stealc | b51372d8296dbe1c14d9e9ddae75b9457dfe30c52fd71587f756ed51553d3319

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 11:54

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General

Target
2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Size 11.8MB
Sample261002-n3deas112n
SHA256 b51372d8296dbe1c14d9e9ddae75b9457dfe30c52fd71587f756ed51553d3319
MD5 745c125ee7bffcfa253c24413293ed7d
SHA1 12d0b5f55c0a2b50a987d61a7e04e11265e47799
SHA512 eb9f06688f30aabc4605436528e5bb343e897b2099b0bfb52f4fee0844bba311c06a6444a3b13e44b2332486239d9df8e09a26680aa265fbfed62eb3192fc3d8
SSDEEP 6144:0B+Xj/mRJFhaDgVeAB7CZAzqaj3TJ4JfJ/J6J/JEJtJ/JEJ8J/JEJnJ/JEJRJ/JY:0o7mRvhY6eAvuaj
TLSH
T1CFC674E715DC49DBE48A1B7C24B26A2BCD90FB74443A152225C4E9CF1E8EDDB065C3B2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution stealc tofsee persistence privilege_escalation stealer trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn
jotunheim.name

Signatures

Family: Stealc
Stealc is an infostealer written in C++.
stealer stealc
Family: Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Detects Stealc stealer Version 3 2 IoCs

resource	yara_rule
behavioral2/memory/4608-1-0x0000000000400000-0x0000000000754000-memory.dmp	family_stealc_v3
behavioral2/memory/4608-2-0x0000000000400000-0x0000000000754000-memory.dmp	family_stealc_v3

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\mqohwvrz = "0"	svchost.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
5548	netsh.exe

Sets service image path in registry 3 TTPs 1 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\mqohwvrz\ImagePath = "C:\\Windows\\SysWOW64\\mqohwvrz\\ukgvqigo.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5260	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4584	ukgvqigo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4584 set thread context of 5260	4584	ukgvqigo.exe	101

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4692	sc.exe
2884	sc.exe
2284	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2024	cmd.exe
4816	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1060	4584	WerFault.exe	100
2312	4608	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ukgvqigo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 2024	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	89
PID 4608 wrote to memory of 4816	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	91
PID 4608 wrote to memory of 4692	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	93
PID 4608 wrote to memory of 2884	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	95
PID 4608 wrote to memory of 2284	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	98
PID 4584 wrote to memory of 5260	4584	ukgvqigo.exe	101
PID 4584 wrote to memory of 5260	4584	ukgvqigo.exe	101
PID 4608 wrote to memory of 5548	4608	2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mqohwvrz\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ukgvqigo.exe" C:\Windows\SysWOW64\mqohwvrz\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mqohwvrz binPath= "C:\Windows\SysWOW64\mqohwvrz\ukgvqigo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mqohwvrz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mqohwvrz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:5548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 1312
  2⤵
  - Program crash
  PID:2312

C:\Windows\SysWOW64\mqohwvrz\ukgvqigo.exe
C:\Windows\SysWOW64\mqohwvrz\ukgvqigo.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-10-01_745c125ee7bffcfa253c24413293ed7d_amadey_elex_rhadamanthys_smoke-loader_stealc_tofsee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 632
  2⤵
  - Program crash
  PID:1060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4608 -ip 4608
1⤵
PID:6116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4584 -ip 4584
1⤵
PID:932

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ukgvqigo.exe

Path C:\Users\Admin\AppData\Local\Temp\ukgvqigo.exe
Size 10.7MB
SHA256 c6515dbd452774897dc8efc9476a200e560eccbdd22a41aac45858dfa12bdf3d
MD5 37aee1a0322d99a94c68a74628cbffab
SHA1 2108f0aa4cfe291da120879c4d0ce3db0f335a88
SHA512 15a5350fc537bc5ab013302649011007d469e231021a6524610a29635de0865fe552bdef37625e5e4d0d05c309bb356e03f0b137a78b91d1b796dfde48072aaa
SSDEEP 6144:QB+Xj/mRJFhaDgVeAB7CZAzqaj3TJ4JfJ/J6J/JEJtJ/JEJ8J/JEJnJ/JEJRJ/J9:Qo7mRvhY6eAvuaj
TLSH
T19CB674E715DC49DBE48A1B7C24B26A2BCD90FB74443A152225C4E9CF1E8EDDB065C3B2
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4584-18-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4584-12-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4584-10-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4608-5-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4608-1-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4608-2-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4608-16-0x0000000000400000-0x0000000000754000-memory.dmp

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memory/4608-0-0x000000000073B000-0x000000000073C000-memory.dmp

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memory/5260-11-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

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memory/5260-15-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

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memory/5260-19-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

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memory/5260-20-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

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memory/5260-21-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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