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, 01:38
Static task
static1
Behavioral task
behavioral1
Sample
34d281dc1cf62696c6d3b5897243aabc.dll
Resource
win7-20220718-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
34d281dc1cf62696c6d3b5897243aabc.dll
Resource
win10v2004-20220414-en
windows10-2004-x64
7 signatures
150 seconds
General
- Target 34d281dc1cf62696c6d3b5897243aabc.dll
- Size 5.0MB
- Sample220720-b2dx8aabd9
- SHA256 b5248a20ec1173991c977fa52a8aebbae35f0123be80fe120e827cb0fb5d82cc
- MD5 34d281dc1cf62696c6d3b5897243aabc
- SHA1 b5e94cc591d9acd1f04e16d2af251553ee561e0c
- SHA512 80a8c192ce8787a4bf767e9b1a0ae60ba4cb77b88522a78e6d876fd5eb10d1eeffa8edfb99e5db82fbbdf586ac4f16af14bbbec5a95387a233f68b81254853de
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Contacts a large (1258) 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 1328 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\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\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\ZoneMap\UNCAsIntranet = "0" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 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\Wpad\4a-be-6e-b9-73-90 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "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\AutoDetect = "1" mssecsvr.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 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\{DDD376C1-A934-4862-A477-420673A0EB55} mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionReason = "1" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings 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\Cookies\CachePrefix = "Cookie:" mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvr.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionTime = 3008c326ea9bd801 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\{DDD376C1-A934-4862-A477-420673A0EB55}\4a-be-6e-b9-73-90 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 = 3008c326ea9bd801 mssecsvr.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1856 wrote to memory of 1816 1856 rundll32.exe 27 PID 1816 wrote to memory of 1148 1816 rundll32.exe 28 PID 1816 wrote to memory of 1148 1816 rundll32.exe 28 PID 1816 wrote to memory of 1148 1816 rundll32.exe 28 PID 1816 wrote to memory of 1148 1816 rundll32.exe 28
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\34d281dc1cf62696c6d3b5897243aabc.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\34d281dc1cf62696c6d3b5897243aabc.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1816 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1148
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-
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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:1328
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\WINDOWS\mssecsvr.exe
- Size 2.2MB
- SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
- MD5 1c9d034deb52ac7bf38a565728d94886
- SHA1 9459d340dbfff28b74c057a57cde24f9239129da
- SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
- SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 2.2MB
- SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
- MD5 1c9d034deb52ac7bf38a565728d94886
- SHA1 9459d340dbfff28b74c057a57cde24f9239129da
- SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
- SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\mssecsvr.exe
- Size 2.2MB
- SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
- MD5 1c9d034deb52ac7bf38a565728d94886
- SHA1 9459d340dbfff28b74c057a57cde24f9239129da
- SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
- SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
- MD5 SHA1 SHA512 SSDEEP