General
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Target
2024-03-07_66946f4914dff619a1c4bae465d35fa0_gazer_ryuk
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Size
6.0MB
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Sample
240307-a58fkadd51
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MD5
66946f4914dff619a1c4bae465d35fa0
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SHA1
3642996044cd85381b19f28a9ab6763e2bab653c
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SHA256
7f23383db868ce94c91cc1b6041f6b997fb604d77b2959bb4945632eaf4ee05a
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SHA512
de28c9cce7b4919c710391a525fc1c6a3b391c6b4b03b2b0dad01e42387625fc70a895bd909333d5bf6f5d49f66cadcc2ec630aa02cc94e4c0333c97cbbe8cc6
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SSDEEP
98304:9caoZQU7LgG4PwVIsWE61NQq7vW+WHTemGoMF:9c1uUwfHNQqYTemGoMF
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-07_66946f4914dff619a1c4bae465d35fa0_gazer_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-07_66946f4914dff619a1c4bae465d35fa0_gazer_ryuk.exe
Resource
win10v2004-20240226-en
Malware Config
Extracted
C:\HOW TO BACK FILES.txt
targetcompany
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Targets
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Target
2024-03-07_66946f4914dff619a1c4bae465d35fa0_gazer_ryuk
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Size
6.0MB
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MD5
66946f4914dff619a1c4bae465d35fa0
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SHA1
3642996044cd85381b19f28a9ab6763e2bab653c
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SHA256
7f23383db868ce94c91cc1b6041f6b997fb604d77b2959bb4945632eaf4ee05a
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SHA512
de28c9cce7b4919c710391a525fc1c6a3b391c6b4b03b2b0dad01e42387625fc70a895bd909333d5bf6f5d49f66cadcc2ec630aa02cc94e4c0333c97cbbe8cc6
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SSDEEP
98304:9caoZQU7LgG4PwVIsWE61NQq7vW+WHTemGoMF:9c1uUwfHNQqYTemGoMF
Score10/10-
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 (7145) 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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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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