tofsee | 0fda81e7115c62f0c9399b73c6c5e80aebc2135cc460da602878dc859de60139

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/07/2026, 21:47

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General

Target
2026-07-31_3591f58bf8cf29c9a9bad4a53114fb54_amadey_elex_remcos_smoke-loader.exe
Size 11.0MB
Sample260731-1na2vasvds
SHA256 0fda81e7115c62f0c9399b73c6c5e80aebc2135cc460da602878dc859de60139
MD5 3591f58bf8cf29c9a9bad4a53114fb54
SHA1 a1cd93274b44b7db8578fd7cca78d77ff2aa46bd
SHA512 316732aea577c3f18e94678eb1f0ce53c70f3d2d36c99d2f30d8f5a6f3d04b5acbb2f93d05630de2fb455e1ca10a3c77fa5be6fdc2dbb87a41d7e215381dcd69
SSDEEP 49152:DawwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwY:D
TLSH
T1C3C65C70D4B38A3EC474067CBB193B155ABFE7B0DB8925F6939008F3586B915386628F
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
4176	980	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	2026-07-31_3591f58bf8cf29c9a9bad4a53114fb54_amadey_elex_remcos_smoke-loader.exe

C:\Users\Admin\AppData\Local\Temp\2026-07-31_3591f58bf8cf29c9a9bad4a53114fb54_amadey_elex_remcos_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-31_3591f58bf8cf29c9a9bad4a53114fb54_amadey_elex_remcos_smoke-loader.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 324
  2⤵
  - Program crash
  PID:4176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 980 -ip 980
1⤵
PID:5852

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/980-1-0x0000000000A80000-0x0000000000B80000-memory.dmp

Download

memory/980-2-0x0000000002650000-0x0000000002663000-memory.dmp