tofsee | c1048cd43182a46e41b0839b55e03ba85b0945f974d5b9b1a606172f3d3bad5d

Analysis

max time kernel
143s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 16:35

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General

Target

2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe
Size

13.2MB
MD5

21b4465219a1a154003bb8b84360333d
SHA1

444742300be0feace5aeedec675d3a551cfa4f6a
SHA256

c1048cd43182a46e41b0839b55e03ba85b0945f974d5b9b1a606172f3d3bad5d
SHA512

64615c3b1d61f18059b3b579d4320d427e912eba10a3d05992b5610135078707353bd3200f2c8f99f18e2b3d169c0d6235948456437d46541ecd34c11aba0c8c
SSDEEP

24576:YpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:0oo

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\yycvpfnn = "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
2468	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\yycvpfnn\ImagePath = "C:\\Windows\\SysWOW64\\yycvpfnn\\kpzuoaxz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2488	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	kpzuoaxz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2488	2548	kpzuoaxz.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2440	sc.exe
2728	sc.exe
2556	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	2025-01-11_21b4465219a1a154003bb8b84360333d_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	kpzuoaxz.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2540	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	29
PID 2908 wrote to memory of 2540	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	29
PID 2908 wrote to memory of 2540	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	29
PID 2908 wrote to memory of 2540	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	29
PID 2908 wrote to memory of 2668	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	31
PID 2908 wrote to memory of 2668	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	31
PID 2908 wrote to memory of 2668	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	31
PID 2908 wrote to memory of 2668	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	31
PID 2908 wrote to memory of 2556	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	33
PID 2908 wrote to memory of 2556	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	33
PID 2908 wrote to memory of 2556	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	33
PID 2908 wrote to memory of 2556	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	33
PID 2908 wrote to memory of 2728	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	35
PID 2908 wrote to memory of 2728	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	35
PID 2908 wrote to memory of 2728	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	35
PID 2908 wrote to memory of 2728	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	35
PID 2908 wrote to memory of 2440	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	37
PID 2908 wrote to memory of 2440	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	37
PID 2908 wrote to memory of 2440	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	37
PID 2908 wrote to memory of 2440	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	37
PID 2908 wrote to memory of 2468	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	40
PID 2908 wrote to memory of 2468	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	40
PID 2908 wrote to memory of 2468	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	40
PID 2908 wrote to memory of 2468	2908	2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe	40
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42
PID 2548 wrote to memory of 2488	2548	kpzuoaxz.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yycvpfnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kpzuoaxz.exe" C:\Windows\SysWOW64\yycvpfnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yycvpfnn binPath= "C:\Windows\SysWOW64\yycvpfnn\kpzuoaxz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yycvpfnn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yycvpfnn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2440
- 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:2468

C:\Windows\SysWOW64\yycvpfnn\kpzuoaxz.exe
C:\Windows\SysWOW64\yycvpfnn\kpzuoaxz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-11_21b4465219a1a154003bb8b84360333d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- 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:2488

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:\Windows\SysWOW64\yycvpfnn\kpzuoaxz.exe

Filesize
12.0MB

MD5
17c26730f70878aa827486e07850c524

SHA1
b566376b5fab0bd39e65a33733a08e2b3c666422

SHA256
5bf722d1c2d83222674eeea55bddbca2d61072e7d05a8733d3759ac3ccc88c34

SHA512
ff5c193a13aa0e436ecaaa4a87501eb2908ab71091170ccec404d5c7bc0b3c0f1858b3e28dbfda2fab3a505ab1a8b60dae86d39cfbeb963b0c0f99a500ba2ada

Download Submit
memory/2488-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2488-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2488-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2488-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2488-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2548-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2908-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2908-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2908-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2908-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2908-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/2908-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads