Analysis
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max time kernel
151s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
21-09-2022 03:53
Static task
static1
Behavioral task
behavioral1
Sample
0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll
Resource
win10v2004-20220812-en
General
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Target
0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll
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Size
5.0MB
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MD5
008b9895ed29a02b2ad9c15d10fe250c
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SHA1
6dba81733aa199fd64dcfbb17e43d1a575a02086
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SHA256
0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590
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SHA512
3deeeaa92cb98ce7fcca23a30fe08834c10af7e13b7ab8cbdceaa23408798a9dbf94cd4e3eecc25123abd93fbad8759a3c772d30bcffb34b1cb48ac39f8e0aea
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SSDEEP
24576:RbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhA:RnsEMSPbcBVu/oRdh
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3031) 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 4696 mssecsvr.exe 920 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 12 IoCs
Processes:
mssecsvr.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P 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\AutoDetect = "0" mssecsvr.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History 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\IntranetName = "1" mssecsvr.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2180 wrote to memory of 2232 2180 rundll32.exe rundll32.exe PID 2180 wrote to memory of 2232 2180 rundll32.exe rundll32.exe PID 2180 wrote to memory of 2232 2180 rundll32.exe rundll32.exe PID 2232 wrote to memory of 4696 2232 rundll32.exe mssecsvr.exe PID 2232 wrote to memory of 4696 2232 rundll32.exe mssecsvr.exe PID 2232 wrote to memory of 4696 2232 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD5476e46074243409cd11eb699a1e87238
SHA1462087544ff91ef506079a684419b8d5748462fd
SHA25623534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
SHA512c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5476e46074243409cd11eb699a1e87238
SHA1462087544ff91ef506079a684419b8d5748462fd
SHA25623534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
SHA512c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5476e46074243409cd11eb699a1e87238
SHA1462087544ff91ef506079a684419b8d5748462fd
SHA25623534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
SHA512c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
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memory/2232-132-0x0000000000000000-mapping.dmp
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memory/4696-133-0x0000000000000000-mapping.dmp