General
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Target
B9B1.exe
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Size
684KB
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Sample
210213-z61mp73vgx
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MD5
7efdbcd2dda98974f89290ce0a02cdc7
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SHA1
cbae61ac09fe75b570bee392aa70310ef4d94362
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SHA256
eb8de87523800e3aa747857a06938f3af3856fbd42be025688e2ff50248ac197
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SHA512
b9d334d10bc4c02007efcdd789a4fb91bffa3790c8d8357f438cd167c86097acc0b6d4889c1b81de77c42e8b7d5f04f3a8dffca80adc2a9148051b68d1215adc
Malware Config
Targets
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Target
B9B1.exe
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Size
684KB
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MD5
7efdbcd2dda98974f89290ce0a02cdc7
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SHA1
cbae61ac09fe75b570bee392aa70310ef4d94362
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SHA256
eb8de87523800e3aa747857a06938f3af3856fbd42be025688e2ff50248ac197
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SHA512
b9d334d10bc4c02007efcdd789a4fb91bffa3790c8d8357f438cd167c86097acc0b6d4889c1b81de77c42e8b7d5f04f3a8dffca80adc2a9148051b68d1215adc
Score10/10-
Deletes Windows Defender Definitions
Uses mpcmdrun utility to delete all AV definitions.
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Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Taurus Stealer
Taurus is an infostealer first seen in June 2020.
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Vidar
Vidar is an infostealer based on Arkei stealer.
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Disables Task Manager via registry modification
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Drops file in Drivers directory
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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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Reads user/profile data of local email clients
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses 2FA software files, possible credential harvesting
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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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Enumerates physical storage devices
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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