Analysis
- max time kernel
166s - max time network
189s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system - submitted
12/10/2022, 03:41
Static task
static1
Behavioral task
behavioral1
Sample
495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c.dll
Resource
win7-20220901-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c.dll
Resource
win10v2004-20220812-en
windows10-2004-x64
6 signatures
150 seconds
General
- Target 495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c.dll
- Size 5.0MB
- Sample221012-d8r5jacce3
- SHA256 495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c
- MD5 a51beb6c0ac1650cc9161d77a7b4ffe4
- SHA1 140e7d3e026ed3e9372630792966943cafdf7d8c
- SHA512 6c319dc91ebb2f1808bb9e7eb3ee1beaa5357e334250802ac173fd73bbca267160b2bfac6db13b4468868b7ed05fd0e34baad54c2bb540140296d9ddb10e6030
- SSDEEP 24576:ubLgurgDdmMSirYbcMNgef0QeQjG/D8kIqYmiHkQg65ASk+RdhAdmvctA0p+9XEk:unsEMSPbcBVQej/s1HkQrAARdhnvoAH
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Contacts a large (1183) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Executes dropped EXE 2 IoCs
pid Process 552 mssecsvr.exe 864 mssecsvr.exe - Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvr.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\T91Q48XV.txt mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\T91Q48XV.txt mssecsvr.exe - Drops file in Windows directory 2 IoCs
description 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
description ioc Process Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0006000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DEBB7726-33BA-4A4E-8498-E682477C1101}\WpadDecisionTime = b035b795ecddd801 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\Content\CachePrefix 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\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\{DEBB7726-33BA-4A4E-8498-E682477C1101} mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DEBB7726-33BA-4A4E-8498-E682477C1101}\WpadNetworkName = "Network 2" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections 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 Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DEBB7726-33BA-4A4E-8498-E682477C1101}\d6-b6-4f-0d-b5-68 mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b6-4f-0d-b5-68\WpadDecisionTime = b035b795ecddd801 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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DEBB7726-33BA-4A4E-8498-E682477C1101}\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b6-4f-0d-b5-68 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b6-4f-0d-b5-68\WpadDecisionReason = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b6-4f-0d-b5-68\WpadDecision = "0" 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\ZoneMap\AutoDetect = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DEBB7726-33BA-4A4E-8498-E682477C1101}\WpadDecisionReason = "1" mssecsvr.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 1584 wrote to memory of 268 1584 rundll32.exe 27 PID 268 wrote to memory of 552 268 rundll32.exe 28 PID 268 wrote to memory of 552 268 rundll32.exe 28 PID 268 wrote to memory of 552 268 rundll32.exe 28 PID 268 wrote to memory of 552 268 rundll32.exe 28
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1584 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\495956157d35d72a276365fab6b4ec6387b2552d67444227dd4e1ade8336156c.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:268 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:552
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-
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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:864
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\WINDOWS\mssecsvr.exe
- Size 3.6MB
- SHA256 363392deccfedda47ab0c639ffb37d5ebedb3218448ba1a8b80349382e3d2b00
- MD5 b9d9625066a34cc108ca55ea141c624a
- SHA1 4f51a129f39bb40a84f004997ceac9c6ac3fcd36
- SHA512 63fc7643dbae65c8996b8d3713c218703f542b7add86f260e6760c4601809c79a1a750fe7291bac3c8e0e822792923277cfcf7e6e1b195c4843638014219da0b
- SSDEEP 24576:tbLgurgDdmMSirYbcMNgef0QeQjG/D8kIqYmiHkQg65ASk+RdhAdmvctA0p+9XEx:tnsEMSPbcBVQej/s1HkQrAARdhnvoAHI
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 3.6MB
- SHA256 363392deccfedda47ab0c639ffb37d5ebedb3218448ba1a8b80349382e3d2b00
- MD5 b9d9625066a34cc108ca55ea141c624a
- SHA1 4f51a129f39bb40a84f004997ceac9c6ac3fcd36
- SHA512 63fc7643dbae65c8996b8d3713c218703f542b7add86f260e6760c4601809c79a1a750fe7291bac3c8e0e822792923277cfcf7e6e1b195c4843638014219da0b
- SSDEEP 24576:tbLgurgDdmMSirYbcMNgef0QeQjG/D8kIqYmiHkQg65ASk+RdhAdmvctA0p+9XEx:tnsEMSPbcBVQej/s1HkQrAARdhnvoAHI
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 3.6MB
- SHA256 363392deccfedda47ab0c639ffb37d5ebedb3218448ba1a8b80349382e3d2b00
- MD5 b9d9625066a34cc108ca55ea141c624a
- SHA1 4f51a129f39bb40a84f004997ceac9c6ac3fcd36
- SHA512 63fc7643dbae65c8996b8d3713c218703f542b7add86f260e6760c4601809c79a1a750fe7291bac3c8e0e822792923277cfcf7e6e1b195c4843638014219da0b
- SSDEEP 24576:tbLgurgDdmMSirYbcMNgef0QeQjG/D8kIqYmiHkQg65ASk+RdhAdmvctA0p+9XEx:tnsEMSPbcBVQej/s1HkQrAARdhnvoAHI
- MD5 SHA1 SHA512 SSDEEP