Analysis
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max time kernel
151s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220715-en -
resource tags
arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system -
submitted
20-07-2022 01:50
Static task
static1
Behavioral task
behavioral1
Sample
f5f5f4b69903ead601696df4279fcfb5.dll
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
f5f5f4b69903ead601696df4279fcfb5.dll
Resource
win10v2004-20220414-en
General
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Target
f5f5f4b69903ead601696df4279fcfb5.dll
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Size
5.0MB
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MD5
f5f5f4b69903ead601696df4279fcfb5
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SHA1
c20ccce59868c3b7bc5c2e291740b1b6659f95ed
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SHA256
a68dbf03faf318b6b4c599e2b9d3da00703b2668c5dc22f3262a3effdc38f580
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SHA512
73aa9f8005f36caeed4cf4490bb38a2b7d10a0755f05ee01c127dad3bf37fd1dc594c7ca8908e5fe6d62d27a5db7f166c0d1249d979c6bc3c114867f3ddb87ee
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (1553) 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 1560 mssecsvc.exe 1248 mssecsvc.exe 1708 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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281}\WpadDecision = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281}\WpadNetworkName = "Network 3" 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\ProxyEnable = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" 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\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-1d-a5-c5-14-08 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-1d-a5-c5-14-08\WpadDecision = "0" 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 Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281}\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281}\ae-1d-a5-c5-14-08 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-1d-a5-c5-14-08\WpadDecisionReason = "1" 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 Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281} mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{76705A9A-E53A-489F-8D0E-78AAB2EBC281}\WpadDecisionTime = f0d6f410db9bd801 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ae-1d-a5-c5-14-08\WpadDecisionTime = f0d6f410db9bd801 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 1876 wrote to memory of 2024 1876 rundll32.exe rundll32.exe PID 2024 wrote to memory of 1560 2024 rundll32.exe mssecsvc.exe PID 2024 wrote to memory of 1560 2024 rundll32.exe mssecsvc.exe PID 2024 wrote to memory of 1560 2024 rundll32.exe mssecsvc.exe PID 2024 wrote to memory of 1560 2024 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\f5f5f4b69903ead601696df4279fcfb5.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\f5f5f4b69903ead601696df4279fcfb5.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
MD54a3bc8abfb61a51046c5d57ccdb3c971
SHA13fab0b3c32c65658a5294bae711186f590593a79
SHA256d7f2e2a8ed20acabcf425d450e299d572711b96b79dd1d845e7b5277148e4147
SHA512f371c5b47b64ac145863dc351bd4be493922aca787067c52dd3620be3660597c1d0646a55d46eab7861f178fe80664f543301bc99deda7969737fc65e2d43967
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD54a3bc8abfb61a51046c5d57ccdb3c971
SHA13fab0b3c32c65658a5294bae711186f590593a79
SHA256d7f2e2a8ed20acabcf425d450e299d572711b96b79dd1d845e7b5277148e4147
SHA512f371c5b47b64ac145863dc351bd4be493922aca787067c52dd3620be3660597c1d0646a55d46eab7861f178fe80664f543301bc99deda7969737fc65e2d43967
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD54a3bc8abfb61a51046c5d57ccdb3c971
SHA13fab0b3c32c65658a5294bae711186f590593a79
SHA256d7f2e2a8ed20acabcf425d450e299d572711b96b79dd1d845e7b5277148e4147
SHA512f371c5b47b64ac145863dc351bd4be493922aca787067c52dd3620be3660597c1d0646a55d46eab7861f178fe80664f543301bc99deda7969737fc65e2d43967
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C:\Windows\tasksche.exeFilesize
3.4MB
MD51557965033d241c689d83ca84b856e1f
SHA1d6ee7982ca3ce335995788a31760f2c8e2b73780
SHA256e026ca34fa4cb8d690c9828c62ef6dc1cead1f2f2f753faacdb0c1b91ac060c5
SHA512d28bdcc31fe6e8f5548a8a3611ff80c747bf5d52f22ea25695af5abd9a44e92471581b6d249280a51005a3eb053959ff317732956db5ae172658714f9c841687
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memory/1560-56-0x0000000000000000-mapping.dmp
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memory/2024-54-0x0000000000000000-mapping.dmp
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memory/2024-55-0x00000000752D1000-0x00000000752D3000-memory.dmpFilesize
8KB