General
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Target
koko.exe
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Size
6.9MB
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Sample
240916-p2vgvsycnq
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MD5
4bedf848cbe4b5b7b1af3cd7c4d5db7c
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SHA1
868c500f51222967634dcb705e7ba42d6657abfa
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SHA256
c6d52bd7c0aaadc67bcf433212a04ec2c470a592fbd11fa58af4a5118cddbac8
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SHA512
e3b0d999be6207035797faf168bf6d4f92a3468cb4592fecb73c2570ad9bdaa1146a4126a4a10ca3ab3fd6346f9fbeb9f5def635748259ec21cd668720fd43ee
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SSDEEP
49152:XC/xZL1qpiEHgA+R9ZafOKD+8PhBwYHd/bXx0P8oYK4dxQ27:
Behavioral task
behavioral1
Sample
koko.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
koko.exe
Resource
win10v2004-20240802-en
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Targets
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Target
koko.exe
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Size
6.9MB
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MD5
4bedf848cbe4b5b7b1af3cd7c4d5db7c
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SHA1
868c500f51222967634dcb705e7ba42d6657abfa
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SHA256
c6d52bd7c0aaadc67bcf433212a04ec2c470a592fbd11fa58af4a5118cddbac8
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SHA512
e3b0d999be6207035797faf168bf6d4f92a3468cb4592fecb73c2570ad9bdaa1146a4126a4a10ca3ab3fd6346f9fbeb9f5def635748259ec21cd668720fd43ee
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SSDEEP
49152:XC/xZL1qpiEHgA+R9ZafOKD+8PhBwYHd/bXx0P8oYK4dxQ27:
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Chaos Ransomware
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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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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Executes dropped EXE
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Drops desktop.ini file(s)
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Sets desktop wallpaper using registry
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