General
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Target
05193c12562beb5de5f05ae6816c976f.bin
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Size
190KB
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Sample
231213-mcswmacfc4
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MD5
05193c12562beb5de5f05ae6816c976f
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SHA1
2c804f81e6949e2de30359d6085a7eef7b2457e6
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SHA256
ea755384c6e3558710e6bc8833d51e09aff904c76ecfa751895b9948feff726d
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SHA512
9241667e0476e386cbe89f67ae3eb09f4e023283297d567c39956f15497fdf74d1751832116137f11a2e8cb4d073fd3068ecfcc284db6e26263db7059cca60d0
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SSDEEP
3072:t07gIqLEHi+cOtsLpAjPsXp0qCAfs5qtrpJrkG5RScg7:cgIqLKi+cCjPwlCL5qBM
Static task
static1
Behavioral task
behavioral1
Sample
05193c12562beb5de5f05ae6816c976f.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
05193c12562beb5de5f05ae6816c976f.exe
Resource
win10v2004-20231127-en
Malware Config
Extracted
smokeloader
up3
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.hhuy
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offline_id
gG3wF8nDWRqLztkHPAxMzpvNVlmLBMgQKmKiCNt1
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payload_url
http://brusuax.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Targets
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Target
05193c12562beb5de5f05ae6816c976f.bin
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Size
190KB
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MD5
05193c12562beb5de5f05ae6816c976f
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SHA1
2c804f81e6949e2de30359d6085a7eef7b2457e6
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SHA256
ea755384c6e3558710e6bc8833d51e09aff904c76ecfa751895b9948feff726d
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SHA512
9241667e0476e386cbe89f67ae3eb09f4e023283297d567c39956f15497fdf74d1751832116137f11a2e8cb4d073fd3068ecfcc284db6e26263db7059cca60d0
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SSDEEP
3072:t07gIqLEHi+cOtsLpAjPsXp0qCAfs5qtrpJrkG5RScg7:cgIqLKi+cCjPwlCL5qBM
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Detected Djvu ransomware
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Downloads MZ/PE file
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Deletes itself
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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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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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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
File and Directory Permissions Modification
1Modify Registry
2Subvert Trust Controls
1Install Root Certificate
1