tofsee | af7459c0ee91c6b97f86e2157c3161d114fee74be37e562f4ecdacd1a53cb275

General

Target

2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe
Size

13.7MB
MD5

4b0e330b5c6583fedcc935a0186d4f5f
SHA1

62d45c7e61a636c6ceee3a3538179ca19d519400
SHA256

af7459c0ee91c6b97f86e2157c3161d114fee74be37e562f4ecdacd1a53cb275
SHA512

8520a316fad2d39b720c4e274900d688e694e4c4d506747c5cc32bf2666464fb68bc5663d7c7dcbc538145163bdb78600884e327ed2d7b54d8b0d68d80c90ce3
SSDEEP

24576:IpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttP:koo

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
1404	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\kknsmnad\ImagePath = "C:\\Windows\\SysWOW64\\kknsmnad\\rielcbfj.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-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe

Deletes itself 1 IoCs

pid	Process
116	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5044	rielcbfj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5044 set thread context of 116	5044	rielcbfj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4612	sc.exe
3672	sc.exe
2924	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
2976	3980	WerFault.exe	82
548	5044	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	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_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	rielcbfj.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 3980 wrote to memory of 64	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	86
PID 3980 wrote to memory of 64	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	86
PID 3980 wrote to memory of 64	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	86
PID 3980 wrote to memory of 2132	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	88
PID 3980 wrote to memory of 2132	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	88
PID 3980 wrote to memory of 2132	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	88
PID 3980 wrote to memory of 4612	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	90
PID 3980 wrote to memory of 4612	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	90
PID 3980 wrote to memory of 4612	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	90
PID 3980 wrote to memory of 3672	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	92
PID 3980 wrote to memory of 3672	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	92
PID 3980 wrote to memory of 3672	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	92
PID 3980 wrote to memory of 2924	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	94
PID 3980 wrote to memory of 2924	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	94
PID 3980 wrote to memory of 2924	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	94
PID 3980 wrote to memory of 1404	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	97
PID 3980 wrote to memory of 1404	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	97
PID 3980 wrote to memory of 1404	3980	2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe	97
PID 5044 wrote to memory of 116	5044	rielcbfj.exe	102
PID 5044 wrote to memory of 116	5044	rielcbfj.exe	102
PID 5044 wrote to memory of 116	5044	rielcbfj.exe	102
PID 5044 wrote to memory of 116	5044	rielcbfj.exe	102
PID 5044 wrote to memory of 116	5044	rielcbfj.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kknsmnad\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:64
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rielcbfj.exe" C:\Windows\SysWOW64\kknsmnad\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kknsmnad binPath= "C:\Windows\SysWOW64\kknsmnad\rielcbfj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kknsmnad "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kknsmnad
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2924
- 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:1404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 1036
  2⤵
  - Program crash
  PID:2976

C:\Windows\SysWOW64\kknsmnad\rielcbfj.exe
C:\Windows\SysWOW64\kknsmnad\rielcbfj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4b0e330b5c6583fedcc935a0186d4f5f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 512
  2⤵
  - Program crash
  PID:548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3980 -ip 3980
1⤵
PID:1636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 5044 -ip 5044
1⤵
PID:3420

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\rielcbfj.exe

Filesize
11.2MB

MD5
c680028d3b99fca077ab33825b991241

SHA1
3466e7aaec3f9efe86308a159218535e57ccdbfa

SHA256
bcd0335c74c9827304d77ddc45ea9bfa172a0d31c8bbdac28fef860f6ed618f3

SHA512
3742e72e8c7227da4adc4ccb6e97af9fc46a8870435c72bd918f4195897a1189a9bd2b1c3327a14cf83796341e39dd043ef592409bd138c9362253045c9f4bca

Download Submit
memory/116-14-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download
memory/116-17-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download
memory/116-16-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download
memory/3980-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3980-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3980-1-0x0000000000450000-0x0000000000550000-memory.dmp

Filesize
1024KB

Download
memory/3980-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3980-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3980-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5044-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5044-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5044-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5044-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads