tofsee | d9f1aa065d50a3ce0aaaeacd90d5c48243b29cab3868d902bce958d4bce4c1bf

Analysis

max time kernel
143s
max time network
128s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
28-01-2025 05:29

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General

Target

2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe
Size

12.6MB
MD5

e18363c0288a27da1ef9a3160cd13647
SHA1

1f474ef7b436f090c4d150e81d6c8b4864322352
SHA256

d9f1aa065d50a3ce0aaaeacd90d5c48243b29cab3868d902bce958d4bce4c1bf
SHA512

732863405b5bcdc89d03f299dbf6e90a8dbbdc486b583e48a582d33500c1cdf8a29f043c0aef0feeeec37ea1b12c207d4526ea2ff88da64da14d1884345b282b
SSDEEP

49152:nqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:nqtYc3

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\tnvmxlmm = "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
2176	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\tnvmxlmm\ImagePath = "C:\\Windows\\SysWOW64\\tnvmxlmm\\vmuscxes.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2920	vmuscxes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2920 set thread context of 2796	2920	vmuscxes.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2884	sc.exe
2736	sc.exe
2100	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	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vmuscxes.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2568	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	29
PID 2264 wrote to memory of 2568	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	29
PID 2264 wrote to memory of 2568	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	29
PID 2264 wrote to memory of 2568	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	29
PID 2264 wrote to memory of 2548	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	31
PID 2264 wrote to memory of 2548	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	31
PID 2264 wrote to memory of 2548	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	31
PID 2264 wrote to memory of 2548	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	31
PID 2264 wrote to memory of 2100	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	33
PID 2264 wrote to memory of 2100	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	33
PID 2264 wrote to memory of 2100	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	33
PID 2264 wrote to memory of 2100	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	33
PID 2264 wrote to memory of 2884	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	35
PID 2264 wrote to memory of 2884	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	35
PID 2264 wrote to memory of 2884	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	35
PID 2264 wrote to memory of 2884	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	35
PID 2264 wrote to memory of 2736	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	37
PID 2264 wrote to memory of 2736	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	37
PID 2264 wrote to memory of 2736	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	37
PID 2264 wrote to memory of 2736	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	37
PID 2264 wrote to memory of 2176	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	40
PID 2264 wrote to memory of 2176	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	40
PID 2264 wrote to memory of 2176	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	40
PID 2264 wrote to memory of 2176	2264	2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe	40
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42
PID 2920 wrote to memory of 2796	2920	vmuscxes.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tnvmxlmm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vmuscxes.exe" C:\Windows\SysWOW64\tnvmxlmm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tnvmxlmm binPath= "C:\Windows\SysWOW64\tnvmxlmm\vmuscxes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tnvmxlmm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tnvmxlmm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- 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:2176

C:\Windows\SysWOW64\tnvmxlmm\vmuscxes.exe
C:\Windows\SysWOW64\tnvmxlmm\vmuscxes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_e18363c0288a27da1ef9a3160cd13647_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2920
- 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:2796

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\vmuscxes.exe

Filesize
14.1MB

MD5
36f9f3c9ca50f2dcf8423c78794f20ef

SHA1
6b3f0bcc14017ef30e2c1cfa5a5b1eaa5678339a

SHA256
1543a45035bb1d16551be49a0352aa0a6f3afe3210121b1c1a292526a6376341

SHA512
48515a3cfebbfe7f889231a561a75118df4fe875463ca720447ecfc1c980c971e3e7888bbaa915bf601c04f8782dee7ddf8b71d4d040d6afe12dc31dabf88a58

Download Submit
memory/2264-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2264-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2264-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2264-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2796-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2920-15-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads