skuld | f6888a1b623400e61788d15b9b8ccc496f39bcd8689ab726f12652047dcfbeb7

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2025, 14:28

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General

Target

2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
Size

14.8MB
MD5

4d9462d9fbb8b233ca5120223d373e27
SHA1

66cde09b46244f1883a93403d2c218688f05987a
SHA256

f6888a1b623400e61788d15b9b8ccc496f39bcd8689ab726f12652047dcfbeb7
SHA512

6df6ebd1cb58eac9c79b29420b31dbf829389b78d2aef17ca5306ed332c6dd1df4cd0d187632bfe6af73ca85736a55ff922491882b53b24178e0cf50eb499365
SSDEEP

196608:KqZ4f/oCqKqc/3h4Po9YXx+29GAB7ob73mrVGwYdNE2vfUWm:xZ4XoBKHY9AuM73gQDvfUWm

Score

10^/10

skuld persistence stealer

Malware Config

Extracted

Family

skuld

https://ptb.discord.com/api/webhooks/1328831575789670452/xCCdIHtUlgPrQV3300CuNBr_DVbCb2fTTBtkXn4qDJnuJPpmJOp5dKrjZT4B0XHJ4OMa

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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
3	api.ipify.org
4	api.ipify.org
10	ip-api.com

GoLang User-Agent 1 IoCs

Uses default user-agent string defined by GoLang HTTP packages.

description	flow	ioc
HTTP User-Agent header	11	Go-http-client/1.1

Modifies system certificate store 2 TTPs 3 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
Token: SeIncreaseQuotaPrivilege	1492	wmic.exe
Token: SeSecurityPrivilege	1492	wmic.exe
Token: SeTakeOwnershipPrivilege	1492	wmic.exe
Token: SeLoadDriverPrivilege	1492	wmic.exe
Token: SeSystemProfilePrivilege	1492	wmic.exe
Token: SeSystemtimePrivilege	1492	wmic.exe
Token: SeProfSingleProcessPrivilege	1492	wmic.exe
Token: SeIncBasePriorityPrivilege	1492	wmic.exe
Token: SeCreatePagefilePrivilege	1492	wmic.exe
Token: SeBackupPrivilege	1492	wmic.exe
Token: SeRestorePrivilege	1492	wmic.exe
Token: SeShutdownPrivilege	1492	wmic.exe
Token: SeDebugPrivilege	1492	wmic.exe
Token: SeSystemEnvironmentPrivilege	1492	wmic.exe
Token: SeRemoteShutdownPrivilege	1492	wmic.exe
Token: SeUndockPrivilege	1492	wmic.exe
Token: SeManageVolumePrivilege	1492	wmic.exe
Token: 33	1492	wmic.exe
Token: 34	1492	wmic.exe
Token: 35	1492	wmic.exe
Token: 36	1492	wmic.exe
Token: SeIncreaseQuotaPrivilege	1492	wmic.exe
Token: SeSecurityPrivilege	1492	wmic.exe
Token: SeTakeOwnershipPrivilege	1492	wmic.exe
Token: SeLoadDriverPrivilege	1492	wmic.exe
Token: SeSystemProfilePrivilege	1492	wmic.exe
Token: SeSystemtimePrivilege	1492	wmic.exe
Token: SeProfSingleProcessPrivilege	1492	wmic.exe
Token: SeIncBasePriorityPrivilege	1492	wmic.exe
Token: SeCreatePagefilePrivilege	1492	wmic.exe
Token: SeBackupPrivilege	1492	wmic.exe
Token: SeRestorePrivilege	1492	wmic.exe
Token: SeShutdownPrivilege	1492	wmic.exe
Token: SeDebugPrivilege	1492	wmic.exe
Token: SeSystemEnvironmentPrivilege	1492	wmic.exe
Token: SeRemoteShutdownPrivilege	1492	wmic.exe
Token: SeUndockPrivilege	1492	wmic.exe
Token: SeManageVolumePrivilege	1492	wmic.exe
Token: 33	1492	wmic.exe
Token: 34	1492	wmic.exe
Token: 35	1492	wmic.exe
Token: 36	1492	wmic.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 4824	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	86
PID 3248 wrote to memory of 4824	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	86
PID 3248 wrote to memory of 4168	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	87
PID 3248 wrote to memory of 4168	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	87
PID 3248 wrote to memory of 1492	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	89
PID 3248 wrote to memory of 1492	3248	2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4824	attrib.exe
4168	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\2025-02-25_4d9462d9fbb8b233ca5120223d373e27_frostygoop_luca-stealer_ngrbot_poet-rat_snatch.exe
  2⤵
  - Views/modifies file attributes
  PID:4824
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
  2⤵
  - Views/modifies file attributes
  PID:4168
- C:\Windows\System32\Wbem\wmic.exe
  wmic csproduct get UUID
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1492

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

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.8MB

MD5
4d9462d9fbb8b233ca5120223d373e27

SHA1
66cde09b46244f1883a93403d2c218688f05987a

SHA256
f6888a1b623400e61788d15b9b8ccc496f39bcd8689ab726f12652047dcfbeb7

SHA512
6df6ebd1cb58eac9c79b29420b31dbf829389b78d2aef17ca5306ed332c6dd1df4cd0d187632bfe6af73ca85736a55ff922491882b53b24178e0cf50eb499365

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads