bc3eaa024aac4a2cdc02174ae87fcf47e28
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SHA256
ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c
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SHA512
edac57212b21a8046ab07213bf0ea51d1f3c5c9c539812fb1dffba6663b1f74e137991128f1c3135f4c1ab2ff4b470dcc6563ecae5079546dd1f6dfda210ba60
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SSDEEP
49152:VUzeOdI+NDXIgqUPGPiTgvRZHrn7hQyZ9haNSAXpuNh/RgaJ2wf3:VUzekDpRGaTARZHPhQMCcyYvwwf3
Malware Config
Extracted
blackcat
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enable_network_discovery
true
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enable_self_propagation
true
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enable_set_wallpaper
true
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extension
kh1ftzx
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note_file_name
RECOVER-${EXTENSION}-FILES.txt
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note_full_text
>> What happened? Important files on your network was ENCRYPTED and now they have "${EXTENSION}" extension. In order to recover your files you need to follow instructions below. >> Sensitive Data Sensitive data on your system was DOWNLOADED. If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly. Data includes: - Employees personal data, CVs, DL, SSN. - Complete network map including credentials for local and remote services. - Private financial information including: clients data, bills, budgets, annual reports, bank statements. - Manufacturing documents including: datagrams, schemas, drawings in solidworks format - And more... >> CAUTION DO NOT MODIFY ENCRYPTED FILES YOURSELF. DO NOT USE THIRD PARTY SOFTWARE TO RESTORE YOUR DATA. YOU MAY DAMAGE YOUR FILES, IT WILL RESULT IN PERMANENT DATA LOSS. >> What should I do next? Follow these simple steps to get everything back to normal: 1) Download and install Tor Browser from: https://torproject.org/ 2) Navigate to: http://rfosusl6qdm4zhoqbqnjxaloprld2qz35u77h4aap46rhwkouejsooqd.onion/?access-key=${ACCESS_KEY}
Signatures
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BlackCat
A Rust-based ransomware sold as RaaS first seen in late 2021.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c.exe"C:\Users\Admin\AppData\Local\Temp\ecea6b772742758a2240898ef772ca11aa9d870aec711cffab8994c23044117c.exe"1⤵
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.0MB
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Filesize
64KB
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Filesize
64KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB