General
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Target
4d5bf2f8020e778b857a3e82e0347af8180125bd90c0a1523a986b02d899d2f9
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Size
780KB
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Sample
230618-n69xnsfb69
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MD5
e1a63ddafed509a1d9fed51bc0488490
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SHA1
9836c621e4a10d9ee1d37cbfa9cfd9151fdb0706
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SHA256
4d5bf2f8020e778b857a3e82e0347af8180125bd90c0a1523a986b02d899d2f9
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SHA512
3926abafd44e686d3122d574766bdd05924f8491e15666e0a72522ef67af8429cc79b2a3b045b1f2221466485bb42a580e5ad76585be65babc12f2dfac2edf60
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SSDEEP
12288:Vq4YTgBlZH+YHdocE5ObI9FfP5kDi/UyBu75G1Lao5:Vq4Y0NH+YScBSFfRch/yLa
Static task
static1
Behavioral task
behavioral1
Sample
4d5bf2f8020e778b857a3e82e0347af8180125bd90c0a1523a986b02d899d2f9.exe
Resource
win10v2004-20230220-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
4d5bf2f8020e778b857a3e82e0347af8180125bd90c0a1523a986b02d899d2f9
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Size
780KB
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MD5
e1a63ddafed509a1d9fed51bc0488490
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SHA1
9836c621e4a10d9ee1d37cbfa9cfd9151fdb0706
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SHA256
4d5bf2f8020e778b857a3e82e0347af8180125bd90c0a1523a986b02d899d2f9
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SHA512
3926abafd44e686d3122d574766bdd05924f8491e15666e0a72522ef67af8429cc79b2a3b045b1f2221466485bb42a580e5ad76585be65babc12f2dfac2edf60
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SSDEEP
12288:Vq4YTgBlZH+YHdocE5ObI9FfP5kDi/UyBu75G1Lao5:Vq4Y0NH+YScBSFfRch/yLa
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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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