tofsee | 9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e

General

Target

2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe
Size

12.0MB
MD5

55677129c3ec9b078fca74e0042b7667
SHA1

0f316608d3481f66b6be8defcee658022220bb61
SHA256

9242bfe755391afaabf0437648bd1d1219bfe22a3a9cc38aa400b8e586207d8e
SHA512

ce397f4fdc64387094fba86c9a10c487dbf66a88e15e0aaf19cc98eec28f8e8b3b7b0ec2a5816b39f1524609636457a5ab719dfb9affd2904eb317e0eb8d24fe
SSDEEP

6144:c+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:c+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\opzucpwl = "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

Processes:

netsh.exe

pid process

2668 netsh.exe

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

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\opzucpwl\ImagePath = "C:\\Windows\\SysWOW64\\opzucpwl\\ytaxwtpq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2856 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ytaxwtpq.exe

pid process

2660 ytaxwtpq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ytaxwtpq.exe

description pid process target process

PID 2660 set thread context of 2856 2660 ytaxwtpq.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

824 sc.exe
2716 sc.exe
2144 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2856	svchost.exe

pid	process
2660	ytaxwtpq.exe

description	pid	process	target process
PID 2660 set thread context of 2856	2660	ytaxwtpq.exe	svchost.exe

pid	process
824	sc.exe
2716	sc.exe
2144	sc.exe

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

Processes:

netsh.exe

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

Processes:

sc.exesvchost.exesc.execmd.execmd.exesc.exeytaxwtpq.exenetsh.exe2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe

description	ioc	process
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	sc.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	ytaxwtpq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exeytaxwtpq.exe

description	pid	process	target process
PID 1044 wrote to memory of 2880	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 2880	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 2880	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 2880	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 3044	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 3044	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 3044	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 3044	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	cmd.exe
PID 1044 wrote to memory of 824	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 824	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 824	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 824	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2716	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2716	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2716	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2716	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2144	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2144	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2144	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 1044 wrote to memory of 2144	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	sc.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 2660 wrote to memory of 2856	2660	ytaxwtpq.exe	svchost.exe
PID 1044 wrote to memory of 2668	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	netsh.exe
PID 1044 wrote to memory of 2668	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	netsh.exe
PID 1044 wrote to memory of 2668	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	netsh.exe
PID 1044 wrote to memory of 2668	1044	2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\opzucpwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ytaxwtpq.exe" C:\Windows\SysWOW64\opzucpwl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create opzucpwl binPath= "C:\Windows\SysWOW64\opzucpwl\ytaxwtpq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description opzucpwl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start opzucpwl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2144
- 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\opzucpwl\ytaxwtpq.exe
C:\Windows\SysWOW64\opzucpwl\ytaxwtpq.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-21_55677129c3ec9b078fca74e0042b7667_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- 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:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
11.3MB

MD5
83abd34bde95f973a5e3a368df5ce618

SHA1
ed528e1234e4b1615f57f08773be5e221c91bd70

SHA256
ec0640c4286cbdb083993e9c4fa2dcda16d134f0ff417abd5ce5368cc26ba6f0

SHA512
e1e58586844f6781baa8bd1894508e7c2976b3a2d4813cb7fb667eca68681a44e08b69e50a69f7e9cfd6259e554fa9ddaec7237ae6b549221e03a39a28bd77fb

Download Submit
memory/1044-1-0x0000000000960000-0x0000000000A60000-memory.dmp

Filesize
1024KB

Download
memory/1044-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1044-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1044-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2856-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2856-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2856-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2856-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2856-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads