skuld | 0b57a16929b2c048ed07a5b5a22e0615ddc54052d3bf6e159d402e1db2451993

Analysis

max time kernel
137s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 02:17

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General

Target

GenesisLoader.exe
Size

3.2MB
MD5

8b684724a136910f13bb804e23f6c063
SHA1

d573add7ec341c34d318407041486827c0e61cc4
SHA256

0b57a16929b2c048ed07a5b5a22e0615ddc54052d3bf6e159d402e1db2451993
SHA512

88d495bca59669ac8a728cd09d47723098840f5dc8afff79882aad6f751b04342d82e7d144306062d5ee535730db4b6f139a81fd2a7b06658aed02eb5f2057fd
SSDEEP

98304:e7Kdi/nDXpVyNpEEY3JcPr4+OUYujeXy:KKduLCNpfY3JX+vje

Score

10^/10

skuld persistence stealer upx

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1301342721436422225/ExDTQQzBSxDYOtNN8CTw_3RbcACa6OYivXeZWXNHpdqngLp7DaCNXj4g-voNo8MXkuFf

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

Processes:

GenesisLoader.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	GenesisLoader.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1868-0-0x0000000000F10000-0x0000000001958000-memory.dmp	upx
behavioral2/memory/1868-2-0x0000000000F10000-0x0000000001958000-memory.dmp	upx

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

GenesisLoader.exe

description pid process

Token: SeDebugPrivilege 1868 GenesisLoader.exe

description	pid	process
Token: SeDebugPrivilege	1868	GenesisLoader.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

GenesisLoader.exe

description	pid	process	target process
PID 1868 wrote to memory of 4916	1868	GenesisLoader.exe	attrib.exe
PID 1868 wrote to memory of 4916	1868	GenesisLoader.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

4916 attrib.exe

pid	process
4916	attrib.exe

C:\Users\Admin\AppData\Local\Temp\GenesisLoader.exe
"C:\Users\Admin\AppData\Local\Temp\GenesisLoader.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\GenesisLoader.exe
  2⤵
  - Views/modifies file attributes
  PID:4916

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/1868-0-0x0000000000F10000-0x0000000001958000-memory.dmp

Filesize
10.3MB

Download
memory/1868-2-0x0000000000F10000-0x0000000001958000-memory.dmp

Filesize
10.3MB

Download