General
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Target
https://github.com/Da2dalus/The-MALWARE-Repo.git
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Sample
240820-eyam6stama
Malware Config
Targets
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Target
https://github.com/Da2dalus/The-MALWARE-Repo.git
Score10/10-
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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Modifies visiblity of hidden/system files in Explorer
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Renames multiple (3253) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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Executes dropped EXE
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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UPX packed file
Detects executables packed with UPX/modified UPX open source packer.
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Adds Run key to start application
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Drops desktop.ini file(s)
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Legitimate hosting services abused for malware hosting/C2
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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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Network Share Discovery
Attempt to gather information on host network.
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Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
4Subvert Trust Controls
1SIP and Trust Provider Hijacking
1Discovery
Browser Information Discovery
1Network Share Discovery
1Query Registry
1Remote System Discovery
1System Information Discovery
3System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
1Internet Connection Discovery
1