Analysis
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max time kernel
150s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
resource tags
arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system -
submitted
20-07-2022 01:21
Static task
static1
Behavioral task
behavioral1
Sample
148c53e6e824ea02536573145e9a280f.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
148c53e6e824ea02536573145e9a280f.dll
Resource
win10v2004-20220414-en
General
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Target
148c53e6e824ea02536573145e9a280f.dll
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Size
5.0MB
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MD5
148c53e6e824ea02536573145e9a280f
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SHA1
2d2506b815ffddf5100a04ecf820c2367f066534
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SHA256
d357d032ff72e7ccf7b757f023adb1efee5224a1a6cb88a9d04a75c71869c83f
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SHA512
0386866d02b44217237e5810e1b7665cdf874b6d53c04b4883913aec628ce28c3278cf6871ae6e63f9451436935324b2b902f3eade36fcf3d7e5d7622a4bf9d9
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3119) 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 2408 mssecsvr.exe 3832 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 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 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 -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2172 wrote to memory of 2404 2172 rundll32.exe rundll32.exe PID 2172 wrote to memory of 2404 2172 rundll32.exe rundll32.exe PID 2172 wrote to memory of 2404 2172 rundll32.exe rundll32.exe PID 2404 wrote to memory of 2408 2404 rundll32.exe mssecsvr.exe PID 2404 wrote to memory of 2408 2404 rundll32.exe mssecsvr.exe PID 2404 wrote to memory of 2408 2404 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\148c53e6e824ea02536573145e9a280f.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\148c53e6e824ea02536573145e9a280f.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2408
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3832
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD56c549de3462a189387cc9914a2f81872
SHA1bf2150145e91b8be34e8328188930a23c0c385f9
SHA2567ad8ec9f8686ad924e553921c930d9732c6c2d740ffe1dff6757ff0caaa27b54
SHA5125f14243e1b00251879a566337b964019acdc277aff92d95e3e0afceb5fa6b562d621183ca0737d4988dc499b4a383ff94dec6254e0faaa2f8addf3add15106f2
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD56c549de3462a189387cc9914a2f81872
SHA1bf2150145e91b8be34e8328188930a23c0c385f9
SHA2567ad8ec9f8686ad924e553921c930d9732c6c2d740ffe1dff6757ff0caaa27b54
SHA5125f14243e1b00251879a566337b964019acdc277aff92d95e3e0afceb5fa6b562d621183ca0737d4988dc499b4a383ff94dec6254e0faaa2f8addf3add15106f2
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD56c549de3462a189387cc9914a2f81872
SHA1bf2150145e91b8be34e8328188930a23c0c385f9
SHA2567ad8ec9f8686ad924e553921c930d9732c6c2d740ffe1dff6757ff0caaa27b54
SHA5125f14243e1b00251879a566337b964019acdc277aff92d95e3e0afceb5fa6b562d621183ca0737d4988dc499b4a383ff94dec6254e0faaa2f8addf3add15106f2
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memory/2404-130-0x0000000000000000-mapping.dmp
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memory/2408-131-0x0000000000000000-mapping.dmp