General
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Target
8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb
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Size
820KB
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Sample
211205-hsx33acahn
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MD5
b5ca9daea9f2375c8ef81e9d5d4a87e4
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SHA1
a57d402443d1b3e817d9399a15dfb35a70841065
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SHA256
8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb
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SHA512
ae3baa733a43d1f67af366d87ce0aa8ea96c33bcbe6d0351a969513ed2ad9f637b1f867d43cd42d6c15a4f55187b7fa947100d55d6b68a4a95986a9824ee228a
Malware Config
Extracted
djvu
http://tzgl.org/fhsgtsspen6/get.php
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extension
.wnlu
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offline_id
gYuqQ5GsAaJom08TivUVhlPzZDKd916x4NcXrWt1
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payload_url
http://kotob.top/dl/build2.exe
http://tzgl.org/files/1/build3.exe
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ransomnote
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Extracted
vidar
48.9
517
https://qoto.org/@mniami
https://noc.social/@menaomi
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profile_id
517
Targets
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Target
8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb
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Size
820KB
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MD5
b5ca9daea9f2375c8ef81e9d5d4a87e4
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SHA1
a57d402443d1b3e817d9399a15dfb35a70841065
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SHA256
8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb
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SHA512
ae3baa733a43d1f67af366d87ce0aa8ea96c33bcbe6d0351a969513ed2ad9f637b1f867d43cd42d6c15a4f55187b7fa947100d55d6b68a4a95986a9824ee228a
Score10/10-
Detected Djvu ransomware
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Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Vidar
Vidar is an infostealer based on Arkei stealer.
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suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
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suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
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suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
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suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
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Vidar Stealer
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Downloads MZ/PE file
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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 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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Suspicious use of SetThreadContext
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