General
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Target
91qsdf.exe
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Size
147KB
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Sample
250119-tle5fsvnbt
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MD5
3c2c0b97e9295c60267c533010ad9253
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SHA1
270ddd75d7880a91c0a0cafaffed4f2757f54770
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SHA256
984d394fb9324130b52cc05e04db17fd6e1743652e3500e8fbc0b28cc06f125c
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SHA512
c6fed2954e05a33d5ef99610b937450043fc61fa0537f9da982e2c0dcac1ee26f734609ed207b12ad8dda31d191af2072c76b9f19ffbaa4a56b09b47a5955914
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SSDEEP
3072:GqJogYkcSNm9V7DQ4loXzHg0cSlm7FzT:Gq2kc4m9tDQ4aX00cWm7F
Behavioral task
behavioral1
Sample
91qsdf.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
91qsdf.exe
Resource
win10v2004-20241007-en
Malware Config
Extracted
C:\xP8S4N9J1.README.txt
Targets
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Target
91qsdf.exe
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Size
147KB
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MD5
3c2c0b97e9295c60267c533010ad9253
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SHA1
270ddd75d7880a91c0a0cafaffed4f2757f54770
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SHA256
984d394fb9324130b52cc05e04db17fd6e1743652e3500e8fbc0b28cc06f125c
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SHA512
c6fed2954e05a33d5ef99610b937450043fc61fa0537f9da982e2c0dcac1ee26f734609ed207b12ad8dda31d191af2072c76b9f19ffbaa4a56b09b47a5955914
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SSDEEP
3072:GqJogYkcSNm9V7DQ4loXzHg0cSlm7FzT:Gq2kc4m9tDQ4aX00cWm7F
Score10/10-
Renames multiple (361) 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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Deletes itself
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Executes dropped EXE
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Loads dropped DLL
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Drops desktop.ini file(s)
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Indicator Removal: File Deletion
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of NtSetInformationThreadHideFromDebugger
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