tofsee | 6750b6fb0c62f8dbb8d2c65aa6149f1a08fc3e0da333449e56d735ad52e7898e

General

Target

2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe
Size

13.0MB
MD5

0e10aea1cfb39b35a3a5b283d31fd5bf
SHA1

0d849c20326f2c9522c60bb8e28afe0d955c5898
SHA256

6750b6fb0c62f8dbb8d2c65aa6149f1a08fc3e0da333449e56d735ad52e7898e
SHA512

3a0e37fe7fd49ff71635cddf0d8514ebe826a9521c45f45c6ec215983c79a83a9bf65dd64547e57a1b623604ec4fa4d1240503b07b4ae7381af3f19ee1debb05
SSDEEP

24576:qpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttJ:+oo/

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
1640	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\ourtknsc\ImagePath = "C:\\Windows\\SysWOW64\\ourtknsc\\kgyyvkjx.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe

Deletes itself 1 IoCs

pid	Process
3664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1792	kgyyvkjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1792 set thread context of 3664	1792	kgyyvkjx.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
3988	sc.exe
3604	sc.exe
1420	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
5060	2320	WerFault.exe	82
2696	1792	WerFault.exe	93

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_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	sc.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	kgyyvkjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 4876	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	83
PID 2320 wrote to memory of 4876	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	83
PID 2320 wrote to memory of 4876	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	83
PID 2320 wrote to memory of 3164	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	85
PID 2320 wrote to memory of 3164	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	85
PID 2320 wrote to memory of 3164	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	85
PID 2320 wrote to memory of 3988	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	87
PID 2320 wrote to memory of 3988	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	87
PID 2320 wrote to memory of 3988	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	87
PID 2320 wrote to memory of 3604	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	89
PID 2320 wrote to memory of 3604	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	89
PID 2320 wrote to memory of 3604	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	89
PID 2320 wrote to memory of 1420	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	91
PID 2320 wrote to memory of 1420	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	91
PID 2320 wrote to memory of 1420	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	91
PID 2320 wrote to memory of 1640	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	94
PID 2320 wrote to memory of 1640	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	94
PID 2320 wrote to memory of 1640	2320	2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe	94
PID 1792 wrote to memory of 3664	1792	kgyyvkjx.exe	99
PID 1792 wrote to memory of 3664	1792	kgyyvkjx.exe	99
PID 1792 wrote to memory of 3664	1792	kgyyvkjx.exe	99
PID 1792 wrote to memory of 3664	1792	kgyyvkjx.exe	99
PID 1792 wrote to memory of 3664	1792	kgyyvkjx.exe	99

C:\Users\Admin\AppData\Local\Temp\2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ourtknsc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kgyyvkjx.exe" C:\Windows\SysWOW64\ourtknsc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ourtknsc binPath= "C:\Windows\SysWOW64\ourtknsc\kgyyvkjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ourtknsc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ourtknsc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1420
- 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:1640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 1300
  2⤵
  - Program crash
  PID:5060

C:\Windows\SysWOW64\ourtknsc\kgyyvkjx.exe
C:\Windows\SysWOW64\ourtknsc\kgyyvkjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_0e10aea1cfb39b35a3a5b283d31fd5bf_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 512
  2⤵
  - Program crash
  PID:2696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2320 -ip 2320
1⤵
PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1792 -ip 1792
1⤵
PID:856

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\kgyyvkjx.exe

Filesize
10.8MB

MD5
6dadc40a275257c35a70397158d9dbbd

SHA1
f75fefc0ae96cbdfac560c05964c071ad3b665ea

SHA256
d8aef3d1ee47620bc5f6c5d75a3940622eb5834b7a6ce083f78faea3a993946a

SHA512
234563a57e34b32c5fc835ebfe111aac68d5175395f73de377dac70455f12e4a58594f85acde1cf84c13f70967ff1147632659e193e862e12334d94afcf78af9

Download Submit
memory/1792-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1792-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1792-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1792-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2320-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2320-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/2320-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2320-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2320-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2320-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3664-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3664-16-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/3664-17-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads