Analysis
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max time kernel
120s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20240319-en -
resource tags
arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system -
submitted
24/03/2024, 10:05
Static task
static1
Behavioral task
behavioral1
Sample
ce223b231f2862124386c585e9b95ca1.dll
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
ce223b231f2862124386c585e9b95ca1.dll
Resource
win10v2004-20240226-en
General
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Target
ce223b231f2862124386c585e9b95ca1.dll
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Size
5.0MB
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MD5
ce223b231f2862124386c585e9b95ca1
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SHA1
61673e2be7e3479a818eb98339692bc7e4a5b79c
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SHA256
92bc02116a72b13d359ba88e0984ea09d2eb230fbf711d92a0c961e08274a09e
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SHA512
dede42923cae7167fcff56ae1131e6cb5a9c8ef14d76d1be84211504685d628fa1abf658a7ec89d0bca976c35ef6eb58f93e4f59ffcc4c27468e3e44c0ac4faa
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SSDEEP
12288:TQbLgmluyQhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+DHeQYSUjEXF5:MbLguVQhfdmMSirYbcMNgef0QeQjG
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Executes dropped EXE 2 IoCs
pid Process 2176 mssecsvr.exe 2728 mssecsvr.exe -
Drops file in System32 directory 5 IoCs
description ioc Process File created C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\IRTGZQH9.txt mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\IRTGZQH9.txt mssecsvr.exe 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\A2GBD5K9.txt mssecsvr.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\A2GBD5K9.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 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\Content\CachePrefix mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD}\WpadDecision = "0" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-79-7d-0c-50-3d\WpadDecisionTime = 50e2c2ecd27dda01 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-79-7d-0c-50-3d\WpadDecision = "0" 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\Connections 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\ZoneMap\ mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0028000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD}\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD}\WpadDecisionTime = 50e2c2ecd27dda01 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\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD}\d2-79-7d-0c-50-3d mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD} mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FBBD3CD6-2B3B-4F34-AA7F-0D38E0F6D3BD}\WpadNetworkName = "Network 3" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-79-7d-0c-50-3d mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-79-7d-0c-50-3d\WpadDecisionReason = "1" 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 mssecsvr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2144 wrote to memory of 2140 2144 rundll32.exe 28 PID 2140 wrote to memory of 2176 2140 rundll32.exe 29 PID 2140 wrote to memory of 2176 2140 rundll32.exe 29 PID 2140 wrote to memory of 2176 2140 rundll32.exe 29 PID 2140 wrote to memory of 2176 2140 rundll32.exe 29
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ce223b231f2862124386c585e9b95ca1.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2144 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ce223b231f2862124386c585e9b95ca1.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2140 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2176
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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:2728
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
2.2MB
MD560a91a498c0f1ffddef484c5a4d42564
SHA1a15dcd408c0aee1f5f38b50528583bdee6536227
SHA25603dc66c9970481c5958d247f9eba93a6a7ad9f9bbf94845b9fbea8ed1e1e0757
SHA512e7b7a308227fc3c72d8d1bd262389257e1f2fa419f6ceff58f73a06f850245f6e1068ea74cf42388ee2ca2712d7b5d9a2ce0e6f7264c3885b82c1caa70891e55
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Filesize
729KB
MD5e0d04853a9cd490db0c2d29d51548adb
SHA1d26e397cf70e8b0c03b2b24f51c700ee5eebc16c
SHA256213a5e929b3bf95e9dbcc72ee7b94662b83a50739a6776643cf77528efcee0b3
SHA512d74f598040a7151d96c35859814471fa3a3c3a59f30f415b8c3446001c384ecf9c4526ee561fec2c5224b1b4d3bf8000a48550e4531d9a6b6b489a7ba806da09