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 01:23
Static task
static1
Behavioral task
behavioral1
Sample
bbf9df803879eb3ca21ac1b623185b5d.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
bbf9df803879eb3ca21ac1b623185b5d.dll
Resource
win10v2004-20220718-en
General
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Target
bbf9df803879eb3ca21ac1b623185b5d.dll
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Size
5.0MB
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MD5
bbf9df803879eb3ca21ac1b623185b5d
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SHA1
f8798ff9b0d4f0205ce2b2c5d8a310689e131736
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SHA256
72f7e4e984d7b866d04d110d62ace0743f7229cd34889f5189cff9bb83084b9e
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SHA512
fc3e5ffd426a277e7f5c48514cccbb36266811751c54ae10600095355cb27f32e70700b33f3b107509349cdb6c29a4e5279f1f9398dc9edda54599270fc2a522
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1245) 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 1656 mssecsvc.exe 1016 mssecsvc.exe 756 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 (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\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68A262D9-8B48-4BA6-846B-FB4217E138F5}\WpadDecisionReason = "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\{68A262D9-8B48-4BA6-846B-FB4217E138F5}\WpadDecisionTime = 1053c60ee89bd801 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68A262D9-8B48-4BA6-846B-FB4217E138F5}\WpadNetworkName = "Network 3" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings 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 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\76-77-b3-a3-16-f3 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-77-b3-a3-16-f3\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68A262D9-8B48-4BA6-846B-FB4217E138F5} mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68A262D9-8B48-4BA6-846B-FB4217E138F5}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68A262D9-8B48-4BA6-846B-FB4217E138F5}\76-77-b3-a3-16-f3 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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\History\CachePrefix = "Visited:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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\76-77-b3-a3-16-f3\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-77-b3-a3-16-f3\WpadDecisionTime = 1053c60ee89bd801 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 1768 wrote to memory of 964 1768 rundll32.exe rundll32.exe PID 964 wrote to memory of 1656 964 rundll32.exe mssecsvc.exe PID 964 wrote to memory of 1656 964 rundll32.exe mssecsvc.exe PID 964 wrote to memory of 1656 964 rundll32.exe mssecsvc.exe PID 964 wrote to memory of 1656 964 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bbf9df803879eb3ca21ac1b623185b5d.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bbf9df803879eb3ca21ac1b623185b5d.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
MD5404ed449b2e6c758ae005323470d3d6b
SHA15acc4178a2dba745555d71e3e8b17a48eef61e69
SHA2563551641e8dcb505145d98214daf8a70858088da67ad15f862fcc37d099abc72b
SHA51296340935fa7912fdcaca3d072557c1d8cd60662ed08fd906f4818d698a24ee8b3c59bdc722e3849ce51037e1e67267de1a9db915ad9307c630e232d88bf2169c
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5404ed449b2e6c758ae005323470d3d6b
SHA15acc4178a2dba745555d71e3e8b17a48eef61e69
SHA2563551641e8dcb505145d98214daf8a70858088da67ad15f862fcc37d099abc72b
SHA51296340935fa7912fdcaca3d072557c1d8cd60662ed08fd906f4818d698a24ee8b3c59bdc722e3849ce51037e1e67267de1a9db915ad9307c630e232d88bf2169c
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5404ed449b2e6c758ae005323470d3d6b
SHA15acc4178a2dba745555d71e3e8b17a48eef61e69
SHA2563551641e8dcb505145d98214daf8a70858088da67ad15f862fcc37d099abc72b
SHA51296340935fa7912fdcaca3d072557c1d8cd60662ed08fd906f4818d698a24ee8b3c59bdc722e3849ce51037e1e67267de1a9db915ad9307c630e232d88bf2169c
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5fab4b9c83e6cec59aacc65a149ee6528
SHA19854923a1d121037ada38031337b0f6576a7b2b0
SHA2566bb133db6ad270a180724bb1a726d1004cff6cf19fb2c33cb0cb6dc727bd18e1
SHA512a14f605f1c01a4fac911b2cea74c7faaef7061bb4c34313153a569257b01f667828546bbbbcc4f7ad079375140caac418d58314102d802441bec8f6d87cd14c2
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memory/964-54-0x0000000000000000-mapping.dmp
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memory/964-55-0x00000000757E1000-0x00000000757E3000-memory.dmpFilesize
8KB
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memory/1656-56-0x0000000000000000-mapping.dmp