wannacry | fc6925466cd3b0991a740ba4c92fa5930d7e919574e78ea5b16285181e32ca4d

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
19-07-2022 23:41

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General

Target

181bdb0bb45f29d41b5d1a0830e58ba7.dll
Size

5.0MB
MD5

181bdb0bb45f29d41b5d1a0830e58ba7
SHA1

7d50515b1da7296c81d49931536ce90fe60772e0
SHA256

fc6925466cd3b0991a740ba4c92fa5930d7e919574e78ea5b16285181e32ca4d
SHA512

ce0a5346b7352f22f3b07fc6bc0977a209bb863f53d8f3e5b8b593fc23bb01187826b81c5e1258a5554b718af3d1ba931159007378dd2dbf107606d856fa7dc1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3220) 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

756 mssecsvc.exe
1620 mssecsvc.exe
4092 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
756	mssecsvc.exe
1620	mssecsvc.exe
4092	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 2124 wrote to memory of 2224	2124	rundll32.exe	rundll32.exe
PID 2124 wrote to memory of 2224	2124	rundll32.exe	rundll32.exe
PID 2124 wrote to memory of 2224	2124	rundll32.exe	rundll32.exe
PID 2224 wrote to memory of 756	2224	rundll32.exe	mssecsvc.exe
PID 2224 wrote to memory of 756	2224	rundll32.exe	mssecsvc.exe
PID 2224 wrote to memory of 756	2224	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\181bdb0bb45f29d41b5d1a0830e58ba7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2124

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\181bdb0bb45f29d41b5d1a0830e58ba7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2224

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:756

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4092

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1620

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
dfdd4023897871bab56080fc0185b3a6

SHA1
e43701e94be3456f80ba6d940f52ca0690a3895c

SHA256
a6e60d6165c17d58e38ec1322e4dd44d8412c76ab2064202966b7ddd4f3e67cf

SHA512
6060039041354262442a0dd0653ee547356e5d1526257861703077fe2ac1222390871ba67c78f0e93a00bbc33f2d9fcc123a6896a9bfe0934073e4ec2aba5d75

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
dfdd4023897871bab56080fc0185b3a6

SHA1
e43701e94be3456f80ba6d940f52ca0690a3895c

SHA256
a6e60d6165c17d58e38ec1322e4dd44d8412c76ab2064202966b7ddd4f3e67cf

SHA512
6060039041354262442a0dd0653ee547356e5d1526257861703077fe2ac1222390871ba67c78f0e93a00bbc33f2d9fcc123a6896a9bfe0934073e4ec2aba5d75

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
dfdd4023897871bab56080fc0185b3a6

SHA1
e43701e94be3456f80ba6d940f52ca0690a3895c

SHA256
a6e60d6165c17d58e38ec1322e4dd44d8412c76ab2064202966b7ddd4f3e67cf

SHA512
6060039041354262442a0dd0653ee547356e5d1526257861703077fe2ac1222390871ba67c78f0e93a00bbc33f2d9fcc123a6896a9bfe0934073e4ec2aba5d75

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
70e0f5241de06447674f0e8c6dbe8ef6

SHA1
597065fec625783223b9b2ef987de0b49ef472fc

SHA256
e4033409984bed86fe721d6cf74f7b6676320174f94146fbca9bdab3a7320843

SHA512
e3fb27959cb54a37dc00e87255c31423ca844168defcf0c813148349b27d8892e9d8433c5a0a8149e32a55f42d105995c8f8691e05fecabe32ad9e83ad81c572

Download Submit
memory/756-131-0x0000000000000000-mapping.dmp

Download
memory/2224-130-0x0000000000000000-mapping.dmp

Download