tofsee | f954da5648966e7534005b93d35de289192a6cc3e8f4e765b7de80bc2675c6d8

General

Target

2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe
Size

10.0MB
MD5

dc0400cc759c1d5f7ca5c11b9edda600
SHA1

fff821ce69dd9ae482131d85e4bb6e218eb40435
SHA256

f954da5648966e7534005b93d35de289192a6cc3e8f4e765b7de80bc2675c6d8
SHA512

6fecf099f5aa85ea2d5dcd7cd3ae152261a5c20e02d71fc4ee43675f04286919f865c5ea7f3b66d8b005de8ef1843c80d6c278e116b5161a052b3537ec9a4162
SSDEEP

24576:h6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQf:IWdLQk

Score

10^/10

tofsee defense_evasion discovery 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
Tofsee family
tofsee
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
684	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\vvestugk\ImagePath = "C:\\Windows\\SysWOW64\\vvestugk\\svbvkvgm.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe

Deletes itself 1 IoCs

pid	Process
1736	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4004	svbvkvgm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4004 set thread context of 1736	4004	svbvkvgm.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4504	sc.exe
3180	sc.exe
2896	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1376	3948	WerFault.exe	82
2096	4004	WerFault.exe	96

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svbvkvgm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 4968	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	86
PID 3948 wrote to memory of 4968	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	86
PID 3948 wrote to memory of 4968	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	86
PID 3948 wrote to memory of 1996	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	88
PID 3948 wrote to memory of 1996	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	88
PID 3948 wrote to memory of 1996	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	88
PID 3948 wrote to memory of 4504	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	90
PID 3948 wrote to memory of 4504	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	90
PID 3948 wrote to memory of 4504	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	90
PID 3948 wrote to memory of 3180	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	92
PID 3948 wrote to memory of 3180	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	92
PID 3948 wrote to memory of 3180	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	92
PID 3948 wrote to memory of 2896	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	94
PID 3948 wrote to memory of 2896	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	94
PID 3948 wrote to memory of 2896	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	94
PID 3948 wrote to memory of 684	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	97
PID 3948 wrote to memory of 684	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	97
PID 3948 wrote to memory of 684	3948	2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe	97
PID 4004 wrote to memory of 1736	4004	svbvkvgm.exe	102
PID 4004 wrote to memory of 1736	4004	svbvkvgm.exe	102
PID 4004 wrote to memory of 1736	4004	svbvkvgm.exe	102
PID 4004 wrote to memory of 1736	4004	svbvkvgm.exe	102
PID 4004 wrote to memory of 1736	4004	svbvkvgm.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vvestugk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\svbvkvgm.exe" C:\Windows\SysWOW64\vvestugk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vvestugk binPath= "C:\Windows\SysWOW64\vvestugk\svbvkvgm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vvestugk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vvestugk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 1028
  2⤵
  - Program crash
  PID:1376

C:\Windows\SysWOW64\vvestugk\svbvkvgm.exe
C:\Windows\SysWOW64\vvestugk\svbvkvgm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_dc0400cc759c1d5f7ca5c11b9edda600_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4004
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 512
  2⤵
  - Program crash
  PID:2096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3948 -ip 3948
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4004 -ip 4004
1⤵
PID:2972

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

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\svbvkvgm.exe

Filesize
12.1MB

MD5
7c5afd1418006aaace78a120b85ee2aa

SHA1
cb35fc43607770ed7c9a7c6336c45ac0a342d395

SHA256
ea20ceda9770933fb6d949ac8a5bc266f3866ff66f73c9a58682bb8360da448e

SHA512
8cab5ae32ec35d46d5be1daa01d3f8658d498077526447d314d57db6003c7fe2dc149f90bf2896a3641bdcadfb28de6dd8c4c22a72b90e497f6d44660fb7f324

Download Submit
memory/1736-14-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download
memory/1736-16-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download
memory/1736-17-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download
memory/3948-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3948-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3948-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3948-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3948-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3948-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/4004-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4004-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4004-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4004-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads