tofsee | 4f132c042659b37ff3aaf4866e2c62eb014feece0887c8818f5f05c8bcb33f24

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-01-2025 19:05

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General

Target

2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe
Size

12.7MB
MD5

7d495508a5b3f25d13551f894b2eeada
SHA1

68ed778b9b691967ab81634caeb62fce9eda70a1
SHA256

4f132c042659b37ff3aaf4866e2c62eb014feece0887c8818f5f05c8bcb33f24
SHA512

05088855ff1b835c55949d5a511e4a030436d1ea3a87e7ac4c86b1f4a818c58c8f6fe051cc0924bee8451cb11f65a6e0ce8f060c59af01fc68b7feb559b3ac98
SSDEEP

24576:ApomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:Moo

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\wcxswvzl = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2668	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\wcxswvzl\ImagePath = "C:\\Windows\\SysWOW64\\wcxswvzl\\llmxstrz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	llmxstrz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2768 set thread context of 2936	2768	llmxstrz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2728	sc.exe
1744	sc.exe
2732	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

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	llmxstrz.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 1800	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	32
PID 2100 wrote to memory of 1800	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	32
PID 2100 wrote to memory of 1800	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	32
PID 2100 wrote to memory of 1800	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	32
PID 2100 wrote to memory of 276	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	34
PID 2100 wrote to memory of 276	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	34
PID 2100 wrote to memory of 276	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	34
PID 2100 wrote to memory of 276	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	34
PID 2100 wrote to memory of 2728	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	36
PID 2100 wrote to memory of 2728	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	36
PID 2100 wrote to memory of 2728	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	36
PID 2100 wrote to memory of 2728	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	36
PID 2100 wrote to memory of 1744	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	38
PID 2100 wrote to memory of 1744	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	38
PID 2100 wrote to memory of 1744	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	38
PID 2100 wrote to memory of 1744	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	38
PID 2100 wrote to memory of 2732	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	40
PID 2100 wrote to memory of 2732	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	40
PID 2100 wrote to memory of 2732	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	40
PID 2100 wrote to memory of 2732	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	40
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2768 wrote to memory of 2936	2768	llmxstrz.exe	43
PID 2100 wrote to memory of 2668	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	44
PID 2100 wrote to memory of 2668	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	44
PID 2100 wrote to memory of 2668	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	44
PID 2100 wrote to memory of 2668	2100	2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wcxswvzl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\llmxstrz.exe" C:\Windows\SysWOW64\wcxswvzl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wcxswvzl binPath= "C:\Windows\SysWOW64\wcxswvzl\llmxstrz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wcxswvzl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wcxswvzl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- 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:2668

C:\Windows\SysWOW64\wcxswvzl\llmxstrz.exe
C:\Windows\SysWOW64\wcxswvzl\llmxstrz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_7d495508a5b3f25d13551f894b2eeada_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
15.0MB

MD5
a488b636a3ff9e5e05318a22eb9c82d7

SHA1
2547a1ae3efb1af0a61e417973ce58637a5b4b4d

SHA256
57f3876979e199a2571779e2a90aa56a72e9a0e3d1530fbad6a91e516b3f5752

SHA512
bf24fad4de37d0fb6513a4a849841f56fa73be0922a4c27bab3e97c76211f1cbe51a9a4c67f9894abe9a25a4d93f27c8268093b95068fe7a6eb67122ba6c2f5b

Download Submit
memory/2100-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2100-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2100-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2100-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2768-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2936-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads