fda7a9e6f445b18f4a8de9a0529188e3e486d0e8844f892a72b730973a63fa6a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11/01/2025, 18:32

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General

Target

OnlineFix64.dll
Size

9.9MB
MD5

42a032c968e9d0c145bf1bfc3b534a26
SHA1

6907806bd435475f10b285b076888dcd92554689
SHA256

fda7a9e6f445b18f4a8de9a0529188e3e486d0e8844f892a72b730973a63fa6a
SHA512

5ba0f0262cfb36d95d9abb8316b75b0f10cd8667c57a03fcaa4d5ebec857474fad4f3db886cbd1482bb728aef405f7796b040d9a48d6c415e37f9e685d4385ec
SSDEEP

98304:UXv9Q2/1jxJ4xlxSaHL8SLs50SJStEcWGgbZmYOzK:UX79jxJml57Ls50US+H4z

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\rundll32.exe	attrib.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5072	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 3976	5072	rundll32.exe	82
PID 5072 wrote to memory of 3976	5072	rundll32.exe	82

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3976	attrib.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\OnlineFix64.dll,#1
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Windows\system32\rundll32.exe
  2⤵
  - Drops file in System32 directory
  - Views/modifies file attributes
  PID:3976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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