tofsee | 7abed97912f1e962a5c0e907c09761ed78354b771da935b05df57a88c0d5da37

Analysis

max time kernel
150s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/07/2026, 22:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe
Size 14.4MB
Sample260727-2axjcsde95
SHA256 7abed97912f1e962a5c0e907c09761ed78354b771da935b05df57a88c0d5da37
MD5 76449db65c632f11ab092a919e45d7f1
SHA1 ffe7feb34d82d3dc4e903d795044b7ff32587254
SHA512 ae82528540f7036ed7552fefdf4c4e98554bf1437f106aa56b344edc5a083d58af799f55fd990f2c3c1b93bed295a47158a10ce07386ff3900ed203a050bf125
SSDEEP 3072:NurXX+PBiSWHn9SBwcA/Z80HN1TFEGP8HOfwjQ6bdFor3Yz+HKa13jjjjjjjjjjT:yXVSOn9SBKh/TFEGBfw9vo7FHKa
TLSH
T157E6EA617BF2A045F7FBCA3666314958AB37FC6BF96AC31F20448A5B1C21681CD46B13
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn
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\bcrnlqdy = "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
1632	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\bcrnlqdy\ImagePath = "C:\\Windows\\SysWOW64\\bcrnlqdy\\auumpzdp.exe"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
4544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
6004	auumpzdp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 6004 set thread context of 4544	6004	auumpzdp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
352	sc.exe
3288	sc.exe
3360	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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
5152	cmd.exe
5780	cmd.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2840	6004	WerFault.exe	100
3996	3208	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	auumpzdp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.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

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3208 wrote to memory of 5152	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	89
PID 3208 wrote to memory of 5780	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	91
PID 3208 wrote to memory of 352	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	93
PID 3208 wrote to memory of 3288	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	95
PID 3208 wrote to memory of 3360	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	98
PID 6004 wrote to memory of 4544	6004	auumpzdp.exe	101
PID 6004 wrote to memory of 4544	6004	auumpzdp.exe	101
PID 3208 wrote to memory of 1632	3208	2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe	103

C:\Users\Admin\AppData\Local\Temp\2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bcrnlqdy\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\auumpzdp.exe" C:\Windows\SysWOW64\bcrnlqdy\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:5780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bcrnlqdy binPath= "C:\Windows\SysWOW64\bcrnlqdy\auumpzdp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bcrnlqdy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bcrnlqdy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3360
- 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:1632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 1096
  2⤵
  - Program crash
  PID:3996

C:\Windows\SysWOW64\bcrnlqdy\auumpzdp.exe
C:\Windows\SysWOW64\bcrnlqdy\auumpzdp.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-27_76449db65c632f11ab092a919e45d7f1_amadey_elex_rhadamanthys_smoke-loader_stealc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6004
- 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:4544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 6004 -s 592
  2⤵
  - Program crash
  PID:2840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 6004 -ip 6004
1⤵
PID:4136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3208 -ip 3208
1⤵
PID:3300

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

Replay Monitor

Loading Replay Monitor...

Downloads

auumpzdp.exe

Path C:\Users\Admin\AppData\Local\Temp\auumpzdp.exe
Size 11.2MB
SHA256 4d51577cd4f9c5f4cbe13c912bf457a2284b87fd1c43c4d09d6086603173207f
MD5 993325f36bcdcb153557ecbb05cf6579
SHA1 887a0a91f3ffd9a75633ae5de99fad0a496e5f88
SHA512 51547856ec5f70b2ff646b58cda136ad62ac0fe187fe87535b50d79618326de7aa4d142a2214995bde8c888e1a00e8251e3140fe838001eeb3f480385224d1b8
SSDEEP 3072:ZurXX+PBiSWHn9SBwcA/Z80HN1TFEGP8HOfwjQ6bdFor3Yz+HKa13jjjjjjjjjjn:eXVSOn9SBKh/TFEGBfw9vo7FHKa
TLSH
T183C6EA617BF2A045F7FBCA3666314958AB37FC6BF96AC31F20448A5B1C21681CD46B13
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3208-2-0x0000000000990000-0x00000000009A3000-memory.dmp

Download

memory/3208-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Download

memory/3208-14-0x0000000000400000-0x000000000070F000-memory.dmp

Download

memory/4544-9-0x0000000000B70000-0x0000000000B85000-memory.dmp

Download

memory/4544-12-0x0000000000B70000-0x0000000000B85000-memory.dmp

Download

memory/4544-15-0x0000000000B70000-0x0000000000B85000-memory.dmp

Download

memory/4544-16-0x0000000000B70000-0x0000000000B85000-memory.dmp

Download

memory/4544-17-0x0000000000B70000-0x0000000000B85000-memory.dmp

Download

memory/6004-8-0x0000000001180000-0x0000000001193000-memory.dmp

Download

memory/6004-7-0x0000000000940000-0x0000000000A40000-memory.dmp

Download

memory/6004-13-0x0000000000400000-0x000000000070F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads