skuld | 98c268b55ecfe3b0dd8496f973e181e567bcfa5f92762bffe8e47039cfe232ea

Analysis

max time kernel
1371s
max time network
1431s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
26-10-2024 22:43

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General

Target

Hero Installer.exe
Size

3.2MB
MD5

99b4eee043f43b712c55e22627e0657e
SHA1

5c52730ce0a5e5662fd4d3b31cc6808284aed4a1
SHA256

c7e5ec4788379a9dfe837b77cffccd736a89b075de9f6839b63b9a1e97cbccd2
SHA512

481093a306b7098858b3850eb4cb6994c37e2a8204d7eefcccf5bd7e1dde17a6ab9d6852cda6c2102220beb4881508ae63a08c684fae3eecdb5feeea72590976
SSDEEP

49152:6UlMxh3KbgsF2ljgJcvTdqrVPLiRfYMNqusjmj3YXYUAgg+b9ub9AC5JJ:dl0hlsERv0J+fYMNOY2Yf+SeC5JJ

Score

10^/10

skuld persistence stealer upx

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1299857810292609034/CmvPrI4O1_Ki2MR6uQa8p7l5tp_6fFkSrqlQl4lee8GPVswb-bDC49xNFwmJAK-hRCrz

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-1-5-21-584106483-899802418-1877852863-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	Hero Installer.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4324-0-0x0000000000350000-0x0000000000D98000-memory.dmp	upx
behavioral2/memory/4324-1-0x0000000000350000-0x0000000000D98000-memory.dmp	upx

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4324	Hero Installer.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3624	4324	Hero Installer.exe	82
PID 4324 wrote to memory of 3624	4324	Hero Installer.exe	82

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3624	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Hero Installer.exe
"C:\Users\Admin\AppData\Local\Temp\Hero Installer.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Windows\system32\attrib.exe
  attrib +h +s "C:\Users\Admin\AppData\Local\Temp\Hero Installer.exe"
  2⤵
  - Views/modifies file attributes
  PID:3624

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/4324-0-0x0000000000350000-0x0000000000D98000-memory.dmp

Filesize
10.3MB

Download
memory/4324-1-0x0000000000350000-0x0000000000D98000-memory.dmp

Filesize
10.3MB

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads