General
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Target
a00fd43badf7a297c8fdf1e48ec2b0ac95aa1c9985e4ed2f4ff1202cd0e72530
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Size
738KB
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Sample
230619-kzc3kscg82
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MD5
40923421b0cb3d946eb9323472b47a20
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SHA1
0d174437b3e2149eff563677c2564febcfab3b78
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SHA256
a00fd43badf7a297c8fdf1e48ec2b0ac95aa1c9985e4ed2f4ff1202cd0e72530
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SHA512
87164b97b71548b772c93bf27192f9247819f2546f7411118efa58513691487539aec08c26003dd9942cb3e3389438c820e3cb6c59aba1d20504d153092b5d75
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SSDEEP
12288:KUM7XmTz5Dz+b8KFbeatQjs2F7ZDqk0vr5UV6Xx22FLbN2ex7:KUjz5ObeESsW5/0vl6sx2sN2eZ
Static task
static1
Behavioral task
behavioral1
Sample
a00fd43badf7a297c8fdf1e48ec2b0ac95aa1c9985e4ed2f4ff1202cd0e72530.exe
Resource
win10-20230220-en
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.ahtw
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offline_id
vPWUuYIO6Lzy2cGt8zL7FERKTf4QMBPjn7F005t1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Extracted
vidar
4.3
a129a8292a021d62796bfced1018aa1f
https://steamcommunity.com/profiles/76561199514261168
https://t.me/kamaprimo
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profile_id_v2
a129a8292a021d62796bfced1018aa1f
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user_agent
Mozilla/5.0 (Linux; U; Tizen 2.0; en-us) AppleWebKit/537.1 (KHTML, like Gecko) Mobile TizenBrowser/2.0
Targets
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Target
a00fd43badf7a297c8fdf1e48ec2b0ac95aa1c9985e4ed2f4ff1202cd0e72530
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Size
738KB
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MD5
40923421b0cb3d946eb9323472b47a20
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SHA1
0d174437b3e2149eff563677c2564febcfab3b78
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SHA256
a00fd43badf7a297c8fdf1e48ec2b0ac95aa1c9985e4ed2f4ff1202cd0e72530
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SHA512
87164b97b71548b772c93bf27192f9247819f2546f7411118efa58513691487539aec08c26003dd9942cb3e3389438c820e3cb6c59aba1d20504d153092b5d75
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SSDEEP
12288:KUM7XmTz5Dz+b8KFbeatQjs2F7ZDqk0vr5UV6Xx22FLbN2ex7:KUjz5ObeESsW5/0vl6sx2sN2eZ
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Detected Djvu ransomware
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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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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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