Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
16-06-2024 00:50
Behavioral task
behavioral1
Sample
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
Resource
win10v2004-20240611-en
General
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Target
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
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Size
1.1MB
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MD5
5230bc2f8f129c1cdcaa87821ef38b6d
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SHA1
94c4e81a6d6ed0bc98ed7448cf60c3d2142ef32e
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SHA256
cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e
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SHA512
817b0ce33b9c4f1f944048f10226295664636ddce01190041c7660652ab054b6fb43a940c4d39ee06ac7ba0dc57b47ba9e0e757aa83dce1c07ab38afed8d1663
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SSDEEP
24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8WWQHUq7:F0dwAYZt6C31WeTVRPOhW7Uq7
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.watz
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offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
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ransomnote
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Signatures
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Detected Djvu ransomware 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\c43ab859-df89-4d2d-86de-46dcacbcd191\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c43ab859-df89-4d2d-86de-46dcacbcd191\\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe\" --AutoStart" 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 3 api.2ip.ua 7 api.2ip.ua -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exepid process 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 2672 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 2672 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exedescription pid process target process PID 2044 wrote to memory of 2280 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe icacls.exe PID 2044 wrote to memory of 2280 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe icacls.exe PID 2044 wrote to memory of 2280 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe icacls.exe PID 2044 wrote to memory of 2280 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe icacls.exe PID 2044 wrote to memory of 2672 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe PID 2044 wrote to memory of 2672 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe PID 2044 wrote to memory of 2672 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe PID 2044 wrote to memory of 2672 2044 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe 567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe"C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c43ab859-df89-4d2d-86de-46dcacbcd191" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe"C:\Users\Admin\AppData\Local\Temp\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exe" --Admin IsNotAutoStart IsNotTask2⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\c43ab859-df89-4d2d-86de-46dcacbcd191\567ed29376b1cdfc820544d6d8e38d58187476a0b911226d5cb8e95f69dcba6f_dump.exeFilesize
1.1MB
MD55230bc2f8f129c1cdcaa87821ef38b6d
SHA194c4e81a6d6ed0bc98ed7448cf60c3d2142ef32e
SHA256cbeb7eeb2ba0e370efa87676217c68f0de0067a465d4d0b422d78ddb3168ec1e
SHA512817b0ce33b9c4f1f944048f10226295664636ddce01190041c7660652ab054b6fb43a940c4d39ee06ac7ba0dc57b47ba9e0e757aa83dce1c07ab38afed8d1663