tofsee | 20e206e9d1b1bf3b0f5645fa40f1daae1b2d986bfd4d530dce1babfe26128880

Analysis

max time kernel
149s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-02-2025 12:34

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General

Target

2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe
Size

11.0MB
MD5

b6afd7f940448db235f40131166f15b3
SHA1

e2290a5c73861077cb3fac02d9f26b34d8b72827
SHA256

20e206e9d1b1bf3b0f5645fa40f1daae1b2d986bfd4d530dce1babfe26128880
SHA512

98074853a1c6e486972d77198758db66872da429665c9e4fd1d1cc80a49367a809fab1fb740f3546b36ce0bab2a8fd9628aad4197345994e49dd5ef9fa7a258a
SSDEEP

49152:NqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:NqtYc3

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\wfnyghdk = "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
2748	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\wfnyghdk\ImagePath = "C:\\Windows\\SysWOW64\\wfnyghdk\\fwecmhoc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2712	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	fwecmhoc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2712	3032	fwecmhoc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1492	sc.exe
2332	sc.exe
2852	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	cmd.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 1708	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	30
PID 2520 wrote to memory of 1708	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	30
PID 2520 wrote to memory of 1708	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	30
PID 2520 wrote to memory of 1708	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	30
PID 2520 wrote to memory of 2312	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	32
PID 2520 wrote to memory of 2312	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	32
PID 2520 wrote to memory of 2312	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	32
PID 2520 wrote to memory of 2312	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	32
PID 2520 wrote to memory of 1492	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	34
PID 2520 wrote to memory of 1492	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	34
PID 2520 wrote to memory of 1492	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	34
PID 2520 wrote to memory of 1492	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	34
PID 2520 wrote to memory of 2332	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	36
PID 2520 wrote to memory of 2332	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	36
PID 2520 wrote to memory of 2332	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	36
PID 2520 wrote to memory of 2332	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	36
PID 2520 wrote to memory of 2852	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	38
PID 2520 wrote to memory of 2852	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	38
PID 2520 wrote to memory of 2852	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	38
PID 2520 wrote to memory of 2852	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	38
PID 2520 wrote to memory of 2748	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	41
PID 2520 wrote to memory of 2748	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	41
PID 2520 wrote to memory of 2748	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	41
PID 2520 wrote to memory of 2748	2520	2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe	41
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43
PID 3032 wrote to memory of 2712	3032	fwecmhoc.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfnyghdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fwecmhoc.exe" C:\Windows\SysWOW64\wfnyghdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wfnyghdk binPath= "C:\Windows\SysWOW64\wfnyghdk\fwecmhoc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wfnyghdk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wfnyghdk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:2748

C:\Windows\SysWOW64\wfnyghdk\fwecmhoc.exe
C:\Windows\SysWOW64\wfnyghdk\fwecmhoc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_b6afd7f940448db235f40131166f15b3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- 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:2712

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
10.9MB

MD5
064ff886ce1dfae017a3a8ffd297c74d

SHA1
93a9531d32673ebeb3f9adc54aebe0caa6ce9ecc

SHA256
5f51d30f289b1a454e24a69f7b6bedbe46feac7777fb99b903edcb0e12064ff4

SHA512
0da174a798c099d9e03ddd4b6a015c37ae013aa18dc6c6327153fea8f9a551b8f44d7a3fd7d89ccdee1be333c68c079b1349bcfd13e5dff38b898336e493458a

Download Submit
memory/2520-2-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2520-3-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2520-5-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2712-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3032-13-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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