Analysis
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max time kernel
151s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220718-en -
resource tags
arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system -
submitted
20-07-2022 01:20
Static task
static1
Behavioral task
behavioral1
Sample
235b5532f63214e7072d770e0f6d48e0.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
235b5532f63214e7072d770e0f6d48e0.dll
Resource
win10v2004-20220718-en
General
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Target
235b5532f63214e7072d770e0f6d48e0.dll
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Size
5.0MB
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MD5
235b5532f63214e7072d770e0f6d48e0
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SHA1
f3fcd3d926de73b68c33ab3bcf2cf5b02c52a7f1
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SHA256
540749acd2da3530292fed430ee05bd8752bd4f40499b987da31a24e67959352
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SHA512
4be89f70edd317a709d3453e5ef5636f902657a0fdbd1d3ee8baf73ee874b2faef4f3b0ef562b718ab392f60c759ae7ee77507823fb612f370f9e9cf87f6f50d
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3007) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Executes dropped EXE 2 IoCs
Processes:
mssecsvr.exemssecsvr.exepid process 3936 mssecsvr.exe 4564 mssecsvr.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Drops file in Windows directory 2 IoCs
Processes:
rundll32.exemssecsvr.exedescription ioc process File created C:\WINDOWS\mssecsvr.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvr.exe -
Modifies data under HKEY_USERS 5 IoCs
Processes:
mssecsvr.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 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\ProxyBypass = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" mssecsvr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1704 wrote to memory of 1856 1704 rundll32.exe rundll32.exe PID 1704 wrote to memory of 1856 1704 rundll32.exe rundll32.exe PID 1704 wrote to memory of 1856 1704 rundll32.exe rundll32.exe PID 1856 wrote to memory of 3936 1856 rundll32.exe mssecsvr.exe PID 1856 wrote to memory of 3936 1856 rundll32.exe mssecsvr.exe PID 1856 wrote to memory of 3936 1856 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\235b5532f63214e7072d770e0f6d48e0.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\235b5532f63214e7072d770e0f6d48e0.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1856 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3936
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4564
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD593fe708da0f1871a3ec4cb49fa9f0acf
SHA119680ac7595d06e9a545fd0ca73a217852c64140
SHA256ca5431aceed5cf5533f1db4ef6aca5d764afb8ea336a370854932b19a594e3dc
SHA512187099291b25ec2f65c167bdeec7079a92aa7a653962e069a2edc7dd620e423edeb3ba88240feba4aa6efd38084b902940c4a309272b56501a5f0f66b4eb85b6
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD593fe708da0f1871a3ec4cb49fa9f0acf
SHA119680ac7595d06e9a545fd0ca73a217852c64140
SHA256ca5431aceed5cf5533f1db4ef6aca5d764afb8ea336a370854932b19a594e3dc
SHA512187099291b25ec2f65c167bdeec7079a92aa7a653962e069a2edc7dd620e423edeb3ba88240feba4aa6efd38084b902940c4a309272b56501a5f0f66b4eb85b6
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD593fe708da0f1871a3ec4cb49fa9f0acf
SHA119680ac7595d06e9a545fd0ca73a217852c64140
SHA256ca5431aceed5cf5533f1db4ef6aca5d764afb8ea336a370854932b19a594e3dc
SHA512187099291b25ec2f65c167bdeec7079a92aa7a653962e069a2edc7dd620e423edeb3ba88240feba4aa6efd38084b902940c4a309272b56501a5f0f66b4eb85b6
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memory/1856-130-0x0000000000000000-mapping.dmp
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memory/3936-131-0x0000000000000000-mapping.dmp