46a2ef76412b88068194c79780e29ac7307831849da46b189567b11c87b678b7 | Triage

Analysis

max time kernel
133s
max time network
143s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
20-04-2024 10:39

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General

Target

Crystal disk/CdiResource/dll/JMB39x86.dll
Size

192KB
MD5

22a5906eac20548f6226075b1e8c5816
SHA1

2f5ab8cadfedb6fbafe93c508295d31a0fe30e2c
SHA256

e75febe04858e6b5d081040d52912558eb89f216467704438d0c3eed8d599bc6
SHA512

0dbead5b5eea325e438de10467b7c90d60b8b4d1f5b35c96e69887c2589a9bcc808ade5514461aa99eca66df0b686d8a1ccb64d89ff2336292dfd96f0183638c
SSDEEP

6144:BH5x6ZaMCvvMHhcmNhw9eE/NGd0kUbiLJ:BH+Phw9ezPUe

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4864 3004 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1068 wrote to memory of 3004	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 3004	1068	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 3004	1068	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Crystal disk\CdiResource\dll\JMB39x86.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1068

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Crystal disk\CdiResource\dll\JMB39x86.dll",#1
2⤵
PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3004 -s 624
3⤵
- Program crash
PID:4864

Network

MITRE ATT&CK Matrix

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