wannacry | 7bca723c443984f5a4215d464144ef23b03677eaabd81e64a9734b634a41b6ea

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
19-07-2022 23:36

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General

Target

2c15a641e3cc97fc712befb38e937fd9.dll
Size

5.0MB
MD5

2c15a641e3cc97fc712befb38e937fd9
SHA1

680b67126d68cc02d38dbd68d082898362a59d2a
SHA256

7bca723c443984f5a4215d464144ef23b03677eaabd81e64a9734b634a41b6ea
SHA512

bdcc728f43365f5d829cefd3617c7d8c12d6ec8f98126c261f09e33a4f9917ce745aad730fed2c9444e7cd690d08a0e51672ee980e91932e167786b189a9cbb1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2038) 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

4228 mssecsvc.exe
4992 mssecsvc.exe
4724 tasksche.exe
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
4228	mssecsvc.exe
4992	mssecsvc.exe
4724	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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2084 wrote to memory of 4876	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 4876	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 4876	2084	rundll32.exe	rundll32.exe
PID 4876 wrote to memory of 4228	4876	rundll32.exe	mssecsvc.exe
PID 4876 wrote to memory of 4228	4876	rundll32.exe	mssecsvc.exe
PID 4876 wrote to memory of 4228	4876	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2c15a641e3cc97fc712befb38e937fd9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2084

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2c15a641e3cc97fc712befb38e937fd9.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4876

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4228

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4724

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4992

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
85b75685f5a927cab4ea3db5ee2e8f0e

SHA1
370037a134cfe40c34ec99df4df1d67c77281295

SHA256
2821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094

SHA512
b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89

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

MD5
85b75685f5a927cab4ea3db5ee2e8f0e

SHA1
370037a134cfe40c34ec99df4df1d67c77281295

SHA256
2821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094

SHA512
b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89

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

MD5
85b75685f5a927cab4ea3db5ee2e8f0e

SHA1
370037a134cfe40c34ec99df4df1d67c77281295

SHA256
2821c550c382be82227c62fd07eff111248ca5143350a31efdc8f7cc74e7a094

SHA512
b7d24e1b4d8f18bb9bbfc28bf0804df4a0a1455f2e3e5c95a9450d066daf9ad65625d998f6b33b09e3facadbd5d9c2bd1c495c73502bc40826ac07fbe8432b89

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

MD5
f054217c3a7ff740ac81884141938371

SHA1
00ec4910a006d15055dcbd205880bc2ec77e3076

SHA256
cf6871b2011daab59ca68082ea8b01052fe2c8eb03f512768a5bde4c8e7843b4

SHA512
13399a737f4421a1b057985d32c8bf3a8152adfe614e08a68f10c8e6c64051fb6ac5189852453a2c0fb50de46c28e2fe4ec3a5efb46173772334114793446755

Download Submit
memory/4228-131-0x0000000000000000-mapping.dmp

Download
memory/4876-130-0x0000000000000000-mapping.dmp

Download