tofsee | 04c02e1bad094a8550bc89757909de4b2c4fadafc9218a1e4dbb61e746da5f4c

General

Target

2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe
Size

13.8MB
MD5

229c6f75aab2806898846d4355402070
SHA1

347aab145595d8724c067b527adb9da1509a1dea
SHA256

04c02e1bad094a8550bc89757909de4b2c4fadafc9218a1e4dbb61e746da5f4c
SHA512

7f86781506b5033dd12145e38ca0112be03c75c7ab5754291ab5294c14ba2527893da6e6f699a4d5eddc86f4ca4a97849536c679602f9708eb1c7f97f70154f0
SSDEEP

24576:LEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ/:Yfot5

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
62	2820	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
212	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\fyfrgvd\ImagePath = "C:\\Windows\\SysWOW64\\fyfrgvd\\jddufofh.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-1-5-21-1318997816-2171176372-1451785247-1000\Control Panel\International\Geo\Nation	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe

Deletes itself 1 IoCs

pid	Process
1416	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2192	jddufofh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2192 set thread context of 1416	2192	jddufofh.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
2504	sc.exe
756	sc.exe
4232	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
1192	4412	WerFault.exe	87
2612	2192	WerFault.exe	98

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	jddufofh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-13_229c6f75aab2806898846d4355402070_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	MicrosoftEdgeUpdate.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
3400	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4412 wrote to memory of 940	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	88
PID 4412 wrote to memory of 940	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	88
PID 4412 wrote to memory of 940	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	88
PID 4412 wrote to memory of 4784	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	90
PID 4412 wrote to memory of 4784	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	90
PID 4412 wrote to memory of 4784	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	90
PID 4412 wrote to memory of 2504	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	92
PID 4412 wrote to memory of 2504	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	92
PID 4412 wrote to memory of 2504	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	92
PID 4412 wrote to memory of 756	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	94
PID 4412 wrote to memory of 756	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	94
PID 4412 wrote to memory of 756	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	94
PID 4412 wrote to memory of 4232	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	96
PID 4412 wrote to memory of 4232	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	96
PID 4412 wrote to memory of 4232	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	96
PID 4412 wrote to memory of 212	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	99
PID 4412 wrote to memory of 212	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	99
PID 4412 wrote to memory of 212	4412	2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe	99
PID 2192 wrote to memory of 1416	2192	jddufofh.exe	104
PID 2192 wrote to memory of 1416	2192	jddufofh.exe	104
PID 2192 wrote to memory of 1416	2192	jddufofh.exe	104
PID 2192 wrote to memory of 1416	2192	jddufofh.exe	104
PID 2192 wrote to memory of 1416	2192	jddufofh.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fyfrgvd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jddufofh.exe" C:\Windows\SysWOW64\fyfrgvd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fyfrgvd binPath= "C:\Windows\SysWOW64\fyfrgvd\jddufofh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fyfrgvd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fyfrgvd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4232
- 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:212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4412 -s 892
  2⤵
  - Program crash
  PID:1192

C:\Windows\SysWOW64\fyfrgvd\jddufofh.exe
C:\Windows\SysWOW64\fyfrgvd\jddufofh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-13_229c6f75aab2806898846d4355402070_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 560
  2⤵
  - Program crash
  PID:2612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4412 -ip 4412
1⤵
PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2192 -ip 2192
1⤵
PID:4016

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1ODM1MDE5OTg5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3400

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\jddufofh.exe

Filesize
11.9MB

MD5
d44758ae917abb5d1784e97ff5cf7f70

SHA1
304fb319ea96520c645fccd44e3251a61481567a

SHA256
321e783b1a21a18ed85a0c8b16393f668ec9d57b7f7519b005742f9efa173251

SHA512
f947776f16e31eec3e53e41fded2534a06aaea9c602e83d8bbb5b381af68f7de724e44d20a2b4506bed34d25a80a581bbd6ceb712835ec9fa67d79baa24ae680

Download Submit
memory/1416-14-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1416-17-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1416-16-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/2192-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2192-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2192-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2192-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4412-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4412-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4412-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/4412-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4412-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads