tofsee | ac07bd844dd88ff07f954b2a9fdf3a21fe90b78bb2866862ee5ff00e5604b8ee

Analysis

max time kernel
144s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:44

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General

Target

2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe
Size

13.6MB
MD5

d2a6285281b9251fad852e6674d627d5
SHA1

00bae2fe3cf6f832252f453b8b3f1373b563b13c
SHA256

ac07bd844dd88ff07f954b2a9fdf3a21fe90b78bb2866862ee5ff00e5604b8ee
SHA512

1ede58994358725fa808b164cafc53e6f0ec383e747575b912cd0fa983bd584aef0c254da32c4cbeedfc1cdc67139b2d9d7ae450ca396cf9a194aeaa4b57ff0f
SSDEEP

49152:2qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:2qtYc3

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\nnsekeia = "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
588	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\nnsekeia\ImagePath = "C:\\Windows\\SysWOW64\\nnsekeia\\wnvtdyft.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2180	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2680	wnvtdyft.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2180	2680	wnvtdyft.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2944	sc.exe
2664	sc.exe
2624	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	sc.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	2025-02-01_d2a6285281b9251fad852e6674d627d5_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	wnvtdyft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 2760	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2816 wrote to memory of 2760	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2816 wrote to memory of 2760	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2816 wrote to memory of 2760	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	30
PID 2816 wrote to memory of 2724	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2816 wrote to memory of 2724	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2816 wrote to memory of 2724	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2816 wrote to memory of 2724	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	32
PID 2816 wrote to memory of 2944	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2816 wrote to memory of 2944	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2816 wrote to memory of 2944	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2816 wrote to memory of 2944	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	34
PID 2816 wrote to memory of 2664	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2816 wrote to memory of 2664	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2816 wrote to memory of 2664	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2816 wrote to memory of 2664	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	36
PID 2816 wrote to memory of 2624	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	38
PID 2816 wrote to memory of 2624	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	38
PID 2816 wrote to memory of 2624	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	38
PID 2816 wrote to memory of 2624	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	38
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2680 wrote to memory of 2180	2680	wnvtdyft.exe	41
PID 2816 wrote to memory of 588	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	42
PID 2816 wrote to memory of 588	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	42
PID 2816 wrote to memory of 588	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	42
PID 2816 wrote to memory of 588	2816	2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nnsekeia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wnvtdyft.exe" C:\Windows\SysWOW64\nnsekeia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nnsekeia binPath= "C:\Windows\SysWOW64\nnsekeia\wnvtdyft.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nnsekeia "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nnsekeia
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2624
- 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:588

C:\Windows\SysWOW64\nnsekeia\wnvtdyft.exe
C:\Windows\SysWOW64\nnsekeia\wnvtdyft.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d2a6285281b9251fad852e6674d627d5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- 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:2180

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\wnvtdyft.exe

Filesize
12.5MB

MD5
16e3ddc1782e139a006d0e2f087b4938

SHA1
126b33902fb2151dec55f08db9faeb1df2e7468a

SHA256
d3ac74c9788ff895e43322c3c4000c6f469bcda622644f9dd4dc6e04c62b73df

SHA512
5b0d3df4282ab6ab100735cd30414a9bfa3d74f71790195d98c549f45f6df1696610b84e1493ff2139d7f4ed4ab7843b9b45d46228a4c62c0cb74d7691ec8b30

Download Submit
memory/2180-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2180-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2180-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2180-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2180-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2680-12-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2816-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2816-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2816-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/2816-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2816-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2816-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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