skuld | fb6f32fa33d8459cc43bd0bd1f69ff9f3a55832c136988a9cebcd0da512e7f93

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 12:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
Size

14.8MB
MD5

a691ba7f875f03ec2aaebd23855e854b
SHA1

4423cb8e7060e8735e9dad6168c999a6bbeeb864
SHA256

fb6f32fa33d8459cc43bd0bd1f69ff9f3a55832c136988a9cebcd0da512e7f93
SHA512

e9cc0a87520484d114bb832d560b11accb1b6d18d7300fc11f37989ed3c2dfee111a6a2c00d66de8f93b94fec25ee94b32424af076d6e1d6590feb655c88f1b7
SSDEEP

196608:lYk3cFycRRLYWGOzK2B+cbg8lhSLPb1z/DD40BZNL:lYfFzPtg87ARz/b7

Score

10^/10

skuld persistence stealer

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1304565507508277299/6hdpV_wty8SfphNPvRZrUPrBllUZDJort8HlLUOshDLFiOvfE6ywtmYzM00YGrLvvkOn

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_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
4	api.ipify.org
5	api.ipify.org
6	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	7	Go-http-client/1.1

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\B1BC968BD4F49D622AA89A81F2150152A41D829C\Blob = 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	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
Token: SeIncreaseQuotaPrivilege	100	wmic.exe
Token: SeSecurityPrivilege	100	wmic.exe
Token: SeTakeOwnershipPrivilege	100	wmic.exe
Token: SeLoadDriverPrivilege	100	wmic.exe
Token: SeSystemProfilePrivilege	100	wmic.exe
Token: SeSystemtimePrivilege	100	wmic.exe
Token: SeProfSingleProcessPrivilege	100	wmic.exe
Token: SeIncBasePriorityPrivilege	100	wmic.exe
Token: SeCreatePagefilePrivilege	100	wmic.exe
Token: SeBackupPrivilege	100	wmic.exe
Token: SeRestorePrivilege	100	wmic.exe
Token: SeShutdownPrivilege	100	wmic.exe
Token: SeDebugPrivilege	100	wmic.exe
Token: SeSystemEnvironmentPrivilege	100	wmic.exe
Token: SeRemoteShutdownPrivilege	100	wmic.exe
Token: SeUndockPrivilege	100	wmic.exe
Token: SeManageVolumePrivilege	100	wmic.exe
Token: 33	100	wmic.exe
Token: 34	100	wmic.exe
Token: 35	100	wmic.exe
Token: 36	100	wmic.exe
Token: SeIncreaseQuotaPrivilege	100	wmic.exe
Token: SeSecurityPrivilege	100	wmic.exe
Token: SeTakeOwnershipPrivilege	100	wmic.exe
Token: SeLoadDriverPrivilege	100	wmic.exe
Token: SeSystemProfilePrivilege	100	wmic.exe
Token: SeSystemtimePrivilege	100	wmic.exe
Token: SeProfSingleProcessPrivilege	100	wmic.exe
Token: SeIncBasePriorityPrivilege	100	wmic.exe
Token: SeCreatePagefilePrivilege	100	wmic.exe
Token: SeBackupPrivilege	100	wmic.exe
Token: SeRestorePrivilege	100	wmic.exe
Token: SeShutdownPrivilege	100	wmic.exe
Token: SeDebugPrivilege	100	wmic.exe
Token: SeSystemEnvironmentPrivilege	100	wmic.exe
Token: SeRemoteShutdownPrivilege	100	wmic.exe
Token: SeUndockPrivilege	100	wmic.exe
Token: SeManageVolumePrivilege	100	wmic.exe
Token: 33	100	wmic.exe
Token: 34	100	wmic.exe
Token: 35	100	wmic.exe
Token: 36	100	wmic.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 3484	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	84
PID 1688 wrote to memory of 3484	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	84
PID 1688 wrote to memory of 768	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	86
PID 1688 wrote to memory of 768	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	86
PID 1688 wrote to memory of 100	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	87
PID 1688 wrote to memory of 100	1688	2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe	87

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3484	attrib.exe
768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\2024-11-11_a691ba7f875f03ec2aaebd23855e854b_frostygoop_luca-stealer_poet-rat_snatch.exe
  2⤵
  - Views/modifies file attributes
  PID:3484
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
  2⤵
  - Views/modifies file attributes
  PID:768
- C:\Windows\System32\Wbem\wmic.exe
  wmic csproduct get UUID
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:100

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
14.8MB

MD5
a691ba7f875f03ec2aaebd23855e854b

SHA1
4423cb8e7060e8735e9dad6168c999a6bbeeb864

SHA256
fb6f32fa33d8459cc43bd0bd1f69ff9f3a55832c136988a9cebcd0da512e7f93

SHA512
e9cc0a87520484d114bb832d560b11accb1b6d18d7300fc11f37989ed3c2dfee111a6a2c00d66de8f93b94fec25ee94b32424af076d6e1d6590feb655c88f1b7

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads