tofsee | c8cf802109f95a861a27a25eaae703d5bc220ee2a580d169df49363fe530836d

General

Target

2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe
Size

14.8MB
MD5

b1fae94afa283654000a8d7a78d1b104
SHA1

dde725fd0f524ee49848452bb5be1c7413badf43
SHA256

c8cf802109f95a861a27a25eaae703d5bc220ee2a580d169df49363fe530836d
SHA512

c9cb473738660a1228543461d32cc5ca6b8a964c233a718ff0eefa5190de9417bcf2ab8146e7eb728ea12279f3f99617bedcbb162052cf6be50241eb0d9a84c8
SSDEEP

49152:ZqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:ZqtYc3

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
3864	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\bfpnopvq\ImagePath = "C:\\Windows\\SysWOW64\\bfpnopvq\\wfzewvqm.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe

Deletes itself 1 IoCs

pid	Process
2648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3660	wfzewvqm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3660 set thread context of 2648	3660	wfzewvqm.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
3996	sc.exe
4876	sc.exe
1416	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
3276	4128	WerFault.exe	82
2112	3660	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wfzewvqm.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 384	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	83
PID 4128 wrote to memory of 384	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	83
PID 4128 wrote to memory of 384	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	83
PID 4128 wrote to memory of 1524	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	85
PID 4128 wrote to memory of 1524	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	85
PID 4128 wrote to memory of 1524	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	85
PID 4128 wrote to memory of 3996	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	87
PID 4128 wrote to memory of 3996	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	87
PID 4128 wrote to memory of 3996	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	87
PID 4128 wrote to memory of 4876	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	89
PID 4128 wrote to memory of 4876	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	89
PID 4128 wrote to memory of 4876	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	89
PID 4128 wrote to memory of 1416	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	91
PID 4128 wrote to memory of 1416	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	91
PID 4128 wrote to memory of 1416	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	91
PID 3660 wrote to memory of 2648	3660	wfzewvqm.exe	94
PID 3660 wrote to memory of 2648	3660	wfzewvqm.exe	94
PID 3660 wrote to memory of 2648	3660	wfzewvqm.exe	94
PID 3660 wrote to memory of 2648	3660	wfzewvqm.exe	94
PID 3660 wrote to memory of 2648	3660	wfzewvqm.exe	94
PID 4128 wrote to memory of 3864	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	96
PID 4128 wrote to memory of 3864	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	96
PID 4128 wrote to memory of 3864	4128	2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe	96

C:\Users\Admin\AppData\Local\Temp\2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bfpnopvq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfzewvqm.exe" C:\Windows\SysWOW64\bfpnopvq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bfpnopvq binPath= "C:\Windows\SysWOW64\bfpnopvq\wfzewvqm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bfpnopvq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bfpnopvq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1416
- 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:3864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4128 -s 1248
  2⤵
  - Program crash
  PID:3276

C:\Windows\SysWOW64\bfpnopvq\wfzewvqm.exe
C:\Windows\SysWOW64\bfpnopvq\wfzewvqm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-17_b1fae94afa283654000a8d7a78d1b104_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2648
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3660 -s 512
  2⤵
  - Program crash
  PID:2112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4128 -ip 4128
1⤵
PID:3280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3660 -ip 3660
1⤵
PID:3612

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\wfzewvqm.exe

Filesize
13.7MB

MD5
bb4ce6997466b8fda2246b04edd06463

SHA1
0fb5f3cb1c4b9ba841f5f6e11756ac2f7380251b

SHA256
e4d1f970d321b81f0cd0a2813c6ea2ae0ac3241be8674bed3256c9abcdfb8178

SHA512
20291f3ace94980b4b7dca906a86d5017482ddeb5e9f78fdf513453049ed7c0c7dc2abd4343d1257bc1acc578598ccc89691ac564d8b37e8cb6af14b2f735d63

Download Submit
memory/2648-8-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download
memory/2648-14-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download
memory/2648-15-0x0000000000FB0000-0x0000000000FC5000-memory.dmp

Filesize
84KB

Download
memory/3660-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4128-1-0x0000000002F90000-0x0000000003090000-memory.dmp

Filesize
1024KB

Download
memory/4128-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4128-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4128-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4128-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4128-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads