General
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Target
c23d3534818e4daba25a1fc610f99b0c0cd5713be5cf3e8e8f290c6dadb2f0ab
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Size
840KB
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Sample
211207-xf9cwscdbn
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MD5
1cb01babaff09c3c5e27038f42c257f7
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SHA1
acafec37748aae2ea3c3fd053052efd4a191e035
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SHA256
c23d3534818e4daba25a1fc610f99b0c0cd5713be5cf3e8e8f290c6dadb2f0ab
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SHA512
a82ec489d89a3223ce9e20b01c7afdad238e6920ae6d485947a0f8c35545a741f436980b7d3f5c913bf16ee8a5d689996005097d3dade5d22fd6d905c57e14d2
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
49
517
https://mstdn.social/@sergeev43
https://koyu.space/@sergeev45
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profile_id
517
Targets
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Target
c23d3534818e4daba25a1fc610f99b0c0cd5713be5cf3e8e8f290c6dadb2f0ab
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Size
840KB
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MD5
1cb01babaff09c3c5e27038f42c257f7
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SHA1
acafec37748aae2ea3c3fd053052efd4a191e035
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SHA256
c23d3534818e4daba25a1fc610f99b0c0cd5713be5cf3e8e8f290c6dadb2f0ab
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SHA512
a82ec489d89a3223ce9e20b01c7afdad238e6920ae6d485947a0f8c35545a741f436980b7d3f5c913bf16ee8a5d689996005097d3dade5d22fd6d905c57e14d2
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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