tofsee | 9688c7d5badd6b10159c62fdda755356f1c6fa2458a7847b5e88c8d5b7430022

General

Target

2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe
Size

10.1MB
MD5

3e21993f182d0b9a1caeb9aa39de7680
SHA1

b45f4fcbefb561ba533158831fb4401567cc8af5
SHA256

9688c7d5badd6b10159c62fdda755356f1c6fa2458a7847b5e88c8d5b7430022
SHA512

089d1c847cfcce4a5aa2396f769d887308a1fc993619066cce1cfb356ed382c79ed5268012700951a2877858a3b7579cc5cc301ab6dcda4809e3b51628e7bac2
SSDEEP

24576:rEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZR:4fot

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
2728	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\lstjixwj\ImagePath = "C:\\Windows\\SysWOW64\\lstjixwj\\wnjqhgko.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe

Deletes itself 1 IoCs

pid	Process
2108	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2156	wnjqhgko.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2108	2156	wnjqhgko.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1272	sc.exe
4760	sc.exe
3500	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1832	1436	WerFault.exe	82
3560	2156	WerFault.exe	96

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wnjqhgko.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1436 wrote to memory of 4508	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	86
PID 1436 wrote to memory of 4508	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	86
PID 1436 wrote to memory of 4508	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	86
PID 1436 wrote to memory of 1124	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	88
PID 1436 wrote to memory of 1124	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	88
PID 1436 wrote to memory of 1124	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	88
PID 1436 wrote to memory of 1272	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	90
PID 1436 wrote to memory of 1272	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	90
PID 1436 wrote to memory of 1272	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	90
PID 1436 wrote to memory of 4760	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	92
PID 1436 wrote to memory of 4760	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	92
PID 1436 wrote to memory of 4760	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	92
PID 1436 wrote to memory of 3500	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	94
PID 1436 wrote to memory of 3500	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	94
PID 1436 wrote to memory of 3500	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	94
PID 1436 wrote to memory of 2728	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	97
PID 1436 wrote to memory of 2728	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	97
PID 1436 wrote to memory of 2728	1436	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	97
PID 2156 wrote to memory of 2108	2156	wnjqhgko.exe	102
PID 2156 wrote to memory of 2108	2156	wnjqhgko.exe	102
PID 2156 wrote to memory of 2108	2156	wnjqhgko.exe	102
PID 2156 wrote to memory of 2108	2156	wnjqhgko.exe	102
PID 2156 wrote to memory of 2108	2156	wnjqhgko.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lstjixwj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wnjqhgko.exe" C:\Windows\SysWOW64\lstjixwj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lstjixwj binPath= "C:\Windows\SysWOW64\lstjixwj\wnjqhgko.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lstjixwj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lstjixwj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3500
- 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:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1436 -s 1304
  2⤵
  - Program crash
  PID:1832

C:\Windows\SysWOW64\lstjixwj\wnjqhgko.exe
C:\Windows\SysWOW64\lstjixwj\wnjqhgko.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 512
  2⤵
  - Program crash
  PID:3560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1436 -ip 1436
1⤵
PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2156 -ip 2156
1⤵
PID:1000

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\wnjqhgko.exe

Filesize
12.1MB

MD5
880f1a36e77ce30f2ed576d6aa398f82

SHA1
b946d1772faf8deaa3632fadf2f2b42e17f38ca0

SHA256
a315f84989b5d585448902a475890093e545f62595124ea60c47ac35577b7224

SHA512
a5f9d723709850d644335b6f4937891c864209093701454f9c5d3ba151c45957e14129d4ff60d17d9457167b48ad0818a0b2b3ffe365e3c6d54ccea603ee53af

Download Submit
memory/1436-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1436-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1436-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/1436-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1436-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2108-14-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2108-16-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2108-17-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2156-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2156-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2156-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2156-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads