wannacry | f4048bacc029767ce323bdf41326c012bed6be87e9a371a9af116e189692db85

Analysis

max time kernel
152s
max time network
159s
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 01:10

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General

Target

46f3bf3c094bc3fb9eb27f29bb4abb4f.dll
Size

5.0MB
MD5

46f3bf3c094bc3fb9eb27f29bb4abb4f
SHA1

1c9c0306803fec08347632c71fc8764070999eee
SHA256

f4048bacc029767ce323bdf41326c012bed6be87e9a371a9af116e189692db85
SHA512

3588fac826f716beda85fa369afa5032b66bce02a487b25b0cfe7b93ddc827d3acd91a72f960dd19434a2552a904559e05bc4bd611748dc55b0473d49e5a4cdd

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3225) 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

4232 mssecsvc.exe
4300 mssecsvc.exe
2080 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
4232	mssecsvc.exe
4300	mssecsvc.exe
2080	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
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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1328 wrote to memory of 5100	1328	rundll32.exe	rundll32.exe
PID 1328 wrote to memory of 5100	1328	rundll32.exe	rundll32.exe
PID 1328 wrote to memory of 5100	1328	rundll32.exe	rundll32.exe
PID 5100 wrote to memory of 4232	5100	rundll32.exe	mssecsvc.exe
PID 5100 wrote to memory of 4232	5100	rundll32.exe	mssecsvc.exe
PID 5100 wrote to memory of 4232	5100	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46f3bf3c094bc3fb9eb27f29bb4abb4f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\46f3bf3c094bc3fb9eb27f29bb4abb4f.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5100

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4232

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2080

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4300

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
a28af5c377074147c1a096825ec02300

SHA1
f62139232de0eb59a94309613c14ca9b850a7552

SHA256
d251254dfe8fbf16edfd6b08d7c55a7cce56b906c9f397ddb9078a8b616ec9c1

SHA512
5a45a35835801f7df1ac6803fac390156d2b34ac1da80c190317377d8274c57c52f2e3df8f01358004c7d433ce1472750c98b188463c7774551033703f9b5a5a

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

MD5
a28af5c377074147c1a096825ec02300

SHA1
f62139232de0eb59a94309613c14ca9b850a7552

SHA256
d251254dfe8fbf16edfd6b08d7c55a7cce56b906c9f397ddb9078a8b616ec9c1

SHA512
5a45a35835801f7df1ac6803fac390156d2b34ac1da80c190317377d8274c57c52f2e3df8f01358004c7d433ce1472750c98b188463c7774551033703f9b5a5a

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

MD5
a28af5c377074147c1a096825ec02300

SHA1
f62139232de0eb59a94309613c14ca9b850a7552

SHA256
d251254dfe8fbf16edfd6b08d7c55a7cce56b906c9f397ddb9078a8b616ec9c1

SHA512
5a45a35835801f7df1ac6803fac390156d2b34ac1da80c190317377d8274c57c52f2e3df8f01358004c7d433ce1472750c98b188463c7774551033703f9b5a5a

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

MD5
b91e13ab73037ff6d8fa366c15a71e0c

SHA1
6a3c91726bbabbdd7be906dd5043109b57168fac

SHA256
1ba99c726653eac71595e3faea3dbdec63dcb05c7619d396ef730ac46e166d31

SHA512
4cacf5005c3ccf4f483c04d65e451b13549766d9c87cd83024852df259c6455aae1f3530ebfde57f6c83ffd55f568baf746195269863c8894e339382a13bd269

Download Submit
memory/4232-131-0x0000000000000000-mapping.dmp

Download
memory/5100-130-0x0000000000000000-mapping.dmp

Download