tofsee | 8f2f23af7885824623388f4053763fc5d5312c64103c9f01b2efcc0b77b8814b

Analysis

max time kernel
150s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
20/10/2026, 01:50

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General

Target
2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe
Size 14.7MB
Sample261020-b9dmesgt7m
SHA256 8f2f23af7885824623388f4053763fc5d5312c64103c9f01b2efcc0b77b8814b
MD5 d9ebb6fb86a86816ff714b71f40254dd
SHA1 559e4067069350be8fa00d47b13e1719e370dd4e
SHA512 245dfb5ff3dd6454a3a0af38168cb79bc957184dbf891b79473647d1c9b4f3d64dca8a326434bc862dbea9f06e9c2d58a7557cceb823fc3eb4cf0d0edae45dec
SSDEEP 6144:nq97LjFOKlbnh15S3pXF/iDuKkEn2E1a:nqV3FOKxnh1sEuzUv
TLSH
T196F63B370A680846D06AD4BDBF9DBF1C89DCB3B0B0584B6B035595D9AD0332B6AFD187
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

svartalfheim.top
jotunheim.name

Signatures

Family: Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

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\yeggwfv = "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
360	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\yeggwfv\ImagePath = "C:\\Windows\\SysWOW64\\yeggwfv\\brxejvzo.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
5796	brxejvzo.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5796 set thread context of 2184	5796	brxejvzo.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2720	sc.exe
1916	sc.exe
5452	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
5048	cmd.exe
2416	cmd.exe

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	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	brxejvzo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5296 wrote to memory of 5048	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	89
PID 5296 wrote to memory of 2416	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	91
PID 5296 wrote to memory of 2720	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	93
PID 5296 wrote to memory of 1916	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	96
PID 5296 wrote to memory of 5452	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	98
PID 5296 wrote to memory of 360	5296	2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe	101
PID 5796 wrote to memory of 2184	5796	brxejvzo.exe	103
PID 5796 wrote to memory of 2184	5796	brxejvzo.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yeggwfv\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\brxejvzo.exe" C:\Windows\SysWOW64\yeggwfv\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yeggwfv binPath= "C:\Windows\SysWOW64\yeggwfv\brxejvzo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yeggwfv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yeggwfv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5452
- 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:360

C:\Windows\SysWOW64\yeggwfv\brxejvzo.exe
C:\Windows\SysWOW64\yeggwfv\brxejvzo.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-10-19_d9ebb6fb86a86816ff714b71f40254dd_amadey_elex_redline-stealer_rhadamanthys_smoke-loader_stop.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:2184

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4728

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

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

Service Stop

T1489

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Downloads

brxejvzo.exe

Path C:\Users\Admin\AppData\Local\Temp\brxejvzo.exe
Size 14.2MB
SHA256 8b7edee5cf6a583e662794521528e7d4bf72646d04519032c4e8d09905ae7a16
MD5 75e2c5fbf2a41353560c02e30fdb1da5
SHA1 55e7b8e2d0992a1ed8f95e3bb0b18b819c92c1aa
SHA512 a284154c2a4a6472221cb490457cd31ad8061fba0fa57d13c1dac74b6941a3d2cf7db05bc132047d257ad7dfed71e0ef343e7417c1202f7f5d4158abf3446acb
SSDEEP 6144:aq97LjFOKlbnh15S3pXF/iDuKkEn2E1a:aqV3FOKxnh1sEuzUv
TLSH
T12FE63B370A680846D06AD4BDBF9DBF1C89DCB3B0B0584B6B035595D9AD0332B6AFD187
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2184-9-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/2184-16-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/2184-17-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/5296-2-0x0000000000B90000-0x0000000000BA3000-memory.dmp

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memory/5296-1-0x0000000000930000-0x0000000000A30000-memory.dmp

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memory/5296-11-0x0000000000930000-0x0000000000A30000-memory.dmp

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memory/5296-13-0x0000000000B90000-0x0000000000BA3000-memory.dmp

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memory/5296-12-0x0000000000400000-0x0000000000850000-memory.dmp

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memory/5796-8-0x0000000000A50000-0x0000000000B50000-memory.dmp

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memory/5796-14-0x0000000000400000-0x0000000000850000-memory.dmp

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memory/5796-15-0x0000000000A50000-0x0000000000B50000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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