Analysis
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max time kernel
150s -
max time network
152s -
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 00:19
Static task
static1
Behavioral task
behavioral1
Sample
444e7000f1959e9f80675efb71862ddf.dll
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
444e7000f1959e9f80675efb71862ddf.dll
Resource
win10v2004-20220718-en
General
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Target
444e7000f1959e9f80675efb71862ddf.dll
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Size
5.0MB
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MD5
444e7000f1959e9f80675efb71862ddf
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SHA1
a9a4a8cbd2debe03024590dc4409cc195de1ee82
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SHA256
a700d1f840a7ffd4990d0a05ee18af261c92a5c708c1465a107ffd88903959ea
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SHA512
d87af6fa3a7856859ad04892fc353f629883de23d4387e526acc0a879c4ea097dc46d74d76f1eff88160fca1cdb3ad728e63ddda197cabf511d803cd53f6580e
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3150) 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 2516 mssecsvr.exe 2696 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:
mssecsvr.exerundll32.exedescription ioc process File created C:\WINDOWS\tasksche.exe mssecsvr.exe File created C:\WINDOWS\mssecsvr.exe rundll32.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\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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2640 wrote to memory of 4244 2640 rundll32.exe rundll32.exe PID 2640 wrote to memory of 4244 2640 rundll32.exe rundll32.exe PID 2640 wrote to memory of 4244 2640 rundll32.exe rundll32.exe PID 4244 wrote to memory of 2516 4244 rundll32.exe mssecsvr.exe PID 4244 wrote to memory of 2516 4244 rundll32.exe mssecsvr.exe PID 4244 wrote to memory of 2516 4244 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\444e7000f1959e9f80675efb71862ddf.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2640 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\444e7000f1959e9f80675efb71862ddf.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2516
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2696
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD5c853f19eafdb740939aa66a8edafac47
SHA1710f513679f84ff781bf612ed48e3601dc0f8bc8
SHA25674a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda
SHA512be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5c853f19eafdb740939aa66a8edafac47
SHA1710f513679f84ff781bf612ed48e3601dc0f8bc8
SHA25674a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda
SHA512be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5c853f19eafdb740939aa66a8edafac47
SHA1710f513679f84ff781bf612ed48e3601dc0f8bc8
SHA25674a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda
SHA512be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1
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memory/2516-131-0x0000000000000000-mapping.dmp
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memory/4244-130-0x0000000000000000-mapping.dmp