Resubmissions
19-03-2022 08:22
220319-j9qwraech8 1019-03-2022 08:21
220319-j84ffseebn 616-03-2022 15:34
220316-sz9qjsfba4 1017-02-2022 18:50
220217-xhdn1aedap 1017-02-2022 13:21
220217-ql2rnsbbf7 1017-02-2022 13:20
220217-qljwvscdar 117-02-2022 13:20
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220217-qkv8hacdap 117-02-2022 12:49
220217-p2gwrscchl 1017-02-2022 08:03
220217-jxx5ascaan 1General
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Target
important.exe
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Size
3.4MB
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Sample
211019-ejmzysfbg8
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MD5
84c82835a5d21bbcf75a61706d8ab549
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SHA1
5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
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SHA256
ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
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SHA512
90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244
Static task
static1
Behavioral task
behavioral1
Sample
important.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
important.exe
Resource
win11
Behavioral task
behavioral3
Sample
important.exe
Resource
win10-en-20210920
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94
Extracted
C:\Users\Admin\AppData\Local\Temp\@[email protected]
wannacry
115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn
Targets
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Target
important.exe
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Size
3.4MB
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MD5
84c82835a5d21bbcf75a61706d8ab549
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SHA1
5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
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SHA256
ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
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SHA512
90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244
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Registers COM server for autorun
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Downloads MZ/PE file
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Executes dropped EXE
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Sets service image path in registry
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Deletes itself
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Drops startup file
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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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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v6
Defense Evasion
Disabling Security Tools
2File Deletion
2File and Directory Permissions Modification
1Hidden Files and Directories
1Modify Registry
6