tofsee | 041bc2517d28c165af6f2d9c307ee80ba34c6841b1523c9e67d81afec2ddf046

General

Target

2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe
Size

12.3MB
MD5

f2bdc578585d0f246e1c7a00b172c541
SHA1

18844a0e15ba1ede158e432116377713c9217e1f
SHA256

041bc2517d28c165af6f2d9c307ee80ba34c6841b1523c9e67d81afec2ddf046
SHA512

db881f6ce3c602af1740eefce4987a4e2c5c7050a479f49e666f8235a63be5ce2edaa6c133bdb77e7a73c85d8cb147f895b725cf42236943a4d76132269f7dd4
SSDEEP

24576:R6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQU:4WdLQku

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
752	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\cfonmsau\ImagePath = "C:\\Windows\\SysWOW64\\cfonmsau\\fncgtraa.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe

Deletes itself 1 IoCs

pid	Process
4820	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4108	fncgtraa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4108 set thread context of 4820	4108	fncgtraa.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
1528	sc.exe
4652	sc.exe
3220	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4988	2516	WerFault.exe	82
4552	4108	WerFault.exe	98

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	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	fncgtraa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2488	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	84
PID 2516 wrote to memory of 2488	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	84
PID 2516 wrote to memory of 2488	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	84
PID 2516 wrote to memory of 3996	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	86
PID 2516 wrote to memory of 3996	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	86
PID 2516 wrote to memory of 3996	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	86
PID 2516 wrote to memory of 1528	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	88
PID 2516 wrote to memory of 1528	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	88
PID 2516 wrote to memory of 1528	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	88
PID 2516 wrote to memory of 4652	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	92
PID 2516 wrote to memory of 4652	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	92
PID 2516 wrote to memory of 4652	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	92
PID 2516 wrote to memory of 3220	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	94
PID 2516 wrote to memory of 3220	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	94
PID 2516 wrote to memory of 3220	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	94
PID 2516 wrote to memory of 752	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	101
PID 2516 wrote to memory of 752	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	101
PID 2516 wrote to memory of 752	2516	2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe	101
PID 4108 wrote to memory of 4820	4108	fncgtraa.exe	108
PID 4108 wrote to memory of 4820	4108	fncgtraa.exe	108
PID 4108 wrote to memory of 4820	4108	fncgtraa.exe	108
PID 4108 wrote to memory of 4820	4108	fncgtraa.exe	108
PID 4108 wrote to memory of 4820	4108	fncgtraa.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfonmsau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fncgtraa.exe" C:\Windows\SysWOW64\cfonmsau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cfonmsau binPath= "C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cfonmsau "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cfonmsau
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3220
- 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:752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1300
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe
C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4108 -s 528
  2⤵
  - Program crash
  PID:4552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2516 -ip 2516
1⤵
PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4108 -ip 4108
1⤵
PID:1196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.7MB

MD5
d022211c167109405961bd965a5e82f7

SHA1
5905fe3be1be30f84de41d8caf8e7523a5f0fceb

SHA256
31c57ebb2619ba49d14b5c6895d906fd5f5452c77bf5447dd076b22d9dda3dc3

SHA512
45fb267aadbd3f536fbdf6e57021fbb26fab588b122e718ed821591fd43b46921da9d92c6ce7ee36dd7d982f9aabc8e45e699ea48988c1bcebf58dc88d6a757e

Download Submit
memory/2516-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2516-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2516-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2516-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2516-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/4108-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4108-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4108-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4108-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4820-14-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/4820-16-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/4820-17-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads