Analysis
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max time kernel
156s -
max time network
160s -
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 01:36
Static task
static1
Behavioral task
behavioral1
Sample
9c27887058bdc8efa7761da28e613994.dll
Resource
win7-20220718-en
Behavioral task
behavioral2
Sample
9c27887058bdc8efa7761da28e613994.dll
Resource
win10v2004-20220718-en
General
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Target
9c27887058bdc8efa7761da28e613994.dll
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Size
5.0MB
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MD5
9c27887058bdc8efa7761da28e613994
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SHA1
01be4b3c0fd62ff481450e646453d4e3651b5713
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SHA256
121185201c29380e366cdee4e00038fd7aedb191e67498ba97bf85c16e39db6c
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SHA512
59c6f7a6f592db777d7802faeef6f3507f4c7d4db9ea2edf4cd685d7220e0c5238cb7fa27b8bce3a2fa87a3fbd8caf4a510bb28efee0a9a0f4df593355ea2d7a
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (2849) 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 2172 mssecsvr.exe 3036 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 1156 wrote to memory of 4412 1156 rundll32.exe rundll32.exe PID 1156 wrote to memory of 4412 1156 rundll32.exe rundll32.exe PID 1156 wrote to memory of 4412 1156 rundll32.exe rundll32.exe PID 4412 wrote to memory of 2172 4412 rundll32.exe mssecsvr.exe PID 4412 wrote to memory of 2172 4412 rundll32.exe mssecsvr.exe PID 4412 wrote to memory of 2172 4412 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9c27887058bdc8efa7761da28e613994.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1156 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9c27887058bdc8efa7761da28e613994.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4412 -
C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2172
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C:\WINDOWS\mssecsvr.exeC:\WINDOWS\mssecsvr.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3036
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\WINDOWS\mssecsvr.exeFilesize
2.2MB
MD5074660125e8b575e6cb1a4af9094a7e9
SHA13aa024f4e7b5282c6b3450246492b29783017b6c
SHA256b4c63d4a7eeffef514ca7be622e4d3331af935565ded5d233e8a21d27a481af4
SHA5120494fe133dab8e1b7bf30f4ff6ee2ba0530e64324df44f86a253f763e152c8b6a2f329f0895bd145656deaa72d40221d6743f2adfc966887c2a0e0986b596de3
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5074660125e8b575e6cb1a4af9094a7e9
SHA13aa024f4e7b5282c6b3450246492b29783017b6c
SHA256b4c63d4a7eeffef514ca7be622e4d3331af935565ded5d233e8a21d27a481af4
SHA5120494fe133dab8e1b7bf30f4ff6ee2ba0530e64324df44f86a253f763e152c8b6a2f329f0895bd145656deaa72d40221d6743f2adfc966887c2a0e0986b596de3
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD5074660125e8b575e6cb1a4af9094a7e9
SHA13aa024f4e7b5282c6b3450246492b29783017b6c
SHA256b4c63d4a7eeffef514ca7be622e4d3331af935565ded5d233e8a21d27a481af4
SHA5120494fe133dab8e1b7bf30f4ff6ee2ba0530e64324df44f86a253f763e152c8b6a2f329f0895bd145656deaa72d40221d6743f2adfc966887c2a0e0986b596de3
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memory/2172-131-0x0000000000000000-mapping.dmp
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memory/4412-130-0x0000000000000000-mapping.dmp