Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
15-05-2021 11:22
Static task
static1
Behavioral task
behavioral1
Sample
de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce.dll
Resource
win7v20210410
Behavioral task
behavioral2
Sample
de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce.dll
Resource
win10v20210408
General
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Target
de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce.dll
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Size
5.0MB
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MD5
51bc7875d20c501041b7171acd26cad8
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SHA1
7a97039277884828ae21c9f6117da1231a1cb265
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SHA256
de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce
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SHA512
dd302277306de1d2813ae3276ae880cd983cea7b4a424631281cbfb2b4c3457c7d70f520ff632446824e8f82f9bd791912f05b805e1e8be7872634202f1152a1
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Executes dropped EXE 2 IoCs
Processes:
mssecsvr.exemssecsvr.exepid process 4056 mssecsvr.exe 2260 mssecsvr.exe -
Drops file in System32 directory 5 IoCs
Processes:
mssecsvr.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 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 8 IoCs
Processes:
mssecsvr.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 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\ZoneMap\ mssecsvr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 736 wrote to memory of 1220 736 rundll32.exe rundll32.exe PID 736 wrote to memory of 1220 736 rundll32.exe rundll32.exe PID 736 wrote to memory of 1220 736 rundll32.exe rundll32.exe PID 1220 wrote to memory of 4056 1220 rundll32.exe mssecsvr.exe PID 1220 wrote to memory of 4056 1220 rundll32.exe mssecsvr.exe PID 1220 wrote to memory of 4056 1220 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\de8456537e95ac3116d46d95e8da3b66af2ab87f8039ba47093cc63a66eaf4ce.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
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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
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeMD5
fb8acc447fd47ab50876d6962fccf3f5
SHA14c9e23868bc42466c5fa3a77469ee8f9a30959d6
SHA256cb5fa8e40ebaeeee5a8e6cf113f0abd6124de935916158284fffa70b87c772a8
SHA512e9fd5764560aee54834fce9ab7b5c0a9fdc907ef9602d2d8ed1aee938431f935a64282867b75c82f676f3bcba1de8a0cb33bb5c6ad2123344a74f3baf551c3ae
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C:\Windows\mssecsvr.exeMD5
fb8acc447fd47ab50876d6962fccf3f5
SHA14c9e23868bc42466c5fa3a77469ee8f9a30959d6
SHA256cb5fa8e40ebaeeee5a8e6cf113f0abd6124de935916158284fffa70b87c772a8
SHA512e9fd5764560aee54834fce9ab7b5c0a9fdc907ef9602d2d8ed1aee938431f935a64282867b75c82f676f3bcba1de8a0cb33bb5c6ad2123344a74f3baf551c3ae
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C:\Windows\mssecsvr.exeMD5
fb8acc447fd47ab50876d6962fccf3f5
SHA14c9e23868bc42466c5fa3a77469ee8f9a30959d6
SHA256cb5fa8e40ebaeeee5a8e6cf113f0abd6124de935916158284fffa70b87c772a8
SHA512e9fd5764560aee54834fce9ab7b5c0a9fdc907ef9602d2d8ed1aee938431f935a64282867b75c82f676f3bcba1de8a0cb33bb5c6ad2123344a74f3baf551c3ae
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memory/1220-114-0x0000000000000000-mapping.dmp
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memory/4056-115-0x0000000000000000-mapping.dmp