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 01:40
Static task
static1
Behavioral task
behavioral1
Sample
2259ebf3658c2dd6ab1e53e3c23fad4d.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
2259ebf3658c2dd6ab1e53e3c23fad4d.dll
Resource
win10v2004-20220414-en
General
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Target
2259ebf3658c2dd6ab1e53e3c23fad4d.dll
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Size
5.0MB
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MD5
2259ebf3658c2dd6ab1e53e3c23fad4d
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SHA1
0e1170d4132d995d404b86772cf41b399aa967d4
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SHA256
66f1d8d65c041689a1c05c661794e44bab00a546fac687089bab07a556c859ce
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SHA512
6b2f2ef1eb186923d64f86fb3fe9a08baac2089ec1d405a931c33c1c097692685ab4514aeeb9896ced9497709269120519695c8c26d04575bf26eba3d855aae8
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1123) 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 1612 mssecsvr.exe 1052 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:
rundll32.exemssecsvr.exedescription ioc process File created C:\WINDOWS\mssecsvr.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvr.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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD}\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD}\WpadDecisionTime = 50aaed70ea9bd801 mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD}\WpadNetworkName = "Network 3" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD}\a6-6b-26-6b-84-8e mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-6b-26-6b-84-8e\WpadDecisionReason = "1" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings 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\UNCAsIntranet = "0" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD} mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-6b-26-6b-84-8e\WpadDecisionTime = 50aaed70ea9bd801 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A5A17F7-137A-426E-9AC2-40F809C1E4DD}\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-6b-26-6b-84-8e mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-6b-26-6b-84-8e\WpadDecision = "0" 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\ZoneMap\ mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1172 wrote to memory of 1196 1172 rundll32.exe rundll32.exe PID 1196 wrote to memory of 1612 1196 rundll32.exe mssecsvr.exe PID 1196 wrote to memory of 1612 1196 rundll32.exe mssecsvr.exe PID 1196 wrote to memory of 1612 1196 rundll32.exe mssecsvr.exe PID 1196 wrote to memory of 1612 1196 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2259ebf3658c2dd6ab1e53e3c23fad4d.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1172 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2259ebf3658c2dd6ab1e53e3c23fad4d.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1612
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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:1052
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.6MB
MD550dc06528bc615007083fc5084369964
SHA1c3fe4bc71b70991ab20f50edafd99f0f12448f58
SHA256c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2
SHA512d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab
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Filesize
3.6MB
MD550dc06528bc615007083fc5084369964
SHA1c3fe4bc71b70991ab20f50edafd99f0f12448f58
SHA256c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2
SHA512d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab
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Filesize
3.6MB
MD550dc06528bc615007083fc5084369964
SHA1c3fe4bc71b70991ab20f50edafd99f0f12448f58
SHA256c0f19b6b51913c494055efbd17850e8c195374c4f198323429787ed16e1eb2f2
SHA512d6e33412f1ba1c15931717f702fcab3ca35ac988e53aea37e20fbf6b31876f2cde7b303e0b43e792df2468b3bf3a425f71d4fb5e56e60935f03f5965d1c4beab