General
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Target
64878996b8437be6c86ae7dcd9d0adebb4e226a19b743b8b4ec6d3a7801af0fc
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Size
752KB
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Sample
230216-w76kmsbb38
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MD5
63fac9ba33bfbc492f9e1aba79007207
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SHA1
ef71219fd3128648edce1774cbce9f25d6d348a7
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SHA256
64878996b8437be6c86ae7dcd9d0adebb4e226a19b743b8b4ec6d3a7801af0fc
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SHA512
fbdbf6d9b016d3445a0eaccf8c47684381decc2588173cf2b846baf7f6693a2fa14f3e997652001eb553ef231e34411898a592c6d506467eeb90698ca00c7bad
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SSDEEP
12288:69KDWdlxnGw3GLPdjDfXmPYX9MF0zJaZbVKNlDyqaycXrvNxPq3w:66ih13yV/4/FsJsKNsAYJxPq3w
Static task
static1
Behavioral task
behavioral1
Sample
64878996b8437be6c86ae7dcd9d0adebb4e226a19b743b8b4ec6d3a7801af0fc.exe
Resource
win10v2004-20220901-en
Malware Config
Extracted
djvu
http://bihsy.com/test1/get.php
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extension
.hhmm
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offline_id
dMMXkgwQTycP13C5xwPbHDSzhx1ZxiPgIMZXewt1
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payload_url
http://uaery.top/dl/build2.exe
http://bihsy.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
2.5
19
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profile_id
19
Targets
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Target
64878996b8437be6c86ae7dcd9d0adebb4e226a19b743b8b4ec6d3a7801af0fc
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Size
752KB
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MD5
63fac9ba33bfbc492f9e1aba79007207
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SHA1
ef71219fd3128648edce1774cbce9f25d6d348a7
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SHA256
64878996b8437be6c86ae7dcd9d0adebb4e226a19b743b8b4ec6d3a7801af0fc
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SHA512
fbdbf6d9b016d3445a0eaccf8c47684381decc2588173cf2b846baf7f6693a2fa14f3e997652001eb553ef231e34411898a592c6d506467eeb90698ca00c7bad
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SSDEEP
12288:69KDWdlxnGw3GLPdjDfXmPYX9MF0zJaZbVKNlDyqaycXrvNxPq3w:66ih13yV/4/FsJsKNsAYJxPq3w
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Detected Djvu ransomware
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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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Loads dropped DLL
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Modifies file permissions
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Accesses cryptocurrency files/wallets, possible credential harvesting
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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