General
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Target
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1.exe
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Size
239KB
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Sample
240306-crzydagd7y
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MD5
ec67029dba040a8a3f98bda4601089a6
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SHA1
f84940be8b8d6e729cf83c6778170bcf2e833926
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SHA256
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1
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SHA512
547aa205b14a928002660d12ad2a4e7d6dd4b2d78a23e97d769ff4be784fee7b73d4a9e5a34bd630971fdecdc1da58b6672dbc9e33a509c8815cf504f1121927
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SSDEEP
3072:SabbbkSEETZKcDDdgkrlG7Ell/1nYldm5+Xz:HxRZZgkBG7Cp1nwX
Static task
static1
Behavioral task
behavioral1
Sample
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1.exe
Resource
win10v2004-20240226-en
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2022
http://trad-einmyus.com/index.php
http://tradein-myus.com/index.php
http://trade-inmyus.com/index.php
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.wisz
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offline_id
4p0Nzrg1q0ND5of5Gtp2UBjthSXuE8VxnMrd4vt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Targets
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Target
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1.exe
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Size
239KB
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MD5
ec67029dba040a8a3f98bda4601089a6
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SHA1
f84940be8b8d6e729cf83c6778170bcf2e833926
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SHA256
50a6f0570275eb30db27eee0f78bcb07a48dcfd2ce9a9399b258114dc23c68a1
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SHA512
547aa205b14a928002660d12ad2a4e7d6dd4b2d78a23e97d769ff4be784fee7b73d4a9e5a34bd630971fdecdc1da58b6672dbc9e33a509c8815cf504f1121927
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SSDEEP
3072:SabbbkSEETZKcDDdgkrlG7Ell/1nYldm5+Xz:HxRZZgkBG7Cp1nwX
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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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Deletes itself
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Executes dropped EXE
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Modifies file permissions
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Adds Run key to start application
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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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