skuld | 429c2396e234402ecf200be749e737dd4f969c8457e50eec8cde4fe4b486d712

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-06-2024 02:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d32b6497f96085710fd6a1ad10e82330.exe
Size

9.3MB
MD5

d32b6497f96085710fd6a1ad10e82330
SHA1

11af8afa2f63fd797e6dbe306ea8181c3480119a
SHA256

429c2396e234402ecf200be749e737dd4f969c8457e50eec8cde4fe4b486d712
SHA512

e6eb4ec19ad1d3f813028428b81fc931bd6739845958b541c2b70425bed553910467c29df6ccdc0d6fb9cc30cca91491e632bb30e5cf38a2109b30dc9e014b2f
SSDEEP

98304:wsGLMqMUzFeUoGgcmmPsWvpIqGEV6wKIii8HlD+:EBMUzQyPsWvCqjsfD

Score

10^/10

skuld persistence stealer

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1254543345703977021/GGEp1kTIdcnrlXbkstceRTKYL1MjeavIS4CYW77UE3k75CymaXcXytUfkZVnLNW1d_wt

Signatures

Skuld stealer
An info stealer written in Go lang.
stealer skuld

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	d32b6497f96085710fd6a1ad10e82330.exe

Looks up external IP address via web service 13 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	api.ipify.org
17	api.ipify.org
18	api.ipify.org
23	api.ipify.org
20	api.ipify.org
22	api.ipify.org
10	api.ipify.org
15	api.ipify.org
19	api.ipify.org
24	api.ipify.org
25	api.ipify.org
6	api.ipify.org
21	api.ipify.org

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3940	d32b6497f96085710fd6a1ad10e82330.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 1172	3940	d32b6497f96085710fd6a1ad10e82330.exe	82
PID 3940 wrote to memory of 1172	3940	d32b6497f96085710fd6a1ad10e82330.exe	82
PID 3940 wrote to memory of 4304	3940	d32b6497f96085710fd6a1ad10e82330.exe	83
PID 3940 wrote to memory of 4304	3940	d32b6497f96085710fd6a1ad10e82330.exe	83

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1172	attrib.exe
4304	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d32b6497f96085710fd6a1ad10e82330.exe
"C:\Users\Admin\AppData\Local\Temp\d32b6497f96085710fd6a1ad10e82330.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\d32b6497f96085710fd6a1ad10e82330.exe
  2⤵
  - Views/modifies file attributes
  PID:1172
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
  2⤵
  - Views/modifies file attributes
  PID:4304

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe

Filesize
9.3MB

MD5
d32b6497f96085710fd6a1ad10e82330

SHA1
11af8afa2f63fd797e6dbe306ea8181c3480119a

SHA256
429c2396e234402ecf200be749e737dd4f969c8457e50eec8cde4fe4b486d712

SHA512
e6eb4ec19ad1d3f813028428b81fc931bd6739845958b541c2b70425bed553910467c29df6ccdc0d6fb9cc30cca91491e632bb30e5cf38a2109b30dc9e014b2f

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads