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
19-07-2022 23:36
Static task
static1
Behavioral task
behavioral1
Sample
2c15a641e3cc97fc712befb38e937fd9.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
2c15a641e3cc97fc712befb38e937fd9.dll
Resource
win10v2004-20220718-en
General
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Target
2c15a641e3cc97fc712befb38e937fd9.dll
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Size
5.0MB
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MD5
2c15a641e3cc97fc712befb38e937fd9
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SHA1
680b67126d68cc02d38dbd68d082898362a59d2a
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SHA256
7bca723c443984f5a4215d464144ef23b03677eaabd81e64a9734b634a41b6ea
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SHA512
bdcc728f43365f5d829cefd3617c7d8c12d6ec8f98126c261f09e33a4f9917ce745aad730fed2c9444e7cd690d08a0e51672ee980e91932e167786b189a9cbb1
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1270) 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 1052 mssecsvc.exe 1748 mssecsvc.exe 1888 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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bf000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D}\32-f3-ac-98-f8-73 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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-f3-ac-98-f8-73\WpadDecision = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-f3-ac-98-f8-73\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D}\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections 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 (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-f3-ac-98-f8-73\WpadDecisionTime = 30d9f01ad99bd801 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D}\WpadNetworkName = "Network 3" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-f3-ac-98-f8-73 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D} mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7E7FA4EE-B842-451E-9194-93613F0FF66D}\WpadDecisionTime = 30d9f01ad99bd801 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 2032 wrote to memory of 1412 2032 rundll32.exe rundll32.exe PID 1412 wrote to memory of 1052 1412 rundll32.exe mssecsvc.exe PID 1412 wrote to memory of 1052 1412 rundll32.exe mssecsvc.exe PID 1412 wrote to memory of 1052 1412 rundll32.exe mssecsvc.exe PID 1412 wrote to memory of 1052 1412 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2c15a641e3cc97fc712befb38e937fd9.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2c15a641e3cc97fc712befb38e937fd9.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
MD585b75685f5a927cab4ea3db5ee2e8f0e
SHA1370037a134cfe40c34ec99df4df1d67c77281295
SHA2562821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094
SHA512b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD585b75685f5a927cab4ea3db5ee2e8f0e
SHA1370037a134cfe40c34ec99df4df1d67c77281295
SHA2562821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094
SHA512b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD585b75685f5a927cab4ea3db5ee2e8f0e
SHA1370037a134cfe40c34ec99df4df1d67c77281295
SHA2562821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094
SHA512b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5f054217c3a7ff740ac81884141938371
SHA100ec4910a006d15055dcbd205880bc2ec77e3076
SHA256cf6871b2011daab59ca68082ea8b01052fe2c8eb03f512768a5bde4c8e7843b4
SHA51213399a737f4421a1b057985d32c8bf3a8152adfe614e08a68f10c8e6c64051fb6ac5189852453a2c0fb50de46c28e2fe4ec3a5efb46173772334114793446755
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memory/1052-56-0x0000000000000000-mapping.dmp
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memory/1412-54-0x0000000000000000-mapping.dmp
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memory/1412-55-0x0000000075C51000-0x0000000075C53000-memory.dmpFilesize
8KB