tofsee | 4a563a6d75de3775a3c51e949da78c6e5d0afcd9cdf871d08a70ee519a816d06

Analysis

max time kernel
150s
max time network
137s
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, 09:43

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General

Target
2026-11-03_b941a80d828332ba4689cf856222128d_amadey_elex_remcos_smoke-loader.exe
Size 15.0MB
Sample261104-lp8beazydv
SHA256 4a563a6d75de3775a3c51e949da78c6e5d0afcd9cdf871d08a70ee519a816d06
MD5 b941a80d828332ba4689cf856222128d
SHA1 740d6239179adea02484a105c6027f86b83d7486
SHA512 5d2f83deecb991e0634d0382feb164164ddc0f50abd53a1d9190b4ea10bcbaeb02e27a4b1fce5bbe4aac31423411bf781cf70a33764e71fe6c8266d747a52388
SSDEEP 24576:yMmDJxagM666666666666666666666666666666666666666666666666666666a:yn
TLSH
T18DF68E320CA844B3C0B4857C75AD3765EEED56B2F38D46BF29A016F9A4332B999F1503
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
2896	4944	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_b941a80d828332ba4689cf856222128d_amadey_elex_remcos_smoke-loader.exe

C:\Users\Admin\AppData\Local\Temp\2026-11-03_b941a80d828332ba4689cf856222128d_amadey_elex_remcos_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-03_b941a80d828332ba4689cf856222128d_amadey_elex_remcos_smoke-loader.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 332
  2⤵
  - Program crash
  PID:2896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4944 -ip 4944
1⤵
PID:3372

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

Replay Monitor

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Downloads

memory/4944-2-0x0000000002E30000-0x0000000002E43000-memory.dmp

Download

memory/4944-1-0x0000000002E50000-0x0000000002F50000-memory.dmp