General
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Target
Computer Raper.exe
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Size
85.4MB
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Sample
240410-td2cqadc92
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MD5
bdb24ed9f869fcd462b316148514fc5b
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SHA1
83935122b626378a3149e9036cd751514add4b52
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SHA256
83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0
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SHA512
12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611
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SSDEEP
1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97
Static task
static1
Malware Config
Extracted
C:\g1rFryAhrVg2xrt\DECRYPT_YOUR_FILES.HTML
Targets
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Target
Computer Raper.exe
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Size
85.4MB
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MD5
bdb24ed9f869fcd462b316148514fc5b
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SHA1
83935122b626378a3149e9036cd751514add4b52
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SHA256
83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0
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SHA512
12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611
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SSDEEP
1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97
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BadRabbit
Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
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Chimera
Ransomware which infects local and network files, often distributed via Dropbox links.
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Chimera Ransomware Loader DLL
Drops/unpacks executable file which resembles Chimera's Loader.dll.
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Dharma
Dharma is a ransomware that uses security software installation to hide malicious activities.
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Renames multiple (382) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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mimikatz is an open source tool to dump credentials on Windows
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Contacts a large (1111) amount of remote hosts
This may indicate a network scan to discover remotely running services.
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Modifies Windows Firewall
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Drops startup 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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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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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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Modifies WinLogon
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Defense Evasion
File and Directory Permissions Modification
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify System Firewall
1Indicator Removal
2File Deletion
2Modify Registry
7Pre-OS Boot
1Bootkit
1