wannacry | 33b06096ea66dae40a349d477d7daa7a6616b8b9e11ba2f14d183e0cea553d3d

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
24-07-2024 22:20

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General

Target

6d0270440e080a1b40a9389a830eeb54_JaffaCakes118.dll
Size

5.0MB
MD5

6d0270440e080a1b40a9389a830eeb54
SHA1

650413cc676c3c6020f997fdcda7a222531d769f
SHA256

33b06096ea66dae40a349d477d7daa7a6616b8b9e11ba2f14d183e0cea553d3d
SHA512

e4bc2729c914a9b91d397f499d65f55a5bf54452763ed70aff78cee442e31d39e8bfa492f2ed5b923acd038f36669a5e9da49906d0527e2626fb7bb6c9ec61ae
SSDEEP

98304:T8qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:T8qPe1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3305) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2108 mssecsvc.exe
2492 mssecsvc.exe
3996 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 Discovery
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
2108	mssecsvc.exe
2492	mssecsvc.exe
3996	tasksche.exe

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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

mssecsvc.exemssecsvc.exerundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4408 wrote to memory of 2644	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 2644	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 2644	4408	rundll32.exe	rundll32.exe
PID 2644 wrote to memory of 2108	2644	rundll32.exe	mssecsvc.exe
PID 2644 wrote to memory of 2108	2644	rundll32.exe	mssecsvc.exe
PID 2644 wrote to memory of 2108	2644	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6d0270440e080a1b40a9389a830eeb54_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4408

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6d0270440e080a1b40a9389a830eeb54_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2644

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2108

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3996

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e6012315930c5b2a7d584e704ac5fb8c

SHA1
777b3a7aaf869da2ddff6b63c6e2587317d550c5

SHA256
df7bb854097066e444e43f2efd1d0e44a81b2f2ff59c8fa294ea1a9ea047fd7a

SHA512
49c6d31c4257cf0914e900b83c32cc53149282b56603a1cf92f810e8266fe69480a8faa87bbc0f4bab71c70812e582c899878971db38919138416bb829073165

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

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