tofsee | 15d808778e4fd9319cf62ebb3eb725b8848d4bf314d24d947f0fedf1a19afb19

General

Target

2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe
Size

13.9MB
MD5

bee29004aafc91f6dc983b3395338d49
SHA1

8f0a1937eff8cd116d16147a90cd4df8d7e59746
SHA256

15d808778e4fd9319cf62ebb3eb725b8848d4bf314d24d947f0fedf1a19afb19
SHA512

99e28afd279e0d0d41622d4127e676b0c4caf1a4308490e724e34c1eb1f7c1a2da26763cafd10c92d1c5910fae70f4235a30b115a3174521027259395b6b73ab
SSDEEP

24576:W6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ4:XWdLQk

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
208	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\mntgaulf\ImagePath = "C:\\Windows\\SysWOW64\\mntgaulf\\bdwhowka.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	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe

Deletes itself 1 IoCs

pid	Process
3900	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3980	bdwhowka.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3980 set thread context of 3900	3980	bdwhowka.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1372	sc.exe
2100	sc.exe
3556	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
4180	2696	WerFault.exe	81
4792	3980	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	2025-01-18_bee29004aafc91f6dc983b3395338d49_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	bdwhowka.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2644	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	84
PID 2696 wrote to memory of 2644	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	84
PID 2696 wrote to memory of 2644	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	84
PID 2696 wrote to memory of 4636	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	86
PID 2696 wrote to memory of 4636	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	86
PID 2696 wrote to memory of 4636	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	86
PID 2696 wrote to memory of 1372	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	88
PID 2696 wrote to memory of 1372	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	88
PID 2696 wrote to memory of 1372	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	88
PID 2696 wrote to memory of 2100	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	90
PID 2696 wrote to memory of 2100	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	90
PID 2696 wrote to memory of 2100	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	90
PID 2696 wrote to memory of 3556	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	92
PID 2696 wrote to memory of 3556	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	92
PID 2696 wrote to memory of 3556	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	92
PID 2696 wrote to memory of 208	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	95
PID 2696 wrote to memory of 208	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	95
PID 2696 wrote to memory of 208	2696	2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe	95
PID 3980 wrote to memory of 3900	3980	bdwhowka.exe	106
PID 3980 wrote to memory of 3900	3980	bdwhowka.exe	106
PID 3980 wrote to memory of 3900	3980	bdwhowka.exe	106
PID 3980 wrote to memory of 3900	3980	bdwhowka.exe	106
PID 3980 wrote to memory of 3900	3980	bdwhowka.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mntgaulf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdwhowka.exe" C:\Windows\SysWOW64\mntgaulf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mntgaulf binPath= "C:\Windows\SysWOW64\mntgaulf\bdwhowka.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mntgaulf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mntgaulf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3556
- 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:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 1036
  2⤵
  - Program crash
  PID:4180

C:\Windows\SysWOW64\mntgaulf\bdwhowka.exe
C:\Windows\SysWOW64\mntgaulf\bdwhowka.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-18_bee29004aafc91f6dc983b3395338d49_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 556
  2⤵
  - Program crash
  PID:4792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2696 -ip 2696
1⤵
PID:2608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3980 -ip 3980
1⤵
PID:5100

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\bdwhowka.exe

Filesize
12.9MB

MD5
5f78f192f40986daa8ff303f9dfe52d7

SHA1
4aabdfa7cbb0d88fa807b51b1cb4d6770c716a1f

SHA256
1044f8fabb7cf0c81374057390978dd51e27d36bb74019ff3018a5cdd6fc8d02

SHA512
f2ffb1275d215b93eb07d0ad1a2fdfb618c69c7fe618caac2e86a7e5904931266b095d14924aa40f5e75c38005c25031f873d6a4ba15c75fa4dd5a5ebda6c6a8

Download Submit
memory/2696-8-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/2696-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2696-2-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/2696-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2696-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2696-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3900-14-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/3900-16-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/3900-17-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/3980-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3980-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3980-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3980-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads