tofsee | 6150472c5276109b11fa5807758de86251c0c35e7999d4992518ca58fc034f97

Analysis

max time kernel
148s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
12/02/2025, 21:54

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General

Target

2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe
Size

12.6MB
MD5

ff5414d20310ec2257e8494640f8cd7c
SHA1

5a1e1d1b4d07f5a71a6d5578b67b2c3d3bc53504
SHA256

6150472c5276109b11fa5807758de86251c0c35e7999d4992518ca58fc034f97
SHA512

37e2d6399d93fabf18101183bfef78a8363c9eb5d50209d45ebbba3b7136704f8350814536fe49b8a1ceb3d9611c23a84eee9d1750edc20e519b72a1811e0227
SSDEEP

24576:LEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZY:Yfot+

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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\lvnkfztb = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2636	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\lvnkfztb\ImagePath = "C:\\Windows\\SysWOW64\\lvnkfztb\\fwecmhoc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2764	fwecmhoc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2764 set thread context of 2652	2764	fwecmhoc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
3020	sc.exe
3044	sc.exe
2804	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

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	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.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	fwecmhoc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2732	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	30
PID 2672 wrote to memory of 2732	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	30
PID 2672 wrote to memory of 2732	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	30
PID 2672 wrote to memory of 2732	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	30
PID 2672 wrote to memory of 3060	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	32
PID 2672 wrote to memory of 3060	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	32
PID 2672 wrote to memory of 3060	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	32
PID 2672 wrote to memory of 3060	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	32
PID 2672 wrote to memory of 3044	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	34
PID 2672 wrote to memory of 3044	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	34
PID 2672 wrote to memory of 3044	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	34
PID 2672 wrote to memory of 3044	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	34
PID 2672 wrote to memory of 2804	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	36
PID 2672 wrote to memory of 2804	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	36
PID 2672 wrote to memory of 2804	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	36
PID 2672 wrote to memory of 2804	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	36
PID 2672 wrote to memory of 3020	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	38
PID 2672 wrote to memory of 3020	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	38
PID 2672 wrote to memory of 3020	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	38
PID 2672 wrote to memory of 3020	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	38
PID 2672 wrote to memory of 2636	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	41
PID 2672 wrote to memory of 2636	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	41
PID 2672 wrote to memory of 2636	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	41
PID 2672 wrote to memory of 2636	2672	2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe	41
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43
PID 2764 wrote to memory of 2652	2764	fwecmhoc.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lvnkfztb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fwecmhoc.exe" C:\Windows\SysWOW64\lvnkfztb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lvnkfztb binPath= "C:\Windows\SysWOW64\lvnkfztb\fwecmhoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lvnkfztb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lvnkfztb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3020
- 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:2636

C:\Windows\SysWOW64\lvnkfztb\fwecmhoc.exe
C:\Windows\SysWOW64\lvnkfztb\fwecmhoc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-12_ff5414d20310ec2257e8494640f8cd7c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- 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:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\fwecmhoc.exe

Filesize
11.6MB

MD5
f713f1df268dc8f9456c7fbd2139185d

SHA1
7e17b1fb3358be38c0dbe08c38330a6cf5cb8436

SHA256
e48c67b0fee4203b90806271610f12da252cd18740ac9227edab3b3998590f9e

SHA512
6849b355970e30d2f42f84c6b9811aa4db31816390b87d1f95503a8af41f6758a7e066a440ac6625c8da5ad5f97f2f8b3bf13094f9fd02f0c08af7313fde2163

Download Submit
memory/2652-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2652-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2672-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2764-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads