wannacry | eea8b675458d178fe1e1ef2cabe5243bd12e1d54f35c69d01d544d467d0a4c56

Analysis

max time kernel
150s
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 03:17

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General

Target

722b31954ed4c69acd0fbcf17da21498.dll
Size

5.0MB
MD5

722b31954ed4c69acd0fbcf17da21498
SHA1

8a11f9b56728b8210689cc7c37d81668f9db3b03
SHA256

eea8b675458d178fe1e1ef2cabe5243bd12e1d54f35c69d01d544d467d0a4c56
SHA512

70bd9370a0a0242cbe32bdb4b5ef9efc7d0efda6951bbbd88e5c020f79fceb082a1bf6b50d881b57cba46fc916f9acf8c216d34ddda9ebb5cf6a4c326efa2a47

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) 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

1544 mssecsvc.exe
4980 mssecsvc.exe
4612 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
1544	mssecsvc.exe
4980	mssecsvc.exe
4612	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 1736 wrote to memory of 872	1736	rundll32.exe	rundll32.exe
PID 1736 wrote to memory of 872	1736	rundll32.exe	rundll32.exe
PID 1736 wrote to memory of 872	1736	rundll32.exe	rundll32.exe
PID 872 wrote to memory of 1544	872	rundll32.exe	mssecsvc.exe
PID 872 wrote to memory of 1544	872	rundll32.exe	mssecsvc.exe
PID 872 wrote to memory of 1544	872	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\722b31954ed4c69acd0fbcf17da21498.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\722b31954ed4c69acd0fbcf17da21498.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:872

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1544

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4612

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4980

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
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

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

MD5
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

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

MD5
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

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

MD5
37f931e90384f9c2b4e4faa8d7330579

SHA1
222fbd46a9ef1ee4c3f0da7b8546986f64fea55f

SHA256
a6a04c7b2efdab082346b54ebecf7a864afc99c10046395cba6939481bc40d48

SHA512
4589f746e930c31d0c1e86cb2f4a9bb13da6fb6e2b251b20dbf4f9297a2aa30884f6f6cd3a0c4d35dfc9583917e114b1d628b13485c0406029ac28100294e292

Download Submit
memory/872-130-0x0000000000000000-mapping.dmp

Download
memory/1544-131-0x0000000000000000-mapping.dmp

Download