General
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Target
2024-05-15_759444e3c79e8f7662457b4bd662feb0_gazer_ryuk
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Size
6.1MB
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Sample
240515-mh4kbadc87
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MD5
759444e3c79e8f7662457b4bd662feb0
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SHA1
c966bcfe7f2704c3507c56b8336ea4d0878b1123
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SHA256
f17ee95e3e9843832c7e27a03dac5db605bcb1624d885005287ee900834491b2
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SHA512
0901aaf04b352c7a001eed1da343caf17d96559518111d91d0fce4c3b3cbc736a3b8203907b6790085344bfa4a34c3da698d18beed5334467dec4231ef5aba1e
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SSDEEP
49152:mkB988jwQmEcgxFF7q22WJxdyKv8ySStzKb/3k2OSaLCvE55pCx2WampGjnRzNvo:VFNdPSSE/AL5pCx2HmpGjnRzNv3
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-15_759444e3c79e8f7662457b4bd662feb0_gazer_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-15_759444e3c79e8f7662457b4bd662feb0_gazer_ryuk.exe
Resource
win10v2004-20240508-en
Malware Config
Extracted
\Device\HarddiskVolume1\HOW TO BACK FILES.txt
targetcompany
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Extracted
\Device\HarddiskVolume1\HOW TO BACK FILES.txt
targetcompany
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Targets
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Target
2024-05-15_759444e3c79e8f7662457b4bd662feb0_gazer_ryuk
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Size
6.1MB
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MD5
759444e3c79e8f7662457b4bd662feb0
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SHA1
c966bcfe7f2704c3507c56b8336ea4d0878b1123
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SHA256
f17ee95e3e9843832c7e27a03dac5db605bcb1624d885005287ee900834491b2
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SHA512
0901aaf04b352c7a001eed1da343caf17d96559518111d91d0fce4c3b3cbc736a3b8203907b6790085344bfa4a34c3da698d18beed5334467dec4231ef5aba1e
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SSDEEP
49152:mkB988jwQmEcgxFF7q22WJxdyKv8ySStzKb/3k2OSaLCvE55pCx2WampGjnRzNvo:VFNdPSSE/AL5pCx2HmpGjnRzNv3
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 (7269) 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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