tofsee | 77728ab8b44b23e25a625458f8750a51feb298c7af0bf2c0d619fbd78b56f6f8

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
31-01-2025 19:46

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General

Target

2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe
Size

14.7MB
MD5

047c998fb134b08e332826053fa8640f
SHA1

b69f1fe444fb5c2fd2983c17e91607be66453376
SHA256

77728ab8b44b23e25a625458f8750a51feb298c7af0bf2c0d619fbd78b56f6f8
SHA512

120e7c55a728c4b55689ed8a87ba6f0e1cbc537ba17328481a013284afaae63c6593815ccd9f226723ea5168e0b62bb93270b64de9927e91bcca5a7c869f513f
SSDEEP

393216:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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\kjfwcvch = "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
2544	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\kjfwcvch\ImagePath = "C:\\Windows\\SysWOW64\\kjfwcvch\\xtllixwk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	xtllixwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 3060	2600	xtllixwk.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2792	sc.exe
2968	sc.exe
2748	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	xtllixwk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2812	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	31
PID 2100 wrote to memory of 2812	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	31
PID 2100 wrote to memory of 2812	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	31
PID 2100 wrote to memory of 2812	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	31
PID 2100 wrote to memory of 2672	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	33
PID 2100 wrote to memory of 2672	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	33
PID 2100 wrote to memory of 2672	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	33
PID 2100 wrote to memory of 2672	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	33
PID 2100 wrote to memory of 2792	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	35
PID 2100 wrote to memory of 2792	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	35
PID 2100 wrote to memory of 2792	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	35
PID 2100 wrote to memory of 2792	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	35
PID 2100 wrote to memory of 2968	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	37
PID 2100 wrote to memory of 2968	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	37
PID 2100 wrote to memory of 2968	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	37
PID 2100 wrote to memory of 2968	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	37
PID 2100 wrote to memory of 2748	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	39
PID 2100 wrote to memory of 2748	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	39
PID 2100 wrote to memory of 2748	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	39
PID 2100 wrote to memory of 2748	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	39
PID 2100 wrote to memory of 2544	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	42
PID 2100 wrote to memory of 2544	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	42
PID 2100 wrote to memory of 2544	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	42
PID 2100 wrote to memory of 2544	2100	2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe	42
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44
PID 2600 wrote to memory of 3060	2600	xtllixwk.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kjfwcvch\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe" C:\Windows\SysWOW64\kjfwcvch\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kjfwcvch binPath= "C:\Windows\SysWOW64\kjfwcvch\xtllixwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kjfwcvch "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kjfwcvch
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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:2544

C:\Windows\SysWOW64\kjfwcvch\xtllixwk.exe
C:\Windows\SysWOW64\kjfwcvch\xtllixwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_047c998fb134b08e332826053fa8640f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- 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:3060

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\xtllixwk.exe

Filesize
11.2MB

MD5
c1d6f69e4fa78022c42045a6f3001550

SHA1
cd296fc515b5240b4cb11071f83361d96a3f5307

SHA256
3626eaee562af3a15d42e138da04615d82abf96a13347680a018c434164c8629

SHA512
819e34a0cebef82f80aa556c242cc8d6a0ca8227df4ce42e396bac15c87252fc5ccb383b329e9c9062613d9d94aeea239eb3b5859a7dab8d190b01e0b663b1e7

Download Submit
memory/2100-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2100-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2100-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2600-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3060-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3060-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3060-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3060-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads