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 01:32
Static task
static1
Behavioral task
behavioral1
Sample
867a36244ecf57e3b1894fe6b91cd2ce.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
867a36244ecf57e3b1894fe6b91cd2ce.dll
Resource
win10v2004-20220414-en
General
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Target
867a36244ecf57e3b1894fe6b91cd2ce.dll
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Size
5.0MB
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MD5
867a36244ecf57e3b1894fe6b91cd2ce
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SHA1
7ab48690ef8252a062f1974ae177008af744c586
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SHA256
e731a40736374c87eabcacd5826396756b0cf469edf30311fbfe34aeffea5446
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SHA512
75aad2a78fb539b348cc49b09d8848bf2922a115460ebd7670e1d4912bb3dd4d695d71aecdb838cd43b0878489a0af472664d674bc2a582172aa286015473ce3
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1297) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Executes dropped EXE 3 IoCs
Processes:
mssecsvc.exemssecsvc.exetasksche.exepid process 892 mssecsvc.exe 2032 mssecsvc.exe 664 tasksche.exe -
Drops file in System32 directory 1 IoCs
Processes:
mssecsvc.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvc.exe -
Drops file in Windows directory 2 IoCs
Processes:
rundll32.exemssecsvc.exedescription ioc process File created C:\WINDOWS\mssecsvc.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvc.exe -
Modifies data under HKEY_USERS 24 IoCs
Processes:
mssecsvc.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecisionTime = 20304c4fe99bd801 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00be000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF} mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadNetworkName = "Network 3" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\aa-9a-b0-7d-5c-4f mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecision = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecisionTime = 20304c4fe99bd801 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 1036 1876 rundll32.exe rundll32.exe PID 1036 wrote to memory of 892 1036 rundll32.exe mssecsvc.exe PID 1036 wrote to memory of 892 1036 rundll32.exe mssecsvc.exe PID 1036 wrote to memory of 892 1036 rundll32.exe mssecsvc.exe PID 1036 wrote to memory of 892 1036 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\867a36244ecf57e3b1894fe6b91cd2ce.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\867a36244ecf57e3b1894fe6b91cd2ce.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
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C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.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\mssecsvc.exeFilesize
3.6MB
MD5eda979224125226e14430f733500d396
SHA1449eac805d4d6650e2359c659510d3f6d5c8ec10
SHA256345af5d882de7e430fd604456b14d9efa929c72769fd00f78647dda4a2677038
SHA51259875dae0e41aceb54f9918747093748d030ba13b3607b0aadcd63b8bfb2a665c57229ef018bef6fb454d67ed0f21362c7d2bd1e913ef7cd18f1c98192ca3f60
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5eda979224125226e14430f733500d396
SHA1449eac805d4d6650e2359c659510d3f6d5c8ec10
SHA256345af5d882de7e430fd604456b14d9efa929c72769fd00f78647dda4a2677038
SHA51259875dae0e41aceb54f9918747093748d030ba13b3607b0aadcd63b8bfb2a665c57229ef018bef6fb454d67ed0f21362c7d2bd1e913ef7cd18f1c98192ca3f60
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5eda979224125226e14430f733500d396
SHA1449eac805d4d6650e2359c659510d3f6d5c8ec10
SHA256345af5d882de7e430fd604456b14d9efa929c72769fd00f78647dda4a2677038
SHA51259875dae0e41aceb54f9918747093748d030ba13b3607b0aadcd63b8bfb2a665c57229ef018bef6fb454d67ed0f21362c7d2bd1e913ef7cd18f1c98192ca3f60
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5f4eb85b271eae6f15c4a9b13a2e5b752
SHA1b3693583e092709b54b71559b8724025656ac1d4
SHA256362c6c91624f52e3ef36d55d74f7bd7228d5cbf4d676c0d7775f6afb91cecb2d
SHA512863d81575222674b45d6c1f135fb02c9f83a325f5fcb1d5d8eb178539414140979e33ec2159ca0741f12c5d52a0a0f56b796e6b8c5178f22ce3e6a550e652f08
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memory/892-56-0x0000000000000000-mapping.dmp
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memory/1036-54-0x0000000000000000-mapping.dmp
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memory/1036-55-0x0000000075DC1000-0x0000000075DC3000-memory.dmpFilesize
8KB