tofsee | 9e28ad096644f303885a42fa9393ef0666dc2d36935cb85c4fee62eb9fcb2e7b

Analysis

max time kernel
150s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/11/2026, 01:52

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General

Target
2026-11-03_f9297f57e7432c4de89cb791e9083c34_amadey_elex_remcos_smoke-loader.exe
Size 12.6MB
Sample261104-cac3aacb52
SHA256 9e28ad096644f303885a42fa9393ef0666dc2d36935cb85c4fee62eb9fcb2e7b
MD5 f9297f57e7432c4de89cb791e9083c34
SHA1 9a8bd43e3b90bd71c0632688f10db388b531ea5a
SHA512 50f54d97bbbde93db7fc907a4f6202b7b33635354018de25252802c5b9d08e43c1c95a82eb527cd614d0b08f654bc2a6ff79a14241534cd460a2fd6e0c6bd718
SSDEEP 24576:8Swf8lsd83RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRB:Pwk
TLSH
T1E3D68C211AB84D2CC4F549FD732D3F1189FEC770EBD1A6A7A90828F548B75BA24D2427
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery tofsee trojan

Malware Config

Signatures

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1108	5504	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 1 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	2026-11-03_f9297f57e7432c4de89cb791e9083c34_amadey_elex_remcos_smoke-loader.exe

C:\Users\Admin\AppData\Local\Temp\2026-11-03_f9297f57e7432c4de89cb791e9083c34_amadey_elex_remcos_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-03_f9297f57e7432c4de89cb791e9083c34_amadey_elex_remcos_smoke-loader.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5504 -s 268
  2⤵
  - Program crash
  PID:1108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 5504 -ip 5504
1⤵
PID:4612

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/5504-2-0x0000000002CB0000-0x0000000002CC3000-memory.dmp

Download

memory/5504-1-0x0000000002D40000-0x0000000002E40000-memory.dmp