221cbbb460e56a0da3a319868bcd8cc655aea7c9903a897cdbbed1507caec41a

Analysis

max time kernel
180s
max time network
192s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 20:31

Target

221cbbb460e56a0da3a319868bcd8cc655aea7c9903a897cdbbed1507caec41a.dll
Size

1.3MB
MD5

77c65616770bccfb5a9a0c77ae5bc263
SHA1

8029b4c149b08ac01e270230ea0885a72c1c5229
SHA256

221cbbb460e56a0da3a319868bcd8cc655aea7c9903a897cdbbed1507caec41a
SHA512

b357ef1b8c6026cb9ac34f998e22e4f738bdcdfbaa036633b25d97ff3eee12db4e6a39ad8752f26a1de1dd30e97ddd17ee84310c8087d75b8e80e2ad0777f2c8
SSDEEP

24576:EZWmSs4phYgGwpDaO9l11Vy3gJu7Hjrmd9KIf1bKLauR:EZiCgnuOL1CgJ/sC1bkau

Score

6^/10

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PhysicalDrive0 rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

5108 3108 WerFault.exe rundll32.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

pid	pid_target	process	target process
5108	3108	WerFault.exe	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 5048 wrote to memory of 3108	5048	rundll32.exe	rundll32.exe
PID 5048 wrote to memory of 3108	5048	rundll32.exe	rundll32.exe
PID 5048 wrote to memory of 3108	5048	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\221cbbb460e56a0da3a319868bcd8cc655aea7c9903a897cdbbed1507caec41a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5048

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\221cbbb460e56a0da3a319868bcd8cc655aea7c9903a897cdbbed1507caec41a.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
PID:3108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3108 -s 628
3⤵
- Program crash
PID:5108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3108 -ip 3108
1⤵
PID:2436

Initial Access

Execution

Persistence

Bootkit

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact