General
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Target
WebAdvisorInstall.exe
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Size
5.1MB
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Sample
240828-s4rerswelq
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MD5
be8bf725892ddd7a200d0a1906b9387f
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SHA1
582a24a72b29e70f2de26a8d217492c7a6b983ff
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SHA256
166bba02413995aff28ffeb27d3bf3d5a5f6a6cd36893e252c7b9a22836f4980
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SHA512
32d9d97692255e84cbd8c24794627bdfaa8ae41942bd449b678906f01d8b667d9d9785440f562132878987c682169b8ba9f9242a9f2abdf4b197d425ff1e7cb8
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SSDEEP
98304:MjHm6/Pi0bzB+Ot7nM3wnuZFm0qRttZYtToFbSO7VKoFbSO7VyoFbSO7VKoFbSO5:O5unMkMsMkM
Static task
static1
Behavioral task
behavioral1
Sample
WebAdvisorInstall.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
WebAdvisorInstall.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
WebAdvisorInstall.exe
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Size
5.1MB
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MD5
be8bf725892ddd7a200d0a1906b9387f
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SHA1
582a24a72b29e70f2de26a8d217492c7a6b983ff
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SHA256
166bba02413995aff28ffeb27d3bf3d5a5f6a6cd36893e252c7b9a22836f4980
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SHA512
32d9d97692255e84cbd8c24794627bdfaa8ae41942bd449b678906f01d8b667d9d9785440f562132878987c682169b8ba9f9242a9f2abdf4b197d425ff1e7cb8
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SSDEEP
98304:MjHm6/Pi0bzB+Ot7nM3wnuZFm0qRttZYtToFbSO7VKoFbSO7VyoFbSO7VKoFbSO5:O5unMkMsMkM
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Rule to detect Lockbit 3.0 ransomware Windows payload
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Renames multiple (650) 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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