tofsee | 150521375c727ba9d9bba4e7dec6247c40807028436ec465d95ba8569fb4c234

General

Target

2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe
Size

10.7MB
MD5

52b91309c66d80cd8a82bb089b0e8de2
SHA1

80738496505450e702a421eff90b9acb1e5f13dc
SHA256

150521375c727ba9d9bba4e7dec6247c40807028436ec465d95ba8569fb4c234
SHA512

7ce8505253a5b17258fd6ce515297769173019e75e29015b4fcbb107c48a742bbd3acc4faa78c6a3d9c54087074be24ca3e969b0752767331bbee63327996895
SSDEEP

24576:oEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZf:lfot

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
2036	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\yovrzhd\ImagePath = "C:\\Windows\\SysWOW64\\yovrzhd\\lffwhqhj.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe

Deletes itself 1 IoCs

pid	Process
856	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
540	lffwhqhj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 540 set thread context of 856	540	lffwhqhj.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4472	sc.exe
1972	sc.exe
4440	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
2292	3744	WerFault.exe	82
1172	540	WerFault.exe	94

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lffwhqhj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3744 wrote to memory of 1560	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	84
PID 3744 wrote to memory of 1560	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	84
PID 3744 wrote to memory of 1560	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	84
PID 3744 wrote to memory of 1996	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	86
PID 3744 wrote to memory of 1996	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	86
PID 3744 wrote to memory of 1996	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	86
PID 3744 wrote to memory of 1972	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	88
PID 3744 wrote to memory of 1972	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	88
PID 3744 wrote to memory of 1972	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	88
PID 3744 wrote to memory of 4440	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	90
PID 3744 wrote to memory of 4440	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	90
PID 3744 wrote to memory of 4440	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	90
PID 3744 wrote to memory of 4472	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	92
PID 3744 wrote to memory of 4472	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	92
PID 3744 wrote to memory of 4472	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	92
PID 3744 wrote to memory of 2036	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	95
PID 3744 wrote to memory of 2036	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	95
PID 3744 wrote to memory of 2036	3744	2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe	95
PID 540 wrote to memory of 856	540	lffwhqhj.exe	101
PID 540 wrote to memory of 856	540	lffwhqhj.exe	101
PID 540 wrote to memory of 856	540	lffwhqhj.exe	101
PID 540 wrote to memory of 856	540	lffwhqhj.exe	101
PID 540 wrote to memory of 856	540	lffwhqhj.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yovrzhd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lffwhqhj.exe" C:\Windows\SysWOW64\yovrzhd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yovrzhd binPath= "C:\Windows\SysWOW64\yovrzhd\lffwhqhj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yovrzhd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yovrzhd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- 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:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 1348
  2⤵
  - Program crash
  PID:2292

C:\Windows\SysWOW64\yovrzhd\lffwhqhj.exe
C:\Windows\SysWOW64\yovrzhd\lffwhqhj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_52b91309c66d80cd8a82bb089b0e8de2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 512
  2⤵
  - Program crash
  PID:1172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3744 -ip 3744
1⤵
PID:1680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 540 -ip 540
1⤵
PID:2256

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\lffwhqhj.exe

Filesize
11.7MB

MD5
45c1e3a7df464d3401b796e2b5f6bc98

SHA1
9505a3f4251be61b04b0a8d3d45f175c45b52e02

SHA256
abd135dfd6a12a4223e7490f7914e05706d4b0bbd054b3a15b8f79cd999d1dfb

SHA512
b1bda70a8bd30713d4e4aee2e7160b28c0401fa7d27a36b85bd874e3f06f7246af7ddb2ce9155fd6cd640930e6fe49fb6606ac813b5c5a265bbe170c2e471d3e

Download Submit
memory/540-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/540-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/540-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/540-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/856-14-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/856-16-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/856-17-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/3744-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3744-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/3744-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3744-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/3744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3744-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads