tofsee | d17c61ddf9e340d1c5f213aa1fa64950b786036e143c2d098020c16a49d5d12f

General

Target

2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe
Size

10.2MB
MD5

f3d769498f02e8f68fb85444b4893068
SHA1

39bc846e09c574a21dc5809a3a78a6232f1ef96d
SHA256

d17c61ddf9e340d1c5f213aa1fa64950b786036e143c2d098020c16a49d5d12f
SHA512

43fe0ec173e671bdf992f56775b4c39988a26c76dd7f545f87b4567212437a1cbdf306800bb585626dd319c7bc6ef38e3e7a900480796f0b95284c3031a0eb9f
SSDEEP

24576:xEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZx:Kfot

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
3836	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\ubpdzops\ImagePath = "C:\\Windows\\SysWOW64\\ubpdzops\\fsebuhmw.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe

Deletes itself 1 IoCs

pid	Process
4584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
224	fsebuhmw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 4584	224	fsebuhmw.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2552	sc.exe
1288	sc.exe
4280	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2716	3984	WerFault.exe	82
1660	224	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-18_f3d769498f02e8f68fb85444b4893068_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fsebuhmw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 736	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	84
PID 3984 wrote to memory of 736	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	84
PID 3984 wrote to memory of 736	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	84
PID 3984 wrote to memory of 4872	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	86
PID 3984 wrote to memory of 4872	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	86
PID 3984 wrote to memory of 4872	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	86
PID 3984 wrote to memory of 4280	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	88
PID 3984 wrote to memory of 4280	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	88
PID 3984 wrote to memory of 4280	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	88
PID 3984 wrote to memory of 2552	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	90
PID 3984 wrote to memory of 2552	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	90
PID 3984 wrote to memory of 2552	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	90
PID 3984 wrote to memory of 1288	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	92
PID 3984 wrote to memory of 1288	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	92
PID 3984 wrote to memory of 1288	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	92
PID 3984 wrote to memory of 3836	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	95
PID 3984 wrote to memory of 3836	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	95
PID 3984 wrote to memory of 3836	3984	2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe	95
PID 224 wrote to memory of 4584	224	fsebuhmw.exe	101
PID 224 wrote to memory of 4584	224	fsebuhmw.exe	101
PID 224 wrote to memory of 4584	224	fsebuhmw.exe	101
PID 224 wrote to memory of 4584	224	fsebuhmw.exe	101
PID 224 wrote to memory of 4584	224	fsebuhmw.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ubpdzops\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fsebuhmw.exe" C:\Windows\SysWOW64\ubpdzops\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ubpdzops binPath= "C:\Windows\SysWOW64\ubpdzops\fsebuhmw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ubpdzops "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ubpdzops
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1288
- 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:3836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 1036
  2⤵
  - Program crash
  PID:2716

C:\Windows\SysWOW64\ubpdzops\fsebuhmw.exe
C:\Windows\SysWOW64\ubpdzops\fsebuhmw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-18_f3d769498f02e8f68fb85444b4893068_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 516
  2⤵
  - Program crash
  PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3984 -ip 3984
1⤵
PID:2440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 224 -ip 224
1⤵
PID:3044

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\fsebuhmw.exe

Filesize
14.7MB

MD5
3bc1c94b9caf87fa2015479057836ce5

SHA1
bb2846c7c6a0e6778947fd578ff55cb18399e35c

SHA256
6d529d893db87047eef05b019c098d255ff1e3ff69d3797d98824ab13fe11289

SHA512
587ce47308499988a752815933beee1dea0917ab534deee83898a84c351262b909d85652772d4df8c2bf40eb94f889596ab611963c3298ae974bd3592d2d2a12

Download Submit
memory/224-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/224-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3984-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3984-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3984-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3984-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3984-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3984-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/4584-14-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/4584-16-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/4584-19-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads