Analysis
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max time kernel
187s -
max time network
217s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
24-06-2022 22:24
Static task
static1
Behavioral task
behavioral1
Sample
dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll
Resource
win10v2004-20220414-en
General
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Target
dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll
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Size
5.0MB
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MD5
9572e7085f1cc985e86ee018899e81e5
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SHA1
bba275ac45b152fd7be85d28f4114d59ef1bf6ea
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SHA256
dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359
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SHA512
6729357bcb91922ff800701490a8a56374306d44e0cf7ae6fcad0ef9c6a5bf8747927ad5f7ce899846d575b175185c32d9a37712b13678ec2a80c4c50223e810
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1203) 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 1196 mssecsvr.exe 520 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 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-bb-b8-e8-42-f8\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-bb-b8-e8-42-f8\WpadDecisionTime = 300547b02a88d801 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\Content\CachePrefix mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791} mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791}\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791}\WpadDecisionTime = 300547b02a88d801 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791}\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791}\b2-bb-b8-e8-42-f8 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A1E44E27-A1CE-4157-840E-EAE295251791}\WpadNetworkName = "Network 3" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-bb-b8-e8-42-f8 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-bb-b8-e8-42-f8\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings 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 Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1608 wrote to memory of 1968 1608 rundll32.exe rundll32.exe PID 1968 wrote to memory of 1196 1968 rundll32.exe mssecsvr.exe PID 1968 wrote to memory of 1196 1968 rundll32.exe mssecsvr.exe PID 1968 wrote to memory of 1196 1968 rundll32.exe mssecsvr.exe PID 1968 wrote to memory of 1196 1968 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1608 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1196
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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
PID:520
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD58fcfd6e2a225c65bc72beff47b0d9248
SHA1cca810ab571c4ce407b33def409038570dad1bf2
SHA25674e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f
SHA5122b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD58fcfd6e2a225c65bc72beff47b0d9248
SHA1cca810ab571c4ce407b33def409038570dad1bf2
SHA25674e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f
SHA5122b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD58fcfd6e2a225c65bc72beff47b0d9248
SHA1cca810ab571c4ce407b33def409038570dad1bf2
SHA25674e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f
SHA5122b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e
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memory/1196-56-0x0000000000000000-mapping.dmp
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memory/1968-54-0x0000000000000000-mapping.dmp
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memory/1968-55-0x00000000763E1000-0x00000000763E3000-memory.dmpFilesize
8KB