Analysis
- max time kernel
150s - 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, 07:36
Static task
static1
Behavioral task
behavioral1
Sample
83fd51535985071f14d083c143797233.dll
Resource
win7-20220715-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
83fd51535985071f14d083c143797233.dll
Resource
win10v2004-20220718-en
windows10-2004-x64
7 signatures
150 seconds
General
- Target 83fd51535985071f14d083c143797233.dll
- Size 5.0MB
- Sample220720-je9elsdffm
- SHA256 2e763503a70d6279bb00ac73127955280acdba20dc1ef6f5f9f1aa24098dfcf8
- MD5 83fd51535985071f14d083c143797233
- SHA1 7d639bcb93f9bf3afbcb71256e20986af30bceea
- SHA512 933d71b3cf7b452101720d1b73996663204fc6cbd35c7b4d7895e4869a16f9426ac1578e73287403965be5feaf97e039a522b92f5910bd088d6b2a7c3bfc8fbc
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Contacts a large (1260) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Executes dropped EXE 3 IoCs
pid Process 964 mssecsvc.exe 1640 mssecsvc.exe 1712 tasksche.exe - Drops file in System32 directory 1 IoCs
description 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
description 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
description ioc Process 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 (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 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F}\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F}\42-f8-ea-38-4d-ec 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\ZoneMap\ mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F} mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-f8-ea-38-4d-ec mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-f8-ea-38-4d-ec\WpadDecision = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 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\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F}\WpadDecisionTime = c07805680b9cd801 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-f8-ea-38-4d-ec\WpadDecisionReason = "1" 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 (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F}\WpadDecision = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2DAA351C-3527-4319-83AB-9613CD61224F}\WpadNetworkName = "Network 3" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-f8-ea-38-4d-ec\WpadDecisionTime = c07805680b9cd801 mssecsvc.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1972 wrote to memory of 1748 1972 rundll32.exe 27 PID 1748 wrote to memory of 964 1748 rundll32.exe 28 PID 1748 wrote to memory of 964 1748 rundll32.exe 28 PID 1748 wrote to memory of 964 1748 rundll32.exe 28 PID 1748 wrote to memory of 964 1748 rundll32.exe 28
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\83fd51535985071f14d083c143797233.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1972 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\83fd51535985071f14d083c143797233.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1748 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:964 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:1712
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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
PID:1640
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\WINDOWS\mssecsvc.exe
- Size 3.6MB
- SHA256 4b8414f81b20f0635b02072a6b3d6de8b168892554331fa8231ff51334e40421
- MD5 6d5e97b9f93fc008b99e40c676901ae3
- SHA1 f6111eaf56b1c03c3ac0fa6f65fce945f230538c
- SHA512 017c055f7aea286082d96623c43133a1920754fe7f3e3006a0836e106031461d13e9a8bfafb27e78522a41ac9da0409625c84120959b0f22609bfc32f2c0087a
- SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvc.exe
- Size 3.6MB
- SHA256 4b8414f81b20f0635b02072a6b3d6de8b168892554331fa8231ff51334e40421
- MD5 6d5e97b9f93fc008b99e40c676901ae3
- SHA1 f6111eaf56b1c03c3ac0fa6f65fce945f230538c
- SHA512 017c055f7aea286082d96623c43133a1920754fe7f3e3006a0836e106031461d13e9a8bfafb27e78522a41ac9da0409625c84120959b0f22609bfc32f2c0087a
- SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvc.exe
- Size 3.6MB
- SHA256 4b8414f81b20f0635b02072a6b3d6de8b168892554331fa8231ff51334e40421
- MD5 6d5e97b9f93fc008b99e40c676901ae3
- SHA1 f6111eaf56b1c03c3ac0fa6f65fce945f230538c
- SHA512 017c055f7aea286082d96623c43133a1920754fe7f3e3006a0836e106031461d13e9a8bfafb27e78522a41ac9da0409625c84120959b0f22609bfc32f2c0087a
- SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\tasksche.exe
- Size 3.4MB
- SHA256 eb3830d19e5e887593976dcf7a040f22bd2dbd43e911320113acb2e54654cf92
- MD5 67d08a8ea0584d0c7a00c2179c8e010f
- SHA1 317a7c1cf49cd6907e22444d63dea832d175d2a6
- SHA512 c667afc72f6d933e555c96150e0ea465e5f2276e7c896d932f59dadf1a2008a1ab9aaf7d68df3dd0b7227d26394758699eb5f3c0818882d0ecd8d7e3a900a037
- SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:QqPoBhz1aRxcSUDk36SA
- MD5 SHA1 SHA512 SSDEEP