tofsee | 6b62d421c0993ea2c1d4213c5fa44f08e381642fed36603a6fc8efafec955de3

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 19:43

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General

Target

2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe
Size

12.5MB
MD5

985d5a3c0a38f3438ecf1ee322381de5
SHA1

e1abddfb5e5550bc28d529a5ef293a575fb362a2
SHA256

6b62d421c0993ea2c1d4213c5fa44f08e381642fed36603a6fc8efafec955de3
SHA512

2b81be138cfe0501d45d7a7a5c1ee710971483e413ba41df5ea5f1d28b861cb0a722b47ee55feb04d1660f6888675008019379b56a0006ec66f395da6f29c850
SSDEEP

24576:dpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttV:3oo

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\uxyfnkj = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2852	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\uxyfnkj\ImagePath = "C:\\Windows\\SysWOW64\\uxyfnkj\\llmxstrz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	llmxstrz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2744	2792	llmxstrz.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2728	sc.exe
2140	sc.exe
1840	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	llmxstrz.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2060	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	30
PID 2120 wrote to memory of 2060	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	30
PID 2120 wrote to memory of 2060	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	30
PID 2120 wrote to memory of 2060	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	30
PID 2120 wrote to memory of 2316	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	32
PID 2120 wrote to memory of 2316	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	32
PID 2120 wrote to memory of 2316	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	32
PID 2120 wrote to memory of 2316	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	32
PID 2120 wrote to memory of 2140	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	34
PID 2120 wrote to memory of 2140	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	34
PID 2120 wrote to memory of 2140	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	34
PID 2120 wrote to memory of 2140	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	34
PID 2120 wrote to memory of 1840	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	36
PID 2120 wrote to memory of 1840	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	36
PID 2120 wrote to memory of 1840	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	36
PID 2120 wrote to memory of 1840	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	36
PID 2120 wrote to memory of 2728	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	38
PID 2120 wrote to memory of 2728	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	38
PID 2120 wrote to memory of 2728	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	38
PID 2120 wrote to memory of 2728	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	38
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2792 wrote to memory of 2744	2792	llmxstrz.exe	41
PID 2120 wrote to memory of 2852	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	42
PID 2120 wrote to memory of 2852	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	42
PID 2120 wrote to memory of 2852	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	42
PID 2120 wrote to memory of 2852	2120	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uxyfnkj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\llmxstrz.exe" C:\Windows\SysWOW64\uxyfnkj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uxyfnkj binPath= "C:\Windows\SysWOW64\uxyfnkj\llmxstrz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uxyfnkj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uxyfnkj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- 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:2852

C:\Windows\SysWOW64\uxyfnkj\llmxstrz.exe
C:\Windows\SysWOW64\uxyfnkj\llmxstrz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- 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:2744

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
13.0MB

MD5
9c03521265d22aa9f8a41bf33e1339b2

SHA1
b8a211db8341298de1344d0023e4fcf1b1df885a

SHA256
09704cf5ffab85cb2de1a28165a0874af610c05bb796d22ca5ca4901783ba678

SHA512
d1ce6877f2cfa5ca2115c3c183188ed3014e193933c546ade40edb0d148bd6038de6fc3669333d069ce14e297da1838c3af146c7eb5a1bf76f6990333abb879f

Download Submit
memory/2120-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2120-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2120-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2120-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2744-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2792-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads