tofsee | 125855b740b1777ffecc46e376fba8c12e89daa1ac4d4c64c9df5ecc00380b74

Analysis

max time kernel
145s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 18:51

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General

Target

2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe
Size

10.8MB
MD5

bc0920bf926ce5afd4b3bddbe164c661
SHA1

02d2615da6e80b0f12c8f5af0059034365a7e7c6
SHA256

125855b740b1777ffecc46e376fba8c12e89daa1ac4d4c64c9df5ecc00380b74
SHA512

56f38c84ff5439fe5301fcbc934f8a0212bb535b1e6d41d5207a2b7ce18713eda482557cfa3bec79f3ee77a2e3153c946234230070e2fae85d3a9ab67b5877b5
SSDEEP

6144:1LQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQQ:GTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee discovery evasion 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

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\acvtwibq = "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

pid	Process
2968	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\acvtwibq\ImagePath = "C:\\Windows\\SysWOW64\\acvtwibq\\toskalnl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2252	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	toskalnl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2252	2712	toskalnl.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2840	sc.exe
2664	sc.exe
2784	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	toskalnl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2452	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	31
PID 2324 wrote to memory of 2452	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	31
PID 2324 wrote to memory of 2452	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	31
PID 2324 wrote to memory of 2452	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	31
PID 2324 wrote to memory of 2644	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	33
PID 2324 wrote to memory of 2644	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	33
PID 2324 wrote to memory of 2644	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	33
PID 2324 wrote to memory of 2644	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	33
PID 2324 wrote to memory of 2840	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	35
PID 2324 wrote to memory of 2840	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	35
PID 2324 wrote to memory of 2840	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	35
PID 2324 wrote to memory of 2840	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	35
PID 2324 wrote to memory of 2664	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	37
PID 2324 wrote to memory of 2664	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	37
PID 2324 wrote to memory of 2664	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	37
PID 2324 wrote to memory of 2664	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	37
PID 2324 wrote to memory of 2784	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	39
PID 2324 wrote to memory of 2784	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	39
PID 2324 wrote to memory of 2784	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	39
PID 2324 wrote to memory of 2784	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	39
PID 2324 wrote to memory of 2968	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	42
PID 2324 wrote to memory of 2968	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	42
PID 2324 wrote to memory of 2968	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	42
PID 2324 wrote to memory of 2968	2324	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	42
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44
PID 2712 wrote to memory of 2252	2712	toskalnl.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\acvtwibq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\toskalnl.exe" C:\Windows\SysWOW64\acvtwibq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create acvtwibq binPath= "C:\Windows\SysWOW64\acvtwibq\toskalnl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description acvtwibq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start acvtwibq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- 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:2968

C:\Windows\SysWOW64\acvtwibq\toskalnl.exe
C:\Windows\SysWOW64\acvtwibq\toskalnl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712
- 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:2252

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\toskalnl.exe

Filesize
13.1MB

MD5
2f8bde7c494147c4c2fe77429129adf9

SHA1
c66b499690a17d4a33cb988575ec59a0376d0d23

SHA256
f99188ba7e9e347ef35d341da30566484af155ca0e92e6d85853267a7bec1b1d

SHA512
ebbbbff940de6740aee4c27724bd16ea3f999f8e98a22e1b48877d1ccc37699fc1e314eff1270cb95c45ed9fd5483eaf8a6b25a8d055b25e291d4a9feabb220b

Download Submit
memory/2252-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2252-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2252-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2252-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2252-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2324-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2324-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2712-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads