7dbb067561ae14ea378461f0f62caeb200574d6c715fd273e4cf320f051367e9

Analysis

max time kernel
4265058s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
17/01/2022, 10:22

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General

Target
uSmo.dll
Size 472KB
Sample220117-md891ahgdj
SHA256 7dbb067561ae14ea378461f0f62caeb200574d6c715fd273e4cf320f051367e9
MD5 af319c908124a134fcc5239813e26463
SHA1 7db5d3d6666c0d6fa0ce6dcfd6f2f410d2526676
SHA512 ab3d7a559059460feaa6cf61f76702bb15d867f92c5592625b8c8a79e25becd0afd8aa36acb970565eb3f4e9f040c7529677874fe742650ae35e380f348c273e
MD5 SHA1 SHA512

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

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

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3336	MusNotification.exe
Token: SeCreatePagefilePrivilege	3336	MusNotification.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 3676	3016	regsvr32.exe	53
PID 3016 wrote to memory of 3676	3016	regsvr32.exe	53
PID 3016 wrote to memory of 3676	3016	regsvr32.exe	53
PID 3676 wrote to memory of 3952	3676	regsvr32.exe	54
PID 3676 wrote to memory of 3952	3676	regsvr32.exe	54
PID 3676 wrote to memory of 3952	3676	regsvr32.exe	54

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\uSmo.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\uSmo.dll
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3676
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\uSmo.dll",DllRegisterServer
    3⤵
    PID:3952

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:3336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3676-132-0x0000000004E45000-0x0000000004E46000-memory.dmp

Download

memory/3676-131-0x0000000004E21000-0x0000000004E45000-memory.dmp