tofsee | 30ecd6f613c2259348422d6167f34c01a5374d978d512b84f2a64e94d1b10d8e

Analysis

max time kernel
142s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 19:26

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General

Target

2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe
Size

14.5MB
MD5

0e117629bea7310213e5299e6d8522f7
SHA1

3d7d2008bd81f8714c1af2954ac7586e0fb87023
SHA256

30ecd6f613c2259348422d6167f34c01a5374d978d512b84f2a64e94d1b10d8e
SHA512

b136cba73db8d878ee01528117519371d55c284e592d025f6b3e05b8589fa2e5ba9568d8711fc28182c4575b23629470eeee4143b9edd385dc77f93a13f53a69
SSDEEP

24576:bpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:too

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\opffzoif = "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
2716	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\opffzoif\ImagePath = "C:\\Windows\\SysWOW64\\opffzoif\\izvctswa.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	izvctswa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2568	2832	izvctswa.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
344	sc.exe
2488	sc.exe
2792	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_0e117629bea7310213e5299e6d8522f7_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	izvctswa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 1724	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	30
PID 2084 wrote to memory of 1724	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	30
PID 2084 wrote to memory of 1724	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	30
PID 2084 wrote to memory of 1724	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	30
PID 2084 wrote to memory of 2412	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	32
PID 2084 wrote to memory of 2412	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	32
PID 2084 wrote to memory of 2412	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	32
PID 2084 wrote to memory of 2412	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	32
PID 2084 wrote to memory of 344	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	34
PID 2084 wrote to memory of 344	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	34
PID 2084 wrote to memory of 344	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	34
PID 2084 wrote to memory of 344	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	34
PID 2084 wrote to memory of 2488	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	36
PID 2084 wrote to memory of 2488	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	36
PID 2084 wrote to memory of 2488	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	36
PID 2084 wrote to memory of 2488	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	36
PID 2084 wrote to memory of 2792	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	38
PID 2084 wrote to memory of 2792	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	38
PID 2084 wrote to memory of 2792	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	38
PID 2084 wrote to memory of 2792	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	38
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2832 wrote to memory of 2568	2832	izvctswa.exe	41
PID 2084 wrote to memory of 2716	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	42
PID 2084 wrote to memory of 2716	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	42
PID 2084 wrote to memory of 2716	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	42
PID 2084 wrote to memory of 2716	2084	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\opffzoif\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\izvctswa.exe" C:\Windows\SysWOW64\opffzoif\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create opffzoif binPath= "C:\Windows\SysWOW64\opffzoif\izvctswa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description opffzoif "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start opffzoif
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- 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:2716

C:\Windows\SysWOW64\opffzoif\izvctswa.exe
C:\Windows\SysWOW64\opffzoif\izvctswa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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:2568

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\izvctswa.exe

Filesize
13.9MB

MD5
c48cf05b22aab83743269bcc5c5ede01

SHA1
d68d3639886a83a95991cf65d024826d83c17829

SHA256
327f9c7ec793aeb477c8771bf7d83e43f405300b2bb70da7518028bdcd04493d

SHA512
0d2ef19a11d8331c5f91de18949f9f1f5a1e068d3b44c540c299a47a1159d6884c2494e177593830b09b896ac451cf70873e861f3c691546b0cd67d7cf6e691e

Download Submit
memory/2084-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2084-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2084-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2084-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2568-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2568-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2568-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2568-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2568-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2832-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads