1c141c7280327dfae2729a768e31076cc23c972ef73e0323d0246e72423ba848

Analysis

max time kernel
1151s
max time network
1156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-10-2024 18:49

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General

Target

skuld.exe
Size

9.9MB
MD5

873e29ff957df42b18e9acd839e57854
SHA1

d3db5b14226be6caed8481a606642a9a7c5da7e1
SHA256

1c141c7280327dfae2729a768e31076cc23c972ef73e0323d0246e72423ba848
SHA512

ff6b103efc45674c12b52b3c74f0d4425a6f240b9a021dea925621cd51a51ee1c5443b206446e90ca0d02aa8fc62e2107d06e6bd9b1ce71708838693809a97d1
SSDEEP

98304:B/+UKnYehFlLUBnPZZMz9cXU5fpKePkE5B2v/ZmmzL:J+oehFN+BY9cXU9pKePdSDzL

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-1-5-21-940901362-3608833189-1915618603-1000\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

Processes:

skuld.exe

description pid process

Token: SeDebugPrivilege 3672 skuld.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

skuld.exe

description pid process target process

PID 3672 wrote to memory of 1144 3672 skuld.exe attrib.exe
PID 3672 wrote to memory of 1144 3672 skuld.exe attrib.exe
Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

1144 attrib.exe

description	pid	process
Token: SeDebugPrivilege	3672	skuld.exe

description	pid	process	target process
PID 3672 wrote to memory of 1144	3672	skuld.exe	attrib.exe
PID 3672 wrote to memory of 1144	3672	skuld.exe	attrib.exe

pid	process
1144	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:3672

C:\Windows\system32\attrib.exe
attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
2⤵
- Views/modifies file attributes
PID:1144

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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