e63a3a9f0c89ff358005e976f7a3e7666b3a135d25c4394fbc120b6089ac71c1

Analysis

max time kernel
44s
max time network
48s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 03:33

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General

Target

e63a3a9f0c89ff358005e976f7a3e7666b3a135d25c4394fbc120b6089ac71c1.dll
Size

4.3MB
MD5

64f196646947529c6c4d21188ec9c4dd
SHA1

f2db17ef0dc389ba1e76879cbe400d1031249977
SHA256

e63a3a9f0c89ff358005e976f7a3e7666b3a135d25c4394fbc120b6089ac71c1
SHA512

c04f8c8fb9036921fd0f9e87d9935403022336cc8bdbe13d20c7311d04ef8a65cfda2a8b45e068d02ce9507693e92222583703064dac9e22edeed2a54b063da8
SSDEEP

98304:uBu6l4QWOabPG1f5edNM/Cw/khc5FbKEQ26PVR7m6gZ1MRGNCyI5AxV3001fiofB:qYQeohedNM/Cw/khc5FbKEV6PVR7m6gr

Score

6^/10

bootkit persistence

Malware Config

Signatures

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

2028 844 WerFault.exe rundll32.exe

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

pid	pid_target	process	target process
2028	844	WerFault.exe	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 1348 wrote to memory of 844	1348	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 2028	844	rundll32.exe	WerFault.exe
PID 844 wrote to memory of 2028	844	rundll32.exe	WerFault.exe
PID 844 wrote to memory of 2028	844	rundll32.exe	WerFault.exe
PID 844 wrote to memory of 2028	844	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e63a3a9f0c89ff358005e976f7a3e7666b3a135d25c4394fbc120b6089ac71c1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e63a3a9f0c89ff358005e976f7a3e7666b3a135d25c4394fbc120b6089ac71c1.dll,#1
2⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 844 -s 356
3⤵
- Program crash
PID:2028

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/844-54-0x0000000000000000-mapping.dmp

Download
memory/844-55-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

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memory/2028-56-0x0000000000000000-mapping.dmp

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