tofsee | bdc9e29f60050c116a263f1b183fd1f15c268e21a29ab43546cc9d1e40e66ab3

General

Target

2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe
Size

11.0MB
MD5

08074404f8b31d0e87a7463ad0b8971d
SHA1

6233da81ed9883318a02d5a87fcfcf52e3617cd9
SHA256

bdc9e29f60050c116a263f1b183fd1f15c268e21a29ab43546cc9d1e40e66ab3
SHA512

c02e3363a74a8bee633135005208305c6140b71d5a6f2994f408c80e840ce277a47d6df4de42b2a82dd235c4a4cf6fa7716e52e32ef9796c5d7e8ccb23dabbb8
SSDEEP

24576:L6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ4:GWdLQk

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
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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3012	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\fxlqqwya\ImagePath = "C:\\Windows\\SysWOW64\\fxlqqwya\\toskalnl.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe

Deletes itself 1 IoCs

pid	Process
3488	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
940	toskalnl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 940 set thread context of 3488	940	toskalnl.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2164	sc.exe
3816	sc.exe
5048	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
4796	4856	WerFault.exe	84
4920	940	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	toskalnl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 2784	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 4856 wrote to memory of 2784	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 4856 wrote to memory of 2784	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 4856 wrote to memory of 4900	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 4856 wrote to memory of 4900	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 4856 wrote to memory of 4900	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 4856 wrote to memory of 2164	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 4856 wrote to memory of 2164	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 4856 wrote to memory of 2164	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 4856 wrote to memory of 3816	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	92
PID 4856 wrote to memory of 3816	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	92
PID 4856 wrote to memory of 3816	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	92
PID 4856 wrote to memory of 5048	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	94
PID 4856 wrote to memory of 5048	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	94
PID 4856 wrote to memory of 5048	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	94
PID 4856 wrote to memory of 3012	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	97
PID 4856 wrote to memory of 3012	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	97
PID 4856 wrote to memory of 3012	4856	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	97
PID 940 wrote to memory of 3488	940	toskalnl.exe	105
PID 940 wrote to memory of 3488	940	toskalnl.exe	105
PID 940 wrote to memory of 3488	940	toskalnl.exe	105
PID 940 wrote to memory of 3488	940	toskalnl.exe	105
PID 940 wrote to memory of 3488	940	toskalnl.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fxlqqwya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\toskalnl.exe" C:\Windows\SysWOW64\fxlqqwya\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fxlqqwya binPath= "C:\Windows\SysWOW64\fxlqqwya\toskalnl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fxlqqwya "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fxlqqwya
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5048
- 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:3012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 656
  2⤵
  - Program crash
  PID:4796

C:\Windows\SysWOW64\fxlqqwya\toskalnl.exe
C:\Windows\SysWOW64\fxlqqwya\toskalnl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:940
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 940 -s 560
  2⤵
  - Program crash
  PID:4920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4856 -ip 4856
1⤵
PID:4744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 940 -ip 940
1⤵
PID:1168

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\toskalnl.exe

Filesize
10.8MB

MD5
85c517aa26ae261e0416aa212d501670

SHA1
7e52731c6652e1fcb304a5c981e4f3775d3056e4

SHA256
86f3f3661816c909735eea15dbdccedf24437a16f1a6b7d2a0fde4eaf1e7e52a

SHA512
51f040c4c8adb908d7001a2b7523074d58e6e980f2ad6703cd424b5c21f0cd604d733790b4feae07946b72092565e69031d78265cfca1fa3962f28796f6ebc83

Download Submit
memory/940-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/940-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/940-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/940-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3488-14-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3488-16-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3488-17-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/4856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4856-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4856-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4856-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4856-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4856-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads