8e3601302c0294914808b6537cd27de961d087ba0807590b981b7f8c8aa5eee6

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-11-2024 10:18

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General

Target

skuld.exe
Size

9.9MB
MD5

dbbd2127d1030e4c9548fdf7de9983a7
SHA1

5b7939a94cbd908ad8f57bb2e5328cce657c3700
SHA256

8e3601302c0294914808b6537cd27de961d087ba0807590b981b7f8c8aa5eee6
SHA512

95a1112c9b062745df9c20f566cfcb9421221111d02db0c1a940a5ea230b09c39a487685ae674c350e4641132e3360a19ca0cd8762f7e46cecde8b7dd85fe5d2
SSDEEP

98304:OhoRYXiOhqugpWWNeWTQLc4u0u08eOEaB2v/ZmMz/:ao3OhqFHIrLc4uB08erlNz/

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

Processes:

skuld.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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

Processes:

skuld.exe

description pid process

Token: SeDebugPrivilege 3552 skuld.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

skuld.exe

description pid process target process

PID 3552 wrote to memory of 4520 3552 skuld.exe attrib.exe
PID 3552 wrote to memory of 4520 3552 skuld.exe attrib.exe
Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

4520 attrib.exe

description	pid	process
Token: SeDebugPrivilege	3552	skuld.exe

description	pid	process	target process
PID 3552 wrote to memory of 4520	3552	skuld.exe	attrib.exe
PID 3552 wrote to memory of 4520	3552	skuld.exe	attrib.exe

pid	process
4520	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:3552
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
  2⤵
  - Views/modifies file attributes
  PID:4520

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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