tofsee | 120f21f223ace3fae0054b1e17a5416602f1c2d16e2a774d4746be56d3120a28

General

Target

2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe
Size

13.2MB
MD5

6937aad9b667b4ba21f4d2d219ea3641
SHA1

5248524013ad78970facb6b83e769a78a8433ead
SHA256

120f21f223ace3fae0054b1e17a5416602f1c2d16e2a774d4746be56d3120a28
SHA512

9a94aee744357a2452465639e6d0ca7a6e94805f403169fa13bb799c6e72a6c0c1745b512e711de493dc0c10a1603902991ad7919ded3927da294e4560e24fac
SSDEEP

393216:vXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1252	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\ncmyckv\ImagePath = "C:\\Windows\\SysWOW64\\ncmyckv\\kfjbrcec.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe

Deletes itself 1 IoCs

pid	Process
2028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4276	kfjbrcec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4276 set thread context of 2028	4276	kfjbrcec.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
3620	sc.exe
1452	sc.exe
2444	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	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_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	kfjbrcec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 4420	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	83
PID 3108 wrote to memory of 4420	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	83
PID 3108 wrote to memory of 4420	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	83
PID 3108 wrote to memory of 3288	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	85
PID 3108 wrote to memory of 3288	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	85
PID 3108 wrote to memory of 3288	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	85
PID 3108 wrote to memory of 2444	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	87
PID 3108 wrote to memory of 2444	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	87
PID 3108 wrote to memory of 2444	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	87
PID 3108 wrote to memory of 3620	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	89
PID 3108 wrote to memory of 3620	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	89
PID 3108 wrote to memory of 3620	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	89
PID 3108 wrote to memory of 1452	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	91
PID 3108 wrote to memory of 1452	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	91
PID 3108 wrote to memory of 1452	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	91
PID 4276 wrote to memory of 2028	4276	kfjbrcec.exe	94
PID 4276 wrote to memory of 2028	4276	kfjbrcec.exe	94
PID 4276 wrote to memory of 2028	4276	kfjbrcec.exe	94
PID 4276 wrote to memory of 2028	4276	kfjbrcec.exe	94
PID 4276 wrote to memory of 2028	4276	kfjbrcec.exe	94
PID 3108 wrote to memory of 1252	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	95
PID 3108 wrote to memory of 1252	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	95
PID 3108 wrote to memory of 1252	3108	2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ncmyckv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kfjbrcec.exe" C:\Windows\SysWOW64\ncmyckv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ncmyckv binPath= "C:\Windows\SysWOW64\ncmyckv\kfjbrcec.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ncmyckv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ncmyckv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1452
- 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:1252

C:\Windows\SysWOW64\ncmyckv\kfjbrcec.exe
C:\Windows\SysWOW64\ncmyckv\kfjbrcec.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_6937aad9b667b4ba21f4d2d219ea3641_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2028

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\kfjbrcec.exe

Filesize
14.7MB

MD5
aec91cf0a0ef1a7bf6d9a7d6d9e735b8

SHA1
e30c3a1ec1d1335ab2be3a911a301fe967a4be23

SHA256
49d80121519d4febcde8807f6515c46543aff6c944314a37d6bdbdf2b92ce73d

SHA512
821992c69e76c239ad0b2416833ccab4443a72aac41bbc8c5905bb723e51995d5409b2eca3b4bcf1f458c29e5148d97a89d65505de4a9a726bb74332017abadf

Download Submit
memory/2028-10-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/2028-22-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/2028-21-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/2028-20-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/2028-16-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/3108-18-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/3108-15-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/3108-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3108-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/3108-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3108-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4276-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4276-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4276-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads