General
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Target
F-Secure-Safe-Network-Installer.exe
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Size
3.0MB
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Sample
240826-q74s6aycjk
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MD5
9c15aac2f31dd9e1e8d64cf8f04ea5d6
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SHA1
aaeeb05a24f6e7ef77d46ba71794490afbc414ab
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SHA256
e082c6d30278139fdab5a7ddddecbcbafad12ab4dff1d5a960d9704fe635c007
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SHA512
0249416a9a1b526b887007704133166353fa97f9def8e57725092ee61f3bc0f5090238699c47733962495cd64550413acf25ff3086d1617e4440e9b6eba1a975
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SSDEEP
49152:+zk68h1xr/Rq09zUWUus6qidDQjvBJVSq2UCur80qDt5OXqj:+I6Q/Rq09zUWUus6qidE80qDt5OXqj
Static task
static1
Behavioral task
behavioral1
Sample
F-Secure-Safe-Network-Installer.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
F-Secure-Safe-Network-Installer.exe
Resource
win10v2004-20240802-en
Malware Config
Extracted
C:\wlJ8FiR2h.README.txt
lockbit
http://lockbitsupt7nr3fa6e7xyb73lk6bw6rcneqhoyblniiabj4uwvzapqd.onion
http://lockbitsupuhswh4izvoucoxsbnotkmgq6durg7kficg6u33zfvq3oyd.onion
http://lockbitsupn2h6be2cnqpvncyhj4rgmnwn44633hnzzmtxdvjoqlp7yd.onion
http://lockbitsupp.uz
http://lockbitapt2yfbt7lchxejug47kmqvqqxvvjpqkmevv4l3azl3gy6pyd.onion
http://lockbitapt5x4zkjbcqmz6frdhecqqgadevyiwqxukksspnlidyvd7qd.onion
http://lockbitapt6vx57t3eeqjofwgcglmutr3a35nygvokja5uuccip4ykyd.onion
http://lockbitapt34kvrip6xojylohhxrwsvpzdffgs5z4pbbsywnzsbdguqd.onion
http://lockbitaptc2iq4atewz2ise62q63wfktyrl4qtwuk5qax262kgtzjqd.onion
http://lockbitaptjpikdqjynvgozhgc6bgetgucdk5xjacozeaawihmoio6yd.onion
http://lockbitaptq7ephv2oigdncfhtwhpqgwmqojnxqdyhprxxfpcllqdxad.onion
http://lockbitaptstzf3er2lz6ku3xuifafq2yh5lmiqj5ncur6rtlmkteiqd.onion
http://lockbitaptoofrpignlz6dt2wqqc5z3a4evjevoa3eqdfcntxad5lmyd.onion
Targets
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Target
F-Secure-Safe-Network-Installer.exe
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Size
3.0MB
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MD5
9c15aac2f31dd9e1e8d64cf8f04ea5d6
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SHA1
aaeeb05a24f6e7ef77d46ba71794490afbc414ab
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SHA256
e082c6d30278139fdab5a7ddddecbcbafad12ab4dff1d5a960d9704fe635c007
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SHA512
0249416a9a1b526b887007704133166353fa97f9def8e57725092ee61f3bc0f5090238699c47733962495cd64550413acf25ff3086d1617e4440e9b6eba1a975
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SSDEEP
49152:+zk68h1xr/Rq09zUWUus6qidDQjvBJVSq2UCur80qDt5OXqj:+I6Q/Rq09zUWUus6qidE80qDt5OXqj
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Rule to detect Lockbit 3.0 ransomware Windows payload
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Renames multiple (645) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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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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