tofsee | f954da5648966e7534005b93d35de289192a6cc3e8f4e765b7de80bc2675c6d8

Analysis

max time kernel
144s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31/01/2025, 20:16

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General

Target

2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe
Size

10.0MB
MD5

dc0400cc759c1d5f7ca5c11b9edda600
SHA1

fff821ce69dd9ae482131d85e4bb6e218eb40435
SHA256

f954da5648966e7534005b93d35de289192a6cc3e8f4e765b7de80bc2675c6d8
SHA512

6fecf099f5aa85ea2d5dcd7cd3ae152261a5c20e02d71fc4ee43675f04286919f865c5ea7f3b66d8b005de8ef1843c80d6c278e116b5161a052b3537ec9a4162
SSDEEP

24576:h6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQf:IWdLQk

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\uyxvnwvl = "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
2716	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\uyxvnwvl\ImagePath = "C:\\Windows\\SysWOW64\\uyxvnwvl\\pnwxgcrn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	pnwxgcrn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 2976	2696	pnwxgcrn.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2964	sc.exe
860	sc.exe
2352	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	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pnwxgcrn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 3032	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	30
PID 2356 wrote to memory of 3032	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	30
PID 2356 wrote to memory of 3032	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	30
PID 2356 wrote to memory of 3032	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	30
PID 2356 wrote to memory of 2020	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	32
PID 2356 wrote to memory of 2020	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	32
PID 2356 wrote to memory of 2020	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	32
PID 2356 wrote to memory of 2020	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	32
PID 2356 wrote to memory of 2352	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	34
PID 2356 wrote to memory of 2352	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	34
PID 2356 wrote to memory of 2352	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	34
PID 2356 wrote to memory of 2352	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	34
PID 2356 wrote to memory of 2964	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	36
PID 2356 wrote to memory of 2964	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	36
PID 2356 wrote to memory of 2964	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	36
PID 2356 wrote to memory of 2964	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	36
PID 2356 wrote to memory of 860	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	38
PID 2356 wrote to memory of 860	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	38
PID 2356 wrote to memory of 860	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	38
PID 2356 wrote to memory of 860	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	38
PID 2356 wrote to memory of 2716	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	41
PID 2356 wrote to memory of 2716	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	41
PID 2356 wrote to memory of 2716	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	41
PID 2356 wrote to memory of 2716	2356	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	41
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43
PID 2696 wrote to memory of 2976	2696	pnwxgcrn.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uyxvnwvl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnwxgcrn.exe" C:\Windows\SysWOW64\uyxvnwvl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uyxvnwvl binPath= "C:\Windows\SysWOW64\uyxvnwvl\pnwxgcrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uyxvnwvl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uyxvnwvl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- 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:2716

C:\Windows\SysWOW64\uyxvnwvl\pnwxgcrn.exe
C:\Windows\SysWOW64\uyxvnwvl\pnwxgcrn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:2976

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\pnwxgcrn.exe

Filesize
12.3MB

MD5
3502db45ce148bf66f8b03b8513f3f84

SHA1
e9433941849c22a050cae0c4dab4a4947f37791c

SHA256
ea445c471438d18e2fa529836a09e51b4f735257c4a555fdd3d64a850d3cfe22

SHA512
09cc2878416f0d52f4b91b83e4a72624f46bd907eed2e5643a8efe82974fda984060afdde50911983c787c50f52c6a0a1fa8a2d1a1c7ec685edc90ddf8b8d2ac

Download Submit
memory/2356-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2356-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2356-9-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2356-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2356-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2356-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2696-16-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2976-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads