2ef9e45197eda58a083ca6e1f3b003fc8377684e0d450d2192a0eebe779e5539

Analysis

max time kernel
95s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2024 15:30

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General

Target

skuld.exe
Size

9.9MB
MD5

58eab2f0c666955184a4e4a3c6777655
SHA1

46650d7685c4ad96c967414d0ec9fd56bded5768
SHA256

2ef9e45197eda58a083ca6e1f3b003fc8377684e0d450d2192a0eebe779e5539
SHA512

c7f9cb41df79dbae12fb40524c30f2c518be6c7370d8dd7db7ec448bb4c6d40e57906658b31956be3ab9114516569a070672d3ea5d1e165a10408ddb01547991
SSDEEP

98304:iWRQmoduu5cb9zXHCVtjteJPYkqbEoD2gCZmJz:jRg75chu/teJPTqIzAz

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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	skuld.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4752	skuld.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 4988	4752	skuld.exe	84
PID 4752 wrote to memory of 4988	4752	skuld.exe	84

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4988	attrib.exe

C:\Users\Admin\AppData\Local\Temp\skuld.exe
"C:\Users\Admin\AppData\Local\Temp\skuld.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
  2⤵
  - Views/modifies file attributes
  PID:4988

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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