skuld | 51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/01/2025, 08:31

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General

Target

51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe
Size

3.3MB
MD5

a18fa13a344782382989f9256b4cebb5
SHA1

14d2afb309c5faa51bde404936a3718a7c8ca38a
SHA256

51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e
SHA512

0b6adb5f8f4d64c6ca1f1092c72a194de83838c1e5dbfc3c14bc3ec0afae5ba966aae34b7e8239f04504882586cf21c893eb377bc4add46e2f17c11f54118461
SSDEEP

98304:/9JzAeYfc6nrsoXGOOmjwj7ag+KFDgKcE4cxFubn:/TzxSAoXGlD7pNDgWxYbn

Score

10^/10

skuld persistence stealer upx

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1328819841737691156/GQdbtF6NI_oe0OnUTJWsjVTdzNbgAZYn13jZrPxtL_1Auu1nh-mM1mLtqtoNq50gPvUV

Signatures

Skuld family
skuld
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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4440-0-0x0000000000660000-0x00000000010A9000-memory.dmp	upx
behavioral2/memory/4440-1-0x0000000000660000-0x00000000010A9000-memory.dmp	upx

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 1556	4440	51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe	84
PID 4440 wrote to memory of 1556	4440	51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe	84

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1556	attrib.exe

C:\Users\Admin\AppData\Local\Temp\51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe
"C:\Users\Admin\AppData\Local\Temp\51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\51db06ca72fdfd4881a2c0309c937b131372f9c8616960623709502994f89c5e.exe
  2⤵
  - Views/modifies file attributes
  PID:1556

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

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Downloads

memory/4440-0-0x0000000000660000-0x00000000010A9000-memory.dmp

Filesize
10.3MB

Download
memory/4440-1-0x0000000000660000-0x00000000010A9000-memory.dmp

Filesize
10.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads