wannacry | 357e6d6022b3316f7859567b079785dd53bff98f08420e94411393ea86c27ab1

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 02:06

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General

Target

e094e4a8ec58eaa7eefe454584abd195.dll
Size

5.0MB
MD5

e094e4a8ec58eaa7eefe454584abd195
SHA1

c2567e5b7dcc8f96b5f2d7957f0af7fea90ebd62
SHA256

357e6d6022b3316f7859567b079785dd53bff98f08420e94411393ea86c27ab1
SHA512

47596fdddd8ce116aff4e38e7bba228c214c1ef1469ff013acce497e1a3c54a56a64103812421f47185b9dc5e34b895e8ec0b6c96272e3bee808041ce45a6da8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3175) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

4276 mssecsvc.exe
2084 mssecsvc.exe
4432 tasksche.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.exemssecsvc.exe

description ioc process

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

pid	process
4276	mssecsvc.exe
2084	mssecsvc.exe
4432	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4192 wrote to memory of 5028	4192	rundll32.exe	rundll32.exe
PID 4192 wrote to memory of 5028	4192	rundll32.exe	rundll32.exe
PID 4192 wrote to memory of 5028	4192	rundll32.exe	rundll32.exe
PID 5028 wrote to memory of 4276	5028	rundll32.exe	mssecsvc.exe
PID 5028 wrote to memory of 4276	5028	rundll32.exe	mssecsvc.exe
PID 5028 wrote to memory of 4276	5028	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e094e4a8ec58eaa7eefe454584abd195.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4192

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e094e4a8ec58eaa7eefe454584abd195.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5028

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4276

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4432

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
eb16fb9581ee95013c2ab71f234b2ee4

SHA1
df01ab976a9e37359137a836b613b1510304cd16

SHA256
bb344f6062521f68edf454eeada01906bf2f1b4fa2cfffdc2632414a1d7be235

SHA512
39fcf5a425ee5e6789b52f85873acfdb56b39b3df440ae2defa530ae4010d77b3b6ef5a89edd12e16a8586b47c102e7058ed10a3e24b03eea691623a9028d946

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
eb16fb9581ee95013c2ab71f234b2ee4

SHA1
df01ab976a9e37359137a836b613b1510304cd16

SHA256
bb344f6062521f68edf454eeada01906bf2f1b4fa2cfffdc2632414a1d7be235

SHA512
39fcf5a425ee5e6789b52f85873acfdb56b39b3df440ae2defa530ae4010d77b3b6ef5a89edd12e16a8586b47c102e7058ed10a3e24b03eea691623a9028d946

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
eb16fb9581ee95013c2ab71f234b2ee4

SHA1
df01ab976a9e37359137a836b613b1510304cd16

SHA256
bb344f6062521f68edf454eeada01906bf2f1b4fa2cfffdc2632414a1d7be235

SHA512
39fcf5a425ee5e6789b52f85873acfdb56b39b3df440ae2defa530ae4010d77b3b6ef5a89edd12e16a8586b47c102e7058ed10a3e24b03eea691623a9028d946

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9ec61d175dffa53f92b6d981c9ea7277

SHA1
dcff4095da62ef84dc3c7ec85c56aa855a4f0de4

SHA256
5fb4d6fbd55f0921eac1b5eadfc120e68f2b53dc7f72005865419be34b449ea6

SHA512
0e368c8fc592ebe8937f6afb5c37cca03de4b3d82840c6a24004be7ed979619d29940f8db6bc88ac224c9cfea77bb45a9e5f8dde26cf10035cc47015e5489b97

Download Submit
memory/4276-131-0x0000000000000000-mapping.dmp

Download
memory/5028-130-0x0000000000000000-mapping.dmp

Download