General
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Target
SecuriteInfo.com.Win64.RATX-gen.31127.4101.exe
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Size
201KB
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Sample
240307-mdnnasab2t
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MD5
d0d66ae2b9df5d14eff471e5bf5aea41
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SHA1
4a19c5286d1b890eb973a68e171be23939fe9bf4
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SHA256
4292328d0d956ecd1d3ac1de1f21b7e992705276ecb802b4b35242004558a32f
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SHA512
60ceb1d6a4391813c61c44f0e45b5266cd96ca574b2150c4b3df6813c7e8e617e4a72e6742422817d89d45b33d05efcf2d8232bcb24ce66aa4c369083d586010
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SSDEEP
3072:Nhp3Nruv035OpwX+cF1RY0dK9yi04SZrlcHNjOR0KUeI7RUj5CNLuxz6zNh2PpGZ:Nhp3/0pYvdiacHNk0RK52KMz/l
Static task
static1
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Win64.RATX-gen.31127.4101.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Win64.RATX-gen.31127.4101.exe
Resource
win10v2004-20240226-en
Malware Config
Extracted
\Device\HarddiskVolume1\HOW TO BACK FILES.txt
targetcompany
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Extracted
C:\Users\Admin\Contacts\HOW TO BACK FILES.txt
targetcompany
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Targets
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Target
SecuriteInfo.com.Win64.RATX-gen.31127.4101.exe
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Size
201KB
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MD5
d0d66ae2b9df5d14eff471e5bf5aea41
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SHA1
4a19c5286d1b890eb973a68e171be23939fe9bf4
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SHA256
4292328d0d956ecd1d3ac1de1f21b7e992705276ecb802b4b35242004558a32f
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SHA512
60ceb1d6a4391813c61c44f0e45b5266cd96ca574b2150c4b3df6813c7e8e617e4a72e6742422817d89d45b33d05efcf2d8232bcb24ce66aa4c369083d586010
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SSDEEP
3072:Nhp3Nruv035OpwX+cF1RY0dK9yi04SZrlcHNjOR0KUeI7RUj5CNLuxz6zNh2PpGZ:Nhp3/0pYvdiacHNk0RK52KMz/l
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Detect ZGRat V1
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TargetCompany,Mallox
TargetCompany (aka Mallox) is a ransomware which encrypts files using a combination of ChaCha20, AES-128, and Curve25519, first seen in June 2021.
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Modifies boot configuration data using bcdedit
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Renames multiple (7240) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Modifies file permissions
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Adds Run key to start application
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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