46f18091cf10d22dfb79b372c9c0d44f3547ec2fb9f0f7c772ef08b33ed53a83

Analysis

max time kernel
4265089s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
14-01-2022 16:01

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General

Target

ScanClientUpdate/KM.FileSystem.dll
Size

282KB
MD5

66534e53d8751a24a767221fed01268d
SHA1

fc781887fd0579044bbf783e6c408eb0eea43485
SHA256

3b94cc71c325f9068105b9e7d5c9667b1de2bde85b7abc5b29ff649fd54715c4
SHA512

1f1b784b280bc34761ae93893ae7d95ebc6e5515542f153df7c91b00adfa796b3b2bee1a5857e0bb07d13c93b4df0eec3e1fd85911c79153b2d6c824a3a79369

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotification.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

MusNotification.exe

description pid process

Token: SeShutdownPrivilege 1796 MusNotification.exe
Token: SeCreatePagefilePrivilege 1796 MusNotification.exe

description	pid	process
Token: SeShutdownPrivilege	1796	MusNotification.exe
Token: SeCreatePagefilePrivilege	1796	MusNotification.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 208 wrote to memory of 3184	208	rundll32.exe	rundll32.exe
PID 208 wrote to memory of 3184	208	rundll32.exe	rundll32.exe
PID 208 wrote to memory of 3184	208	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ScanClientUpdate\KM.FileSystem.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:208

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ScanClientUpdate\KM.FileSystem.dll,#1
2⤵
PID:3184

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1796

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3184-130-0x0000000000000000-mapping.dmp

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