tofsee | 283630d3f47428df99023d8f84349f2b72bea15a85009f1fbac40cede0fcb9c3

General

Target

2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe
Size

10.3MB
MD5

b5227c2ef7f856154498e53b41fdce92
SHA1

a751833e75091c25447d25aa44e4d2d1f051526f
SHA256

283630d3f47428df99023d8f84349f2b72bea15a85009f1fbac40cede0fcb9c3
SHA512

f0c025453d6a3838d4d4795d18a7cdac35ff86a5e1bee180dc0746143cd964bdc710b6805698e7e05e4f43ff30fcfd524046b0740078ae2accd31af3b398e171
SSDEEP

24576:T6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQN:eWdLQk7

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
64	1384	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4828	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\thnuncq\ImagePath = "C:\\Windows\\SysWOW64\\thnuncq\\tbquhfoo.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-1-5-21-3932017190-1449707826-1445630-1000\Control Panel\International\Geo\Nation	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe

Deletes itself 1 IoCs

pid	Process
3944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	tbquhfoo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 3944	2812	tbquhfoo.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
3788	sc.exe
3692	sc.exe
2832	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
4792	3916	WerFault.exe	85
4948	2812	WerFault.exe	99

System Location Discovery: System Language Discovery 1 TTPs 10 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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tbquhfoo.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1124	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 856	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	89
PID 3916 wrote to memory of 856	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	89
PID 3916 wrote to memory of 856	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	89
PID 3916 wrote to memory of 4308	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	91
PID 3916 wrote to memory of 4308	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	91
PID 3916 wrote to memory of 4308	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	91
PID 3916 wrote to memory of 3788	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	93
PID 3916 wrote to memory of 3788	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	93
PID 3916 wrote to memory of 3788	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	93
PID 3916 wrote to memory of 3692	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	95
PID 3916 wrote to memory of 3692	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	95
PID 3916 wrote to memory of 3692	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	95
PID 3916 wrote to memory of 2832	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	97
PID 3916 wrote to memory of 2832	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	97
PID 3916 wrote to memory of 2832	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	97
PID 3916 wrote to memory of 4828	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	100
PID 3916 wrote to memory of 4828	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	100
PID 3916 wrote to memory of 4828	3916	2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe	100
PID 2812 wrote to memory of 3944	2812	tbquhfoo.exe	105
PID 2812 wrote to memory of 3944	2812	tbquhfoo.exe	105
PID 2812 wrote to memory of 3944	2812	tbquhfoo.exe	105
PID 2812 wrote to memory of 3944	2812	tbquhfoo.exe	105
PID 2812 wrote to memory of 3944	2812	tbquhfoo.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\thnuncq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe" C:\Windows\SysWOW64\thnuncq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create thnuncq binPath= "C:\Windows\SysWOW64\thnuncq\tbquhfoo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description thnuncq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start thnuncq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- 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:4828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 1096
  2⤵
  - Program crash
  PID:4792

C:\Windows\SysWOW64\thnuncq\tbquhfoo.exe
C:\Windows\SysWOW64\thnuncq\tbquhfoo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-09_b5227c2ef7f856154498e53b41fdce92_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 528
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3916 -ip 3916
1⤵
PID:2820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2812 -ip 2812
1⤵
PID:636

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY0MzMiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODc1OTU2NTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDQxMjk5Nzk3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1124

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe

Filesize
11.8MB

MD5
e4ca60d23ab404d83cbf5be75e2f5a94

SHA1
0292d8f964e4bbb3fd78dceb420e1a99fccc6a9a

SHA256
10c1718e3ed3ac008ebcdb1e217727133dea14e06cbe04087615c8eff6b08f60

SHA512
5c80007a5cb1bb3f70576f4f1225aebf3dbddbbc0fbe25d9550e1ddf219a133e0e759c37012f2e3eff851b2ca9baab280f4fd27c67d8429823d5557f6753b51a

Download Submit
memory/2812-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2812-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2812-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2812-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3916-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3916-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/3916-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/3916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3916-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/3916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3944-16-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/3944-17-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/3944-14-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads