wannacry | 8de495d0f6c9b65bd1e5ef586b1f05864c0fb50485b8d71097c94ee2ca99121a

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
20-07-2022 02:54

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General

Target

d71fc96dcd0ac37af94750945b4a3dd9.dll
Size

5.0MB
MD5

d71fc96dcd0ac37af94750945b4a3dd9
SHA1

ab2e4824ecdb79267593c4d221202adcf8d5c6a4
SHA256

8de495d0f6c9b65bd1e5ef586b1f05864c0fb50485b8d71097c94ee2ca99121a
SHA512

5ed0804219d5d65c8ed4fe2e46c03a6f15f5cc2604bdc321acba658242fcdb00702b718bc9da3f88d5e13ebf3f5589cc902f71c7b3947b3f87ab355e0bb07d3d

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3219) 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

4452 mssecsvc.exe
1136 mssecsvc.exe
4180 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
4452	mssecsvc.exe
1136	mssecsvc.exe
4180	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3104 wrote to memory of 4376	3104	rundll32.exe	rundll32.exe
PID 3104 wrote to memory of 4376	3104	rundll32.exe	rundll32.exe
PID 3104 wrote to memory of 4376	3104	rundll32.exe	rundll32.exe
PID 4376 wrote to memory of 4452	4376	rundll32.exe	mssecsvc.exe
PID 4376 wrote to memory of 4452	4376	rundll32.exe	mssecsvc.exe
PID 4376 wrote to memory of 4452	4376	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d71fc96dcd0ac37af94750945b4a3dd9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3104

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d71fc96dcd0ac37af94750945b4a3dd9.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4376

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4452

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4180

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
PID:1136

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
c848124eba9515bfb134be8692777608

SHA1
2806978d37e083b30d583b0cd63f3ab808502b41

SHA256
f2616af49773846acc9a3b59cfc8be589724f4e7308ac89f18decb2e40140885

SHA512
b6e40ec538e2b2f63b5a92ec16c2d179a84cb2e1b9e3c7b01bb4c72c48b2a0825294f365fd17a301fc1fe42e28c50f7329ef0bffaeb713051d41e94e46a28c1f

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
c848124eba9515bfb134be8692777608

SHA1
2806978d37e083b30d583b0cd63f3ab808502b41

SHA256
f2616af49773846acc9a3b59cfc8be589724f4e7308ac89f18decb2e40140885

SHA512
b6e40ec538e2b2f63b5a92ec16c2d179a84cb2e1b9e3c7b01bb4c72c48b2a0825294f365fd17a301fc1fe42e28c50f7329ef0bffaeb713051d41e94e46a28c1f

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
c848124eba9515bfb134be8692777608

SHA1
2806978d37e083b30d583b0cd63f3ab808502b41

SHA256
f2616af49773846acc9a3b59cfc8be589724f4e7308ac89f18decb2e40140885

SHA512
b6e40ec538e2b2f63b5a92ec16c2d179a84cb2e1b9e3c7b01bb4c72c48b2a0825294f365fd17a301fc1fe42e28c50f7329ef0bffaeb713051d41e94e46a28c1f

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
8c1273ee16cdc804a0baf74c6ec808a7

SHA1
d824bf29c6eb16d12d1393324c52181b5710239e

SHA256
5aeb1477f825598a6b4b00603428ba26875c4755f7ecc25c1670da182b54290d

SHA512
6cb18d81fc76d6054a75cbf3c8f22d8725c5570d6cd2718186e998cb8b30ebd2974ef616c874ac78b34a8bd673300794c2063e03f552085d3eabb7609f1abba0

Download Submit
memory/4376-130-0x0000000000000000-mapping.dmp

Download
memory/4452-131-0x0000000000000000-mapping.dmp

Download