General
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Target
7447526172.zip
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Size
10KB
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Sample
220520-qkmlcsgdhn
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MD5
97be1a60229d8045096a023d6c9bb086
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SHA1
d366c6b956fd4991b9b0bf970d325a8ec24f74a6
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SHA256
93bc55b5b7bb7651a194acafb39e39c21798eaa0c75fd463be751d76774034e8
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SHA512
39106d69a2b8df5e2d27626c8fcf13c62d841136d459036c9a32ebf47aefd78ad38c9e2e727960a0ae3a379f8036fd23ce6d051f67469d078cff3ca228c87bf8
Static task
static1
Behavioral task
behavioral1
Sample
954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c.exe
Resource
win7-20220414-en
Malware Config
Extracted
C:\Users\Admin\Music\AddApprove.html
ryuk
Targets
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Target
954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c
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Size
22KB
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MD5
a4ac3f1674f24c6e596bf71fc47bd275
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SHA1
24dbe7a81a5bda771d7557fa3f5000f4a9f27179
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SHA256
954d8fcd6b74d76999f9ec033ca855ffdab6595be23039f03bc4c6017fa3932c
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SHA512
d75690b60afbc2999d5f2892b6ee924b902a1497f9820393c78edd64c061908462e98593267836bdab28bb9963fc30b4e780f0c7b5853fd067765e3a6df0bdc7
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Chaos Ransomware
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Modifies boot configuration data using bcdedit
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Executes dropped EXE
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Drops desktop.ini file(s)
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