tofsee | bb320fd8ce9b6b27201b8065281e0ad329e88519675ea7b7601cc64c5ce1c169

General

Target

2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe
Size

11.2MB
MD5

3d142e9d5a6433822df80d30a7a57357
SHA1

b6934545343f53c081d191a903db1f4809f03ade
SHA256

bb320fd8ce9b6b27201b8065281e0ad329e88519675ea7b7601cc64c5ce1c169
SHA512

9e58263c33e372760fd542e75c0bbddd7c1c5463dd03f820e8a3708946cf033d2a359faff69b13d106a5a7959cd376af8ce7ae6b5e76b0d46c99ec3f55d46461
SSDEEP

12288:AVbj7zJB99tzBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBZ:AJzXd

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\wvlnlxct = "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

2840 netsh.exe

pid	process
2840	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\wvlnlxct\ImagePath = "C:\\Windows\\SysWOW64\\wvlnlxct\\tbquhfoo.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2160 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tbquhfoo.exe

pid process

2012 tbquhfoo.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tbquhfoo.exe

description pid process target process

PID 2012 set thread context of 2160 2012 tbquhfoo.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

2392 sc.exe
2204 sc.exe
2168 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2160	svchost.exe

pid	process
2012	tbquhfoo.exe

description	pid	process	target process
PID 2012 set thread context of 2160	2012	tbquhfoo.exe	svchost.exe

pid	process
2392	sc.exe
2204	sc.exe
2168	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.exenetsh.exetbquhfoo.exesvchost.execmd.execmd.exesc.exesc.exe2024-09-21_3d142e9d5a6433822df80d30a7a57357_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tbquhfoo.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	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	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exetbquhfoo.exe

description	pid	process	target process
PID 1856 wrote to memory of 2072	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2072	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2072	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2072	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2404	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2404	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2404	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2404	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	cmd.exe
PID 1856 wrote to memory of 2392	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2392	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2392	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2392	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2204	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2204	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2204	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2204	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2168	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2168	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2168	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2168	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	sc.exe
PID 1856 wrote to memory of 2840	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	netsh.exe
PID 1856 wrote to memory of 2840	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	netsh.exe
PID 1856 wrote to memory of 2840	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	netsh.exe
PID 1856 wrote to memory of 2840	1856	2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe	netsh.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe
PID 2012 wrote to memory of 2160	2012	tbquhfoo.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wvlnlxct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe" C:\Windows\SysWOW64\wvlnlxct\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wvlnlxct binPath= "C:\Windows\SysWOW64\wvlnlxct\tbquhfoo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wvlnlxct "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wvlnlxct
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2168
- 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:2840

C:\Windows\SysWOW64\wvlnlxct\tbquhfoo.exe
C:\Windows\SysWOW64\wvlnlxct\tbquhfoo.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-21_3d142e9d5a6433822df80d30a7a57357_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2012
- 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:2160

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

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Downloads

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

Filesize
10.1MB

MD5
23419ac6611a9196d0312ef89a985170

SHA1
fbdf60dec47c5fc716f5873bc24dbafe6da3f66a

SHA256
cf3d06eae2fd4fa66752fc91ab8bae6baa495c6074a2f051b0eeb0eedf0a797b

SHA512
0967196e470611fdb1898ddd00bf808cb40cece4a128168cd329ddba200e1740109f11af5c91ef32fc26fa6af7fc0590afb238bc1101b4c71c496334cc5bee3c

Download Submit
memory/1856-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1856-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1856-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1856-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1856-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2012-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2160-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2160-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2160-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2160-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2160-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads