tofsee | 3e5aada8f5df3358d5c2cb958fee146367d0700db8b12405087d796dd82807aa

Analysis

max time kernel
144s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 00:36

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General

Target

2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe
Size

13.7MB
MD5

f8434478e7a61a25faf87ce5d5598b16
SHA1

b394965a56e3a3a18a0f546e9b98fd8100cc924b
SHA256

3e5aada8f5df3358d5c2cb958fee146367d0700db8b12405087d796dd82807aa
SHA512

6062357399739ab3895c0df98f79287c071b0184ea6c1471807393a98cc96b22f5942a95e8052304ef59d62338f553d879b6b030ac060d6533fba2768e77e7a3
SSDEEP

393216:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXP:/

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\bgrttsfa = "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
2564	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\bgrttsfa\ImagePath = "C:\\Windows\\SysWOW64\\bgrttsfa\\vxqbiqeu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2936	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2196	vxqbiqeu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 2936	2196	vxqbiqeu.exe	39

Launches sc.exe 3 IoCs

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

pid	Process
2244	sc.exe
2384	sc.exe
1680	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	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	vxqbiqeu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2284	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	28
PID 2848 wrote to memory of 2284	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	28
PID 2848 wrote to memory of 2284	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	28
PID 2848 wrote to memory of 2284	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	28
PID 2848 wrote to memory of 2320	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	30
PID 2848 wrote to memory of 2320	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	30
PID 2848 wrote to memory of 2320	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	30
PID 2848 wrote to memory of 2320	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	30
PID 2848 wrote to memory of 2244	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	32
PID 2848 wrote to memory of 2244	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	32
PID 2848 wrote to memory of 2244	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	32
PID 2848 wrote to memory of 2244	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	32
PID 2848 wrote to memory of 2384	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	34
PID 2848 wrote to memory of 2384	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	34
PID 2848 wrote to memory of 2384	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	34
PID 2848 wrote to memory of 2384	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	34
PID 2848 wrote to memory of 1680	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	36
PID 2848 wrote to memory of 1680	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	36
PID 2848 wrote to memory of 1680	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	36
PID 2848 wrote to memory of 1680	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	36
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2196 wrote to memory of 2936	2196	vxqbiqeu.exe	39
PID 2848 wrote to memory of 2564	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	40
PID 2848 wrote to memory of 2564	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	40
PID 2848 wrote to memory of 2564	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	40
PID 2848 wrote to memory of 2564	2848	2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe	40

C:\Users\Admin\AppData\Local\Temp\2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bgrttsfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vxqbiqeu.exe" C:\Windows\SysWOW64\bgrttsfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bgrttsfa binPath= "C:\Windows\SysWOW64\bgrttsfa\vxqbiqeu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bgrttsfa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bgrttsfa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1680
- 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:2564

C:\Windows\SysWOW64\bgrttsfa\vxqbiqeu.exe
C:\Windows\SysWOW64\bgrttsfa\vxqbiqeu.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f8434478e7a61a25faf87ce5d5598b16_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2196
- 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:2936

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\vxqbiqeu.exe

Filesize
11.3MB

MD5
8f7ae088f0fe4ad9cc2800b931ea7877

SHA1
853a088cba8a0887e18342b6268a161ed7ac2698

SHA256
a4a5b395cb7b127152dce59b2792fc11593376954b3bdc074b2b0290bebe83c3

SHA512
9ffcd9ca23f0be6ed96cb8fb81350c79f81764244e9b77c8d189600e14498daa7530a4318c7415d536efe45819c28ca039ab2ce9f4d1981e7110d9aba8d9046e

Download Submit
memory/2196-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2848-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2848-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2848-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2848-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-16-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2936-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2936-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads