tofsee | b8434955e89048aed065797f41580e2e57c4c88a0a041fe5dd318b93cd8bf488

General

Target

2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe
Size

12.8MB
MD5

5f6da24126e4a10d918138c0fede00b3
SHA1

f4dbc10b7816a295ae5fbe0dedc97c0cc5a77efd
SHA256

b8434955e89048aed065797f41580e2e57c4c88a0a041fe5dd318b93cd8bf488
SHA512

d31544ad2aea2469c757f7d6ca9e432c9363a8907f3437a6b944dd339a28c092cd62934e6d1f98af7ec72c26e2487da6ffdca4c025876ff2c332d6a06bc75cb2
SSDEEP

24576:BpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttH:booh

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
2680	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\fxnvfias\ImagePath = "C:\\Windows\\SysWOW64\\fxnvfias\\dpocnxfz.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe

Deletes itself 1 IoCs

pid	Process
2408	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2604	dpocnxfz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 2408	2604	dpocnxfz.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4504	sc.exe
2988	sc.exe
2996	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4192	1552	WerFault.exe	83
3076	2604	WerFault.exe	97

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_5f6da24126e4a10d918138c0fede00b3_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dpocnxfz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 764	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	87
PID 1552 wrote to memory of 764	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	87
PID 1552 wrote to memory of 764	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	87
PID 1552 wrote to memory of 3696	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	89
PID 1552 wrote to memory of 3696	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	89
PID 1552 wrote to memory of 3696	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	89
PID 1552 wrote to memory of 4504	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	91
PID 1552 wrote to memory of 4504	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	91
PID 1552 wrote to memory of 4504	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	91
PID 1552 wrote to memory of 2988	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	93
PID 1552 wrote to memory of 2988	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	93
PID 1552 wrote to memory of 2988	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	93
PID 1552 wrote to memory of 2996	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	95
PID 1552 wrote to memory of 2996	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	95
PID 1552 wrote to memory of 2996	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	95
PID 1552 wrote to memory of 2680	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	98
PID 1552 wrote to memory of 2680	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	98
PID 1552 wrote to memory of 2680	1552	2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe	98
PID 2604 wrote to memory of 2408	2604	dpocnxfz.exe	103
PID 2604 wrote to memory of 2408	2604	dpocnxfz.exe	103
PID 2604 wrote to memory of 2408	2604	dpocnxfz.exe	103
PID 2604 wrote to memory of 2408	2604	dpocnxfz.exe	103
PID 2604 wrote to memory of 2408	2604	dpocnxfz.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fxnvfias\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dpocnxfz.exe" C:\Windows\SysWOW64\fxnvfias\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fxnvfias binPath= "C:\Windows\SysWOW64\fxnvfias\dpocnxfz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fxnvfias "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fxnvfias
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2996
- 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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1552 -s 892
  2⤵
  - Program crash
  PID:4192

C:\Windows\SysWOW64\fxnvfias\dpocnxfz.exe
C:\Windows\SysWOW64\fxnvfias\dpocnxfz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_5f6da24126e4a10d918138c0fede00b3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2604 -s 512
  2⤵
  - Program crash
  PID:3076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1552 -ip 1552
1⤵
PID:4612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2604 -ip 2604
1⤵
PID:4272

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\dpocnxfz.exe

Filesize
14.4MB

MD5
46df4f07160d3d0b82d365ad7282d5f4

SHA1
d1a44d466c0aab1d8c0878cf34b5135616027e67

SHA256
561e0cee45dfdf298f4c6a89b263fe54c2b92731a803684e42458288285c9349

SHA512
5eb293708a7daaba2e762fc9cce9d4f8597ee67c4439334ad8568774e9062a5be0fdf1a4d63a797f6f7fc4be07466865f40965d9931aa4b2b51383a952304bcb

Download Submit
memory/1552-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1552-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1552-2-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/1552-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1552-8-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/1552-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2408-14-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2408-16-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2408-17-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2604-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2604-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2604-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2604-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads