wannacry | 633b81cf245a7c616d6ec09ac4a2093d4b1b5f484f81c9b7f4ad142e8a5b0f0d

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 03:15

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General

Target

a9097ff46602fea3fb6e59ecc29d15b7.dll
Size

5.0MB
MD5

a9097ff46602fea3fb6e59ecc29d15b7
SHA1

03acf8a9a382461e4d1980be39472f7c0490c766
SHA256

633b81cf245a7c616d6ec09ac4a2093d4b1b5f484f81c9b7f4ad142e8a5b0f0d
SHA512

462ea792b18377673603f2d3db3ca714ea92eae8a429e2f896cff7127679465951a78703def597d4d9fde30f07aabef30a37b20a5df580e6ea9941a49af4ed11

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3302) 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

4944 mssecsvc.exe
3008 mssecsvc.exe
4688 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:

mssecsvc.exerundll32.exe

description ioc process

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

pid	process
4944	mssecsvc.exe
3008	mssecsvc.exe
4688	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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 2744 wrote to memory of 444	2744	rundll32.exe	rundll32.exe
PID 2744 wrote to memory of 444	2744	rundll32.exe	rundll32.exe
PID 2744 wrote to memory of 444	2744	rundll32.exe	rundll32.exe
PID 444 wrote to memory of 4944	444	rundll32.exe	mssecsvc.exe
PID 444 wrote to memory of 4944	444	rundll32.exe	mssecsvc.exe
PID 444 wrote to memory of 4944	444	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9097ff46602fea3fb6e59ecc29d15b7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2744

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9097ff46602fea3fb6e59ecc29d15b7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:444

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4944

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4688

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3008

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

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

MD5
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

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

MD5
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

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

MD5
94fe89675454f565792ceffe88f4ff8d

SHA1
888967d3ee02ea27602cc7a7897ac28f3ac02a9b

SHA256
ad823ae6518d2a3c55600ca0898a3fa6526df57237826f03ba7aa0f139039048

SHA512
8ab9167385244b75574806a30602dd7786092053649b543f1e6e383bea19c110d573d4f0c78cf36497c62f26b9d51fc74c5a530e342ccf32db4f5a09799dcfeb

Download Submit
memory/444-130-0x0000000000000000-mapping.dmp

Download
memory/4944-131-0x0000000000000000-mapping.dmp

Download