tofsee | d79b15983c9b584068dc9b1282bad7310071132581c81b58ee813180b1fd409f

General

Target

2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe
Size

10.1MB
MD5

4c84596bb67adb966181bac9a7abcc36
SHA1

da214228e670ea1422ba6906958af114aab704f9
SHA256

d79b15983c9b584068dc9b1282bad7310071132581c81b58ee813180b1fd409f
SHA512

621f5f3a28d4c0b13bb959e6a9b11392902ce342d3fbcfdd64c1c74656ea7bb20d4b12ced83b4a0a72327ae9b989fbfe78999caba31ee349c08dedf4393a97b6
SSDEEP

49152:SLFuiE888888888888888888888888888888888888888888888888888888888/:SLM

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
4936	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\nsnxvubb\ImagePath = "C:\\Windows\\SysWOW64\\nsnxvubb\\lhzzwlky.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe

Deletes itself 1 IoCs

pid	Process
3124	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4448	lhzzwlky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4448 set thread context of 3124	4448	lhzzwlky.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
2620	sc.exe
4856	sc.exe
4824	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	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	sc.exe
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	lhzzwlky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 4708	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	82
PID 4560 wrote to memory of 4708	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	82
PID 4560 wrote to memory of 4708	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	82
PID 4560 wrote to memory of 3236	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	84
PID 4560 wrote to memory of 3236	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	84
PID 4560 wrote to memory of 3236	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	84
PID 4560 wrote to memory of 2620	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	86
PID 4560 wrote to memory of 2620	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	86
PID 4560 wrote to memory of 2620	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	86
PID 4560 wrote to memory of 4856	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	88
PID 4560 wrote to memory of 4856	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	88
PID 4560 wrote to memory of 4856	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	88
PID 4560 wrote to memory of 4824	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	90
PID 4560 wrote to memory of 4824	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	90
PID 4560 wrote to memory of 4824	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	90
PID 4448 wrote to memory of 3124	4448	lhzzwlky.exe	93
PID 4448 wrote to memory of 3124	4448	lhzzwlky.exe	93
PID 4448 wrote to memory of 3124	4448	lhzzwlky.exe	93
PID 4448 wrote to memory of 3124	4448	lhzzwlky.exe	93
PID 4448 wrote to memory of 3124	4448	lhzzwlky.exe	93
PID 4560 wrote to memory of 4936	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	94
PID 4560 wrote to memory of 4936	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	94
PID 4560 wrote to memory of 4936	4560	2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nsnxvubb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lhzzwlky.exe" C:\Windows\SysWOW64\nsnxvubb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nsnxvubb binPath= "C:\Windows\SysWOW64\nsnxvubb\lhzzwlky.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nsnxvubb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nsnxvubb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4824
- 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:4936

C:\Windows\SysWOW64\nsnxvubb\lhzzwlky.exe
C:\Windows\SysWOW64\nsnxvubb\lhzzwlky.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_4c84596bb67adb966181bac9a7abcc36_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3124

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\lhzzwlky.exe

Filesize
14.5MB

MD5
00884ccf6b985901398a1333f34b8609

SHA1
0464df087e54482506b484f4309559aea87f3f8f

SHA256
27bfb430e704d55f7ec0d1aa13681b30da99e4e9c27ec63236a1f5c05445a9da

SHA512
fc550d4b24072c2255a2144f7a7516238c0e0656119f7e8ce0451a4e8017bff7a17dacc8b253da3b54e70afe9126b65ce5440414c9a3334ff1b4a7f4a5f003e1

Download Submit
memory/3124-8-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/3124-14-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/3124-15-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/4448-9-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download
memory/4560-1-0x0000000002E90000-0x0000000002F90000-memory.dmp

Filesize
1024KB

Download
memory/4560-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4560-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4560-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4560-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4560-11-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads