sheetrat | f3505481e4bc466641518ce61c16ac4785832f3d57b12464f0788774a09c9230

Analysis

max time kernel
149s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
23/06/2026, 20:04

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General

Target
svun44uvha00vt2r.exe
Size 4.7MB
Sample260623-ythmrsfz7k
SHA256 f3505481e4bc466641518ce61c16ac4785832f3d57b12464f0788774a09c9230
MD5 bf177efec8b64ef349d92dfb871849f6
SHA1 d5dde69e5492af828cef33ba0a6492770d4e8506
SHA512 9055434623f91b78228c7948e245ca8b5ed11eef6487303bba256596a6a3dec10e3ab3f9bb12c1add6062f0e5de3d89738c2b1ed6ed1eac953a43ea1fcf1b2b6
SSDEEP 12288:zijbQ7kvVRT1usqxaXEhaCl96ozVtTaUv4m:
TLSH
T13636236B2BFCD80DEB80CAB076A3C9F9516B3C8691431F536E5C45B61340E644EE265F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion evasion execution sheetrat persistence trojan

Malware Config

Signatures

Family: Sheetrat, NonEuclid rat
Sheetrat aka NonEuclid RAT is a trojan written in C#.
trojan sheetrat

Detects Sheetrat Payload 1 IoCs

Sheetrat aka NonEuclid RAT is a trojan written in C#.

resource	yara_rule
behavioral2/memory/5484-5-0x0000000001390000-0x00000000013F2000-memory.dmp	family_sheetrat_v1

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2894455325-857903158-4263030270-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Program Files\\Nvidia.exe,"	svun44uvha00vt2r.exe

Modifies Windows Defender DisableAntiSpyware settings 3 TTPs 3 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	svchost.exe

UAC bypass 3 TTPs 12 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
5952	Nvidia.exe
4732	svchost.exe

Checks whether UAC is enabled 1 TTPs 6 IoCs

defense_evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svun44uvha00vt2r.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Nvidia.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
1	ip-api.com

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Nvidia.exe	svun44uvha00vt2r.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	svun44uvha00vt2r.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
932	schtasks.exe
3644	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5484	svun44uvha00vt2r.exe
Token: SeDebugPrivilege	5952	Nvidia.exe
Token: SeDebugPrivilege	4732	svchost.exe
Token: SeIncBasePriorityPrivilege	5952	Nvidia.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5484 wrote to memory of 5652	5484	svun44uvha00vt2r.exe	89
PID 5484 wrote to memory of 3996	5484	svun44uvha00vt2r.exe	90
PID 5484 wrote to memory of 4860	5484	svun44uvha00vt2r.exe	91
PID 4860 wrote to memory of 932	4860	cmd.exe	95
PID 3996 wrote to memory of 3140	3996	CMD.exe	96
PID 5484 wrote to memory of 2152	5484	svun44uvha00vt2r.exe	97
PID 2152 wrote to memory of 3644	2152	cmd.exe	99
PID 5484 wrote to memory of 5952	5484	svun44uvha00vt2r.exe	100
PID 5952 wrote to memory of 3992	5952	Nvidia.exe	104
PID 3992 wrote to memory of 2116	3992	CMD.exe	106

System policy modification 1 TTPs 18 IoCs

defense_evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "1"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	Nvidia.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "1"	svun44uvha00vt2r.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	svchost.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\svun44uvha00vt2r.exe
"C:\Users\Admin\AppData\Local\Temp\svun44uvha00vt2r.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies Windows Defender DisableAntiSpyware settings
- UAC bypass
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:5484
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" netsh advfirewall firewall add rule name="WindowsControl" dir=in action=allow program="C:\Program Files\Nvidia.exe" enable=yes & exit
  2⤵
  PID:5652
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c schtasks /delete /F /TN "useinit" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3996
- - C:\Windows\system32\schtasks.exe
    schtasks /delete /F /TN "useinit"
    3⤵
    PID:3140
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc onlogon /tn "useinit" /tr "C:\Program Files\Nvidia.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /tn "useinit" /tr "C:\Program Files\Nvidia.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:932
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "WindowsControlW" /tr "C:\Windows\svchost.exe" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2152
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "WindowsControlW" /tr "C:\Windows\svchost.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3644
- C:\Program Files\Nvidia.exe
  "C:\Program Files\Nvidia.exe"
  2⤵
  - Modifies Windows Defender DisableAntiSpyware settings
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:5952
- - C:\Windows\SYSTEM32\CMD.exe
    "CMD" /c schtasks /delete /F /TN "useinit" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3992
  - - C:\Windows\system32\schtasks.exe
      schtasks /delete /F /TN "useinit"
      4⤵
      PID:2116

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:4732

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Nvidia.exe

Path C:\Program Files\Nvidia.exe
Size 4.7MB
SHA256 f3505481e4bc466641518ce61c16ac4785832f3d57b12464f0788774a09c9230
MD5 bf177efec8b64ef349d92dfb871849f6
SHA1 d5dde69e5492af828cef33ba0a6492770d4e8506
SHA512 9055434623f91b78228c7948e245ca8b5ed11eef6487303bba256596a6a3dec10e3ab3f9bb12c1add6062f0e5de3d89738c2b1ed6ed1eac953a43ea1fcf1b2b6
SSDEEP 12288:zijbQ7kvVRT1usqxaXEhaCl96ozVtTaUv4m:
TLSH
T13636236B2BFCD80DEB80CAB076A3C9F9516B3C8691431F536E5C45B61340E644EE265F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4732-39-0x000000001CA50000-0x000000001CB40000-memory.dmp

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memory/5484-1-0x0000000000620000-0x0000000000ADA000-memory.dmp

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memory/5484-0-0x00007FFD7D14F000-0x00007FFD7D150000-memory.dmp

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memory/5484-2-0x00007FFD7CFC0000-0x00007FFD7D964000-memory.dmp

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memory/5484-3-0x00007FFD7CFC0000-0x00007FFD7D964000-memory.dmp

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memory/5484-4-0x00007FFD7CFC0000-0x00007FFD7D964000-memory.dmp

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memory/5484-5-0x0000000001390000-0x00000000013F2000-memory.dmp

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memory/5484-35-0x000000001BA80000-0x000000001BB70000-memory.dmp

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memory/5484-36-0x00007FFD7CFC0000-0x00007FFD7D964000-memory.dmp

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memory/5952-40-0x000000001C4C0000-0x000000001C5B0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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