wannacry | 3cc41535d45641cd4feeaaddc518b537e73157af9c9c293c5752df9f9d89b8d3

Analysis

max time kernel
150s
max time network
153s
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 02:05

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General

Target

5e2fc4083c7a3d3ae48db936719e9afe.dll
Size

5.0MB
MD5

5e2fc4083c7a3d3ae48db936719e9afe
SHA1

35235de1a0d049e206c71e2d4a59fbdfe313dc9a
SHA256

3cc41535d45641cd4feeaaddc518b537e73157af9c9c293c5752df9f9d89b8d3
SHA512

2fc59371b02522b3a88a2e78dc7b1c77b5068109d56ed9967ddc1dbd6f381ddd2e9cd740735940f9b6afdb8a4bf6f661f16f606a9d653f585d926d57a88fe0ba

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3229) 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

4200 mssecsvc.exe
4112 mssecsvc.exe
5104 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
4200	mssecsvc.exe
4112	mssecsvc.exe
5104	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 3044 wrote to memory of 4116	3044	rundll32.exe	rundll32.exe
PID 3044 wrote to memory of 4116	3044	rundll32.exe	rundll32.exe
PID 3044 wrote to memory of 4116	3044	rundll32.exe	rundll32.exe
PID 4116 wrote to memory of 4200	4116	rundll32.exe	mssecsvc.exe
PID 4116 wrote to memory of 4200	4116	rundll32.exe	mssecsvc.exe
PID 4116 wrote to memory of 4200	4116	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e2fc4083c7a3d3ae48db936719e9afe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3044

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e2fc4083c7a3d3ae48db936719e9afe.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4116

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4200

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:5104

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4112

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
06711856e7b3cd075b62432c991bea0f

SHA1
2309d57e39bb99f5c0e38f92cbd43263c2bdcee6

SHA256
ed0e16d75612cc00c3b92016726d3ac29e108fbc964acab850f6357326959b11

SHA512
4aed31b6ed683b7d17ed51091f98fb6f53f621f0fb2bbb2cd2f205c622e046c95a3e3873391e30b830903f6676a44a5c2a099d7a7c614e12668d46a96e199dd9

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
06711856e7b3cd075b62432c991bea0f

SHA1
2309d57e39bb99f5c0e38f92cbd43263c2bdcee6

SHA256
ed0e16d75612cc00c3b92016726d3ac29e108fbc964acab850f6357326959b11

SHA512
4aed31b6ed683b7d17ed51091f98fb6f53f621f0fb2bbb2cd2f205c622e046c95a3e3873391e30b830903f6676a44a5c2a099d7a7c614e12668d46a96e199dd9

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
06711856e7b3cd075b62432c991bea0f

SHA1
2309d57e39bb99f5c0e38f92cbd43263c2bdcee6

SHA256
ed0e16d75612cc00c3b92016726d3ac29e108fbc964acab850f6357326959b11

SHA512
4aed31b6ed683b7d17ed51091f98fb6f53f621f0fb2bbb2cd2f205c622e046c95a3e3873391e30b830903f6676a44a5c2a099d7a7c614e12668d46a96e199dd9

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
b7d5149cc560e814dfb249951f8fa31c

SHA1
00affa7e8af78f9e93d1a7f1a5641e076deef84e

SHA256
37d5a9743a6b1042de662def353524da39b3d183249f67d5c79179426fcd6ec0

SHA512
55701686b1f4189f1ac1c46a9aa9e0bcef84d7d3ef8a739960d7ba1cece020be5a8aaaefb025dbe51e47c298c2feeb1520a35453ab75c09a20c09f2a8f573ed2

Download Submit
memory/4116-130-0x0000000000000000-mapping.dmp

Download
memory/4200-131-0x0000000000000000-mapping.dmp

Download