tofsee | 358a096fa1ecc2848fd30e8523d4fb59bcaef82290c1a2d7b38d2ad3e87a612c

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 20:38

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General

Target

2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe
Size

13.0MB
MD5

d0083f94bfaa41baf0ac7ccc6b53eb52
SHA1

7e25b3de9bc7b99eb2b895b1251e4d9e99802cf6
SHA256

358a096fa1ecc2848fd30e8523d4fb59bcaef82290c1a2d7b38d2ad3e87a612c
SHA512

6fa0a3855af6cb414d1d8ce571dedf6cb191667e9d80b65fed83ef13f9d7882a911739e6d109e8e3d18510aaf94dec0689a4a446d1d0c359bd8c112766313a37
SSDEEP

24576:WpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:aoo

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\bjlnvioy = "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
3004	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\bjlnvioy\ImagePath = "C:\\Windows\\SysWOW64\\bjlnvioy\\xokrihlp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2608	xokrihlp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2608 set thread context of 2584	2608	xokrihlp.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2812	sc.exe
2800	sc.exe
1236	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

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	xokrihlp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2748	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	30
PID 2364 wrote to memory of 2748	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	30
PID 2364 wrote to memory of 2748	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	30
PID 2364 wrote to memory of 2748	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	30
PID 2364 wrote to memory of 2804	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	32
PID 2364 wrote to memory of 2804	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	32
PID 2364 wrote to memory of 2804	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	32
PID 2364 wrote to memory of 2804	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	32
PID 2364 wrote to memory of 2812	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	34
PID 2364 wrote to memory of 2812	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	34
PID 2364 wrote to memory of 2812	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	34
PID 2364 wrote to memory of 2812	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	34
PID 2364 wrote to memory of 2800	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	36
PID 2364 wrote to memory of 2800	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	36
PID 2364 wrote to memory of 2800	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	36
PID 2364 wrote to memory of 2800	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	36
PID 2364 wrote to memory of 1236	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	38
PID 2364 wrote to memory of 1236	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	38
PID 2364 wrote to memory of 1236	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	38
PID 2364 wrote to memory of 1236	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	38
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2608 wrote to memory of 2584	2608	xokrihlp.exe	41
PID 2364 wrote to memory of 3004	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	42
PID 2364 wrote to memory of 3004	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	42
PID 2364 wrote to memory of 3004	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	42
PID 2364 wrote to memory of 3004	2364	2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjlnvioy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xokrihlp.exe" C:\Windows\SysWOW64\bjlnvioy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjlnvioy binPath= "C:\Windows\SysWOW64\bjlnvioy\xokrihlp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjlnvioy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjlnvioy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1236
- 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:3004

C:\Windows\SysWOW64\bjlnvioy\xokrihlp.exe
C:\Windows\SysWOW64\bjlnvioy\xokrihlp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_d0083f94bfaa41baf0ac7ccc6b53eb52_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608
- 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:2584

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\xokrihlp.exe

Filesize
11.9MB

MD5
e0c3f2f59ff3dad24fd68e2ee07ef4d2

SHA1
48b5d3bd08086c1c4a0d9bedf64a3879843e4f81

SHA256
27972f901ef143a7a55677f7e81f114c7d0df7d1934f144ac840c3ff726737e9

SHA512
40552d2067f2a30ebba5765db50ebf0022c7f4593c222b45a8ea5679bbb388f6d4bc63ccbe4a147066e4a4333aa7941c20806ccc6e95ce615e39806ba9591f01

Download Submit
memory/2364-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2364-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2364-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2364-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/2364-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2584-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2608-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads