Analysis
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max time kernel
151s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
20-07-2022 03:21
Static task
static1
Behavioral task
behavioral1
Sample
c130f2f25837763dfa434515da012899.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
c130f2f25837763dfa434515da012899.dll
Resource
win10v2004-20220414-en
General
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Target
c130f2f25837763dfa434515da012899.dll
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Size
5.0MB
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MD5
c130f2f25837763dfa434515da012899
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SHA1
d945495370cff499276c5df54b9a6b43cb796ed0
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SHA256
66548a8697f332940ab65a1132538d05b7336a5d36b80c91092d134dd9fb4993
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SHA512
92d7d8a1e928b9ac607bfa40378b38d3f9ca51722b3fa9aad63b6c969b84679c6e5d2a24bfbe88a4f31064ef13c1ea13e9342940bc7e7d08a05dddf2c6b00529
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1163) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Executes dropped EXE 2 IoCs
Processes:
mssecsvr.exemssecsvr.exepid process 1812 mssecsvr.exe 1780 mssecsvr.exe -
Drops file in System32 directory 1 IoCs
Processes:
mssecsvr.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvr.exe -
Drops file in Windows directory 2 IoCs
Processes:
mssecsvr.exerundll32.exedescription ioc process File created C:\WINDOWS\tasksche.exe mssecsvr.exe File created C:\WINDOWS\mssecsvr.exe rundll32.exe -
Modifies data under HKEY_USERS 24 IoCs
Processes:
mssecsvr.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecisionTime = d057f78af89bd801 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ca000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadNetworkName = "Network 3" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\3a-5c-1d-0c-23-5f mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A} mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecisionReason = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A8E94B1C-2757-4A54-96B6-334B6EEB242A}\WpadDecision = "0" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\3a-5c-1d-0c-23-5f\WpadDecisionTime = d057f78af89bd801 mssecsvr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1976 wrote to memory of 1952 1976 rundll32.exe rundll32.exe PID 1952 wrote to memory of 1812 1952 rundll32.exe mssecsvr.exe PID 1952 wrote to memory of 1812 1952 rundll32.exe mssecsvr.exe PID 1952 wrote to memory of 1812 1952 rundll32.exe mssecsvr.exe PID 1952 wrote to memory of 1812 1952 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\c130f2f25837763dfa434515da012899.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\c130f2f25837763dfa434515da012899.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD596458f4a3f076ef0935459cf534e78e5
SHA171aaabd5bb6d6022a99a8e6a1935f27ef7ac52af
SHA2565b47d5054953c34f443a521ea4ecb5fe28394ce0aac2410ea9a14274db0b7090
SHA512eda43c7f2ee2cd644e1a21d262040b1fcf5a6895991c86054bcddf5ae5365b2efaee27077c9dbca93b830eec39847d1d09978233da432f856115a1a79aa893a6
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD596458f4a3f076ef0935459cf534e78e5
SHA171aaabd5bb6d6022a99a8e6a1935f27ef7ac52af
SHA2565b47d5054953c34f443a521ea4ecb5fe28394ce0aac2410ea9a14274db0b7090
SHA512eda43c7f2ee2cd644e1a21d262040b1fcf5a6895991c86054bcddf5ae5365b2efaee27077c9dbca93b830eec39847d1d09978233da432f856115a1a79aa893a6
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD596458f4a3f076ef0935459cf534e78e5
SHA171aaabd5bb6d6022a99a8e6a1935f27ef7ac52af
SHA2565b47d5054953c34f443a521ea4ecb5fe28394ce0aac2410ea9a14274db0b7090
SHA512eda43c7f2ee2cd644e1a21d262040b1fcf5a6895991c86054bcddf5ae5365b2efaee27077c9dbca93b830eec39847d1d09978233da432f856115a1a79aa893a6
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memory/1812-56-0x0000000000000000-mapping.dmp
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memory/1952-54-0x0000000000000000-mapping.dmp
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memory/1952-55-0x00000000762D1000-0x00000000762D3000-memory.dmpFilesize
8KB