052e54df0b86483f84bbff6504e202c36e7bc25885e369e830dd7086fb7c7562

Analysis

max time kernel
424s
max time network
450s
platform
windows11-21h2_x64
resource
win11-20231215-en
resource tags

arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
submitted
20-12-2023 01:43

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General

Target

817c226e42f5c503325288fd8273bc03b326590f457e7a589eb34c2792d0a5db.dll
Size

2.6MB
MD5

fea3a5c2bafa878b95e7084b5a5cb192
SHA1

bc2bd62464ab420e677753ada67f3bb345cf5080
SHA256

817c226e42f5c503325288fd8273bc03b326590f457e7a589eb34c2792d0a5db
SHA512

00d281f0d02619afa27e29faa8cd80ef48a449628308baa31c239c4930a8f3c031dadbb95ba194c3b0e00dba95a33ddd6715991ba9ab4a2daf06b430915c513a
SSDEEP

49152:sVSjcGsSEt3UQjAuD5Pa8G/5Dh+TNbtFs98e:sVYcwOJP67a

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

Processes:

rundll32.exe

flow pid process

2 6084 rundll32.exe
3 6084 rundll32.exe
4 6084 rundll32.exe
5 6084 rundll32.exe
8 6084 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4280 6084 WerFault.exe rundll32.exe

flow	pid	process
2	6084	rundll32.exe
3	6084	rundll32.exe
4	6084	rundll32.exe
5	6084	rundll32.exe
8	6084	rundll32.exe

pid	pid_target	process	target process
4280	6084	WerFault.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2201820139-2432375203-2549035866-1000\Software\Microsoft\Internet Explorer\DOMStorage\msn.com\NumberOfSubdomains = "1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2201820139-2432375203-2549035866-1000\Software\Microsoft\Internet Explorer\DOMStorage\msn.com	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2201820139-2432375203-2549035866-1000\Software\Microsoft\Internet Explorer\DOMStorage	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

rundll32.exe

pid process

6084 rundll32.exe
6084 rundll32.exe

pid	process
6084	rundll32.exe
6084	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 5536 wrote to memory of 6084	5536	rundll32.exe	rundll32.exe
PID 5536 wrote to memory of 6084	5536	rundll32.exe	rundll32.exe
PID 5536 wrote to memory of 6084	5536	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\817c226e42f5c503325288fd8273bc03b326590f457e7a589eb34c2792d0a5db.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5536

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\817c226e42f5c503325288fd8273bc03b326590f457e7a589eb34c2792d0a5db.dll,#1
2⤵
- Blocklisted process makes network request
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:6084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 6084 -s 2408
3⤵
- Program crash
PID:4280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 6084 -ip 6084
1⤵
PID:1608

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/6084-0-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

Filesize
4KB

Download
memory/6084-1-0x0000000000400000-0x000000000072C000-memory.dmp

Filesize
3.2MB

Download
memory/6084-16-0x0000000000400000-0x000000000072C000-memory.dmp

Filesize
3.2MB

Download
memory/6084-21-0x0000000000400000-0x000000000072C000-memory.dmp

Filesize
3.2MB

Download
memory/6084-22-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

Filesize
4KB

Download