Analysis
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max time kernel
157s -
max time network
161s -
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 03:13
Static task
static1
Behavioral task
behavioral1
Sample
bce1446990c3f94fea843f53eee70e14.dll
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
bce1446990c3f94fea843f53eee70e14.dll
Resource
win10v2004-20220718-en
General
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Target
bce1446990c3f94fea843f53eee70e14.dll
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Size
5.0MB
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MD5
bce1446990c3f94fea843f53eee70e14
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SHA1
a6b5891732e8830163d223b517a8ba99f8b750d3
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SHA256
7568615ba6f5281a2d9efcbbe690325417b70a9e2637b67eaee41f7690f3215b
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SHA512
dcc68ea4f0c0de4f9143324b5cd04f00c0c7dc41c49d57004bb3acd39350c455eb1ad7953dcef250f73a2307766ceffab34f78a2073e3244eaa9522d7c09c9c3
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3209) 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 3616 mssecsvr.exe 3780 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\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 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" mssecsvr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2940 wrote to memory of 4772 2940 rundll32.exe rundll32.exe PID 2940 wrote to memory of 4772 2940 rundll32.exe rundll32.exe PID 2940 wrote to memory of 4772 2940 rundll32.exe rundll32.exe PID 4772 wrote to memory of 3616 4772 rundll32.exe mssecsvr.exe PID 4772 wrote to memory of 3616 4772 rundll32.exe mssecsvr.exe PID 4772 wrote to memory of 3616 4772 rundll32.exe mssecsvr.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bce1446990c3f94fea843f53eee70e14.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bce1446990c3f94fea843f53eee70e14.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
MD56409170ec60d0896cd981d2395f8bacc
SHA1b2cd021402934c0564c905c2e422bdece94c8a23
SHA256ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18
SHA512c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD56409170ec60d0896cd981d2395f8bacc
SHA1b2cd021402934c0564c905c2e422bdece94c8a23
SHA256ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18
SHA512c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55
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C:\Windows\mssecsvr.exeFilesize
2.2MB
MD56409170ec60d0896cd981d2395f8bacc
SHA1b2cd021402934c0564c905c2e422bdece94c8a23
SHA256ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18
SHA512c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55
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memory/3616-131-0x0000000000000000-mapping.dmp
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memory/4772-130-0x0000000000000000-mapping.dmp