General
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Target
InternalCrossContextDelega.exe
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Size
429KB
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Sample
220114-grf8gsefc9
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MD5
22367699e131a9d98f842a1003fd193a
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SHA1
c275084d65f845b4d957c05b874fade071193468
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SHA256
a7018ff4aaaaebda06615da54ab7d3dcfe06ffda501254eb9654aa27152629bb
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SHA512
26aedfe2eede18f72425f37d57fde838466345187f1df365528b0798a2f323badfbbb4f3b5571c4ea554cdb757dc0b7b2f7c87f5ae88c6e2cee41eaa92b6e828
Static task
static1
Behavioral task
behavioral1
Sample
InternalCrossContextDelega.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
InternalCrossContextDelega.exe
Resource
win10-en-20211208
Malware Config
Extracted
C:\Users\Admin\RECOVERY INFORMATION.txt
Extracted
C:\$Recycle.Bin\RECOVERY INFORMATION.txt
Targets
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Target
InternalCrossContextDelega.exe
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Size
429KB
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MD5
22367699e131a9d98f842a1003fd193a
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SHA1
c275084d65f845b4d957c05b874fade071193468
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SHA256
a7018ff4aaaaebda06615da54ab7d3dcfe06ffda501254eb9654aa27152629bb
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SHA512
26aedfe2eede18f72425f37d57fde838466345187f1df365528b0798a2f323badfbbb4f3b5571c4ea554cdb757dc0b7b2f7c87f5ae88c6e2cee41eaa92b6e828
Score10/10-
TargetCompany
Ransomware which encrypts files using a combination of ChaCha20, AES-128, and Curve25519, first seen in June 2021.
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TargetCompany Payload
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Modifies boot configuration data using bcdedit
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Stops running service(s)
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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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Suspicious use of SetThreadContext
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