tofsee | b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb

Analysis

max time kernel
143s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 01:47

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General

Target

2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
Size

12.8MB
MD5

294baf6362d4f49cfe0cea1ed29d6345
SHA1

eec8cc0feeb35395e2defd1d53005501d5c1c53b
SHA256

b4e5b6c2e6a59c349804cf87e5663bbcd50ac96aceaf926526d67398a1610fdb
SHA512

9c111d5b6835c36de1ac4411359df8f042b9c90b0b5b30af076225487b7d373f334fa83f5c05f91023f1b47bb09dc5f5bc2a6dbe372a1c6c1310eff2a3a913bd
SSDEEP

24576:mpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttD:qoo9

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\mtwztdsj = "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
3020	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\mtwztdsj\ImagePath = "C:\\Windows\\SysWOW64\\mtwztdsj\\srfhvstl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	srfhvstl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 2936	2884	srfhvstl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2148	sc.exe
2740	sc.exe
2900	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	srfhvstl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 1740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2972 wrote to memory of 1740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2972 wrote to memory of 1740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2972 wrote to memory of 1740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	30
PID 2972 wrote to memory of 2380	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2972 wrote to memory of 2380	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2972 wrote to memory of 2380	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2972 wrote to memory of 2380	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	32
PID 2972 wrote to memory of 2148	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2972 wrote to memory of 2148	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2972 wrote to memory of 2148	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2972 wrote to memory of 2148	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	34
PID 2972 wrote to memory of 2740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2972 wrote to memory of 2740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2972 wrote to memory of 2740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2972 wrote to memory of 2740	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	36
PID 2972 wrote to memory of 2900	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2972 wrote to memory of 2900	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2972 wrote to memory of 2900	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2972 wrote to memory of 2900	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	38
PID 2972 wrote to memory of 3020	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	41
PID 2972 wrote to memory of 3020	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	41
PID 2972 wrote to memory of 3020	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	41
PID 2972 wrote to memory of 3020	2972	2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe	41
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43
PID 2884 wrote to memory of 2936	2884	srfhvstl.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mtwztdsj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\srfhvstl.exe" C:\Windows\SysWOW64\mtwztdsj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mtwztdsj binPath= "C:\Windows\SysWOW64\mtwztdsj\srfhvstl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mtwztdsj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mtwztdsj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2900
- 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:3020

C:\Windows\SysWOW64\mtwztdsj\srfhvstl.exe
C:\Windows\SysWOW64\mtwztdsj\srfhvstl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_294baf6362d4f49cfe0cea1ed29d6345_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- 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:2936

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\srfhvstl.exe

Filesize
14.4MB

MD5
3b2d1c9f45c6349047e07c6fd1577f94

SHA1
e51ac688e45c92f0973b1d4e243f1fa999e217dd

SHA256
ac1018213f93e084be26853f8a4b430e7fd43faa037a0f1c2d44d7af3c19d72b

SHA512
f2bcdb18e2aad9a327bbb59392d466e412d2cb27e62538cffd5b9e37ae4faa0b264a6846e43c1bffed46b7a1ceae9a93979a0b2e73f6fd333d0910c4ddc6c2fa

Download Submit
memory/2884-15-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2936-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-11-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2936-14-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2936-17-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2936-16-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2936-18-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2972-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2972-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2972-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2972-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/2972-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads