c1ecd189681d1ef38e5ccc510e4db47f93bbbae3f2d664c08949b7f011e33d2c

Analysis

max time kernel
34s
max time network
34s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
26/03/2025, 05:59

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General

Target

avast.antivirus.exe
Size

10.3MB
MD5

2ddc666303ddc8c26225a8f7e62b94b0
SHA1

d8243cef507ec61a646c7e585672427c6d44d95c
SHA256

c1ecd189681d1ef38e5ccc510e4db47f93bbbae3f2d664c08949b7f011e33d2c
SHA512

739a7e84284b2aca88b69b6e1859ddc9a65028f1315dac2c09611342f41071d89526ce4b600c783287a43ab05ded8259279a514d95e6d6f30bc9c24a9d99154c
SSDEEP

98304:MIZ8ZdSFLtj/WsKnloeVsJ/eW1pnA0rHtgEgb:MFZdKLtjGoeVspx1pAYZgb

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-1-5-21-2123103809-19148277-2527443841-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	avast.antivirus.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3200	avast.antivirus.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 3592	3200	avast.antivirus.exe	86
PID 3200 wrote to memory of 3592	3200	avast.antivirus.exe	86

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3592	attrib.exe

C:\Users\Admin\AppData\Local\Temp\avast.antivirus.exe
"C:\Users\Admin\AppData\Local\Temp\avast.antivirus.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\avast.antivirus.exe
  2⤵
  - Views/modifies file attributes
  PID:3592

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2404

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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