skuld | 1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7

Resubmissions

27-01-2025 00:24

250127-aqke7aslgm 10

22-01-2025 00:38

250122-ay84hszldl 10

Analysis

max time kernel
91s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
27-01-2025 00:24

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General

Target

1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe
Size

3.3MB
MD5

2f0fcaa5e89062a81b58c83b674a64c0
SHA1

13e33c1618c51ed9b1addb7f44b3b65879862545
SHA256

1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7
SHA512

d5f13e8501fa2debed15854fa49cc901d33f5c53291a1c09901260f4ad23c7fbc4fa6bbba1fea52f347bf4e337455ddf7dc65b400309612e9abae4c1bbe56557
SSDEEP

98304:/9JzAeYfc6nrsoXGOOmjwj7ag+KFDgKcE4cxFub:/TzxSAoXGlD7pNDgWxYb

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-1-5-21-4249425805-3408538557-1766626484-1000\Software\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/4952-0-0x00000000003D0000-0x0000000000E19000-memory.dmp	upx
behavioral1/memory/4952-1-0x00000000003D0000-0x0000000000E19000-memory.dmp	upx

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4952	1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 4140	4952	1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe	79
PID 4952 wrote to memory of 4140	4952	1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe	79

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4140	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe
"C:\Users\Admin\AppData\Local\Temp\1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\1d7166f1cb758d252af9904e32bd128df4a9b4292ca2d162a611eff35eabe8f7N.exe
  2⤵
  - Views/modifies file attributes
  PID:4140

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

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Downloads

memory/4952-0-0x00000000003D0000-0x0000000000E19000-memory.dmp

Filesize
10.3MB

Download
memory/4952-1-0x00000000003D0000-0x0000000000E19000-memory.dmp

Filesize
10.3MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads