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Analysis
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max time kernel
69s -
max time network
71s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
06/01/2023, 00:44
Static task
static1
Behavioral task
behavioral1
Sample
95ae8e32eb8635e7eabe14ffbfaa777b.dll
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
95ae8e32eb8635e7eabe14ffbfaa777b.dll
Resource
win10v2004-20221111-en
General
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Target
95ae8e32eb8635e7eabe14ffbfaa777b.dll
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Size
5.0MB
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MD5
95ae8e32eb8635e7eabe14ffbfaa777b
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SHA1
d5872c3f694a9e23c0583c4ae3e5c59eab26c021
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SHA256
fb648bfb485f910e065cc18778364a56be32044d1ac4729449f3cc28221b12e8
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SHA512
053e31bb5d469a2c4b1c5ab658d87051168c8a0b8d55d1709bcc4c11faf16fd1617263c5c30c4c9bfb5b319ead6d2712fafebc5a40888f5a6b46d1eb6030335f
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SSDEEP
49152:RnnMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:1nPoBhz1aRxcSUDk36SAEdhv
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Executes dropped EXE 2 IoCs
pid Process 1176 mssecsvr.exe 1308 mssecsvr.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvr.exe File created C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\YGIHVSQL.txt mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\YGIHVSQL.txt mssecsvr.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\WINDOWS\mssecsvr.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvr.exe -
Modifies data under HKEY_USERS 24 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecisionTime = 405579757021d901 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 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\History\CachePrefix = "Visited:" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f004b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\16-f4-e4-81-94-fc mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F} mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadNetworkName = "Network 2" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecisionTime = 405579757021d901 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecision = "0" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 1432 wrote to memory of 2024 1432 rundll32.exe 28 PID 2024 wrote to memory of 1176 2024 rundll32.exe 29 PID 2024 wrote to memory of 1176 2024 rundll32.exe 29 PID 2024 wrote to memory of 1176 2024 rundll32.exe 29 PID 2024 wrote to memory of 1176 2024 rundll32.exe 29
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\95ae8e32eb8635e7eabe14ffbfaa777b.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1432 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\95ae8e32eb8635e7eabe14ffbfaa777b.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1176
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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
PID:1308
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
2.2MB
MD5115b1d97402bc50dacb74ba73c7464d2
SHA1799abb0d4067ec605126cd40ce52949510a60cf7
SHA256a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b
SHA512910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4
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Filesize
2.2MB
MD5115b1d97402bc50dacb74ba73c7464d2
SHA1799abb0d4067ec605126cd40ce52949510a60cf7
SHA256a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b
SHA512910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4
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Filesize
2.2MB
MD5115b1d97402bc50dacb74ba73c7464d2
SHA1799abb0d4067ec605126cd40ce52949510a60cf7
SHA256a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b
SHA512910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4