Analysis
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max time kernel
151s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
19-07-2022 23:33
Static task
static1
Behavioral task
behavioral1
Sample
163776387e17b3608a6db423bbe4fc3f.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
163776387e17b3608a6db423bbe4fc3f.dll
Resource
win10v2004-20220718-en
General
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Target
163776387e17b3608a6db423bbe4fc3f.dll
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Size
5.0MB
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MD5
163776387e17b3608a6db423bbe4fc3f
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SHA1
c8253055cfea721a094548665363c268f25b27cb
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SHA256
138887bdba248dab37aaa98cf2d7f06445b8018a24a9a2ffeb70da5a1d1be038
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SHA512
02649642b7ad60317dd861538b0a0fe0cfe36d2d07e751445f5bbed0769a76c73da7e8a34c7abb47851a6998efd7dd8c95cd62c4460a0006c1d952dc48418f89
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1243) 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:
mssecsvc.exemssecsvc.exepid process 1892 mssecsvc.exe 2024 mssecsvc.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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecisionTime = b0b69db1d89bd801 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecision = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionReason = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecision = "0" 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 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\06-75-a7-dd-b9-dc mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionTime = b0b69db1d89bd801 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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0} mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\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\AutoDetect = "1" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadNetworkName = "Network 3" mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 640 wrote to memory of 1672 640 rundll32.exe rundll32.exe PID 1672 wrote to memory of 1892 1672 rundll32.exe mssecsvc.exe PID 1672 wrote to memory of 1892 1672 rundll32.exe mssecsvc.exe PID 1672 wrote to memory of 1892 1672 rundll32.exe mssecsvc.exe PID 1672 wrote to memory of 1892 1672 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\163776387e17b3608a6db423bbe4fc3f.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\163776387e17b3608a6db423bbe4fc3f.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\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
MD597482e7b16e42ed8c505a99a926a56cc
SHA1080f06ca9c603df1447232f223a290d0e736d354
SHA2560ccbddd39d86453355f3090740adc3e65bf7a1765a71d86b72b235f2ae8357c6
SHA5128c5439b7387eb0f8a8cd51f06e751201d5621ce79a9d7ba5b8f28bdc03f6b9bc10a99216ee84e65495bdfcf4a8057bbb32ad8f34002eb4679bafcd6b2c35a244
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD597482e7b16e42ed8c505a99a926a56cc
SHA1080f06ca9c603df1447232f223a290d0e736d354
SHA2560ccbddd39d86453355f3090740adc3e65bf7a1765a71d86b72b235f2ae8357c6
SHA5128c5439b7387eb0f8a8cd51f06e751201d5621ce79a9d7ba5b8f28bdc03f6b9bc10a99216ee84e65495bdfcf4a8057bbb32ad8f34002eb4679bafcd6b2c35a244
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD597482e7b16e42ed8c505a99a926a56cc
SHA1080f06ca9c603df1447232f223a290d0e736d354
SHA2560ccbddd39d86453355f3090740adc3e65bf7a1765a71d86b72b235f2ae8357c6
SHA5128c5439b7387eb0f8a8cd51f06e751201d5621ce79a9d7ba5b8f28bdc03f6b9bc10a99216ee84e65495bdfcf4a8057bbb32ad8f34002eb4679bafcd6b2c35a244
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memory/1672-54-0x0000000000000000-mapping.dmp
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memory/1672-55-0x0000000076291000-0x0000000076293000-memory.dmpFilesize
8KB
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memory/1892-56-0x0000000000000000-mapping.dmp