Analysis
- 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, 03:09
Static task
static1
Behavioral task
behavioral1
Sample
6f29a203db474387de92d49a331325ab.dll
Resource
win7-20220718-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
6f29a203db474387de92d49a331325ab.dll
Resource
win10v2004-20220414-en
windows10-2004-x64
7 signatures
150 seconds
General
- Target 6f29a203db474387de92d49a331325ab.dll
- Size 5.0MB
- Sample220720-dnghasbca5
- SHA256 60b39d34b2089438db05f612a11f09e14fea05317ca2b4eb4f992b5be4d61103
- MD5 6f29a203db474387de92d49a331325ab
- SHA1 6cd0bfb71185d3f1f5418914544be86d176014bf
- SHA512 e5dbd692b871947114a4616bff2665b77e8620b80c8a61f2809b1735d6897c7e59a832f5add5b3dee7b209a98a34f8ea704b019941f2249d87980d7e51d7646d
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Contacts a large (1256) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Executes dropped EXE 2 IoCs
pid Process 1148 mssecsvr.exe 1404 mssecsvr.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 mssecsvr.exe - Drops file in Windows directory 2 IoCs
description ioc Process File created C:\WINDOWS\tasksche.exe mssecsvr.exe File created C:\WINDOWS\mssecsvr.exe rundll32.exe - Modifies data under HKEY_USERS 24 IoCs
description ioc Process 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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55} mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\4a-be-6e-b9-73-90 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecision = "0" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionReason = "1" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadNetworkName = "Network 3" 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 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 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\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionTime = 503e9ddff69bd801 mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionReason = "1" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionTime = 503e9ddff69bd801 mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecision = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90 mssecsvr.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1856 wrote to memory of 1360 1856 rundll32.exe 27 PID 1360 wrote to memory of 1148 1360 rundll32.exe 28 PID 1360 wrote to memory of 1148 1360 rundll32.exe 28 PID 1360 wrote to memory of 1148 1360 rundll32.exe 28 PID 1360 wrote to memory of 1148 1360 rundll32.exe 28
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6f29a203db474387de92d49a331325ab.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\6f29a203db474387de92d49a331325ab.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1360 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1148
-
-
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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:1404
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\WINDOWS\mssecsvr.exe
- Size 2.2MB
- SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
- MD5 964bdee2f9be8be8d589fd8c5006130c
- SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
- SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
- SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 2.2MB
- SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
- MD5 964bdee2f9be8be8d589fd8c5006130c
- SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
- SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
- SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 2.2MB
- SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
- MD5 964bdee2f9be8be8d589fd8c5006130c
- SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
- SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
- SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
- MD5 SHA1 SHA512 SSDEEP