wannacry | 9782298315b127534cfb24720e76e4cc946f71a72126da11f9bcb738b94d6b49

Analysis

max time kernel
150s
max time network
153s
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 03:22

Target

9d2833555fc41bce3dace0a1b327102d.dll
Size

5.0MB
MD5

9d2833555fc41bce3dace0a1b327102d
SHA1

1d6566dd33f8fed825e75f230155f2adb1a1e4d3
SHA256

9782298315b127534cfb24720e76e4cc946f71a72126da11f9bcb738b94d6b49
SHA512

3ce4ccead3e7de1c565c592e130f205dbddc380b66e7865442aea9400a17d8d52d435ed43aa4342badca26acb3bc42f27e9cecfa5207e781ad8e82a65b9d7c0c

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3190) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

4164 mssecsvr.exe
2984 mssecsvr.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

pid	process
4164	mssecsvr.exe
2984	mssecsvr.exe

description	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.exe

description	ioc	process
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3900 wrote to memory of 3036	3900	rundll32.exe	rundll32.exe
PID 3900 wrote to memory of 3036	3900	rundll32.exe	rundll32.exe
PID 3900 wrote to memory of 3036	3900	rundll32.exe	rundll32.exe
PID 3036 wrote to memory of 4164	3036	rundll32.exe	mssecsvr.exe
PID 3036 wrote to memory of 4164	3036	rundll32.exe	mssecsvr.exe
PID 3036 wrote to memory of 4164	3036	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d2833555fc41bce3dace0a1b327102d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3900

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
f991c2a04bfec216342e47bf4ec80568

SHA1
8050130e18661d06083fefe5ca170cb5cab40615

SHA256
1686c09b344a6d2d52a6cfc62edc527174f1fedc70d24cbef04025c72aba369d

SHA512
dad456d37c6fddb66189307ae29af230b8ea52061a0af0c74af4d12e27ab97e17930af594d1241202f55d51244d0be7ea0d0c67110fdceed78fbe0ef4ecb568b

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
f991c2a04bfec216342e47bf4ec80568

SHA1
8050130e18661d06083fefe5ca170cb5cab40615

SHA256
1686c09b344a6d2d52a6cfc62edc527174f1fedc70d24cbef04025c72aba369d

SHA512
dad456d37c6fddb66189307ae29af230b8ea52061a0af0c74af4d12e27ab97e17930af594d1241202f55d51244d0be7ea0d0c67110fdceed78fbe0ef4ecb568b

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
f991c2a04bfec216342e47bf4ec80568

SHA1
8050130e18661d06083fefe5ca170cb5cab40615

SHA256
1686c09b344a6d2d52a6cfc62edc527174f1fedc70d24cbef04025c72aba369d

SHA512
dad456d37c6fddb66189307ae29af230b8ea52061a0af0c74af4d12e27ab97e17930af594d1241202f55d51244d0be7ea0d0c67110fdceed78fbe0ef4ecb568b

Download Submit
memory/3036-130-0x0000000000000000-mapping.dmp

Download
memory/4164-131-0x0000000000000000-mapping.dmp

Download