tofsee | 8155d7a833a20b302c9a529ad3e7f7125ad23118c408f862e35536e079575b74

General

Target

2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe
Size

10.5MB
MD5

5c8ed6be9c8ac04c865c298718f2ccfe
SHA1

ca7ad1ec8dff5c70baa0ef32f485bfe52f340e6a
SHA256

8155d7a833a20b302c9a529ad3e7f7125ad23118c408f862e35536e079575b74
SHA512

37a4873a0e837ce19f465ba1cd52cf053a8ef8c855bfd13b6cbf18a560026e7d5604af28da4eb7938aed935924e07c86955e72072eb005fe3e0db204b28cf6f8
SSDEEP

196608:ZyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/:UXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXv

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3780	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\oxzwqxbk\ImagePath = "C:\\Windows\\SysWOW64\\oxzwqxbk\\clfkcbws.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe

Deletes itself 1 IoCs

pid	Process
3920	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3824	clfkcbws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3824 set thread context of 3920	3824	clfkcbws.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1380	sc.exe
2500	sc.exe
3864	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	netsh.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	clfkcbws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 2364	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	87
PID 4764 wrote to memory of 2364	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	87
PID 4764 wrote to memory of 2364	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	87
PID 4764 wrote to memory of 944	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	89
PID 4764 wrote to memory of 944	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	89
PID 4764 wrote to memory of 944	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	89
PID 4764 wrote to memory of 1380	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	91
PID 4764 wrote to memory of 1380	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	91
PID 4764 wrote to memory of 1380	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	91
PID 4764 wrote to memory of 2500	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	94
PID 4764 wrote to memory of 2500	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	94
PID 4764 wrote to memory of 2500	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	94
PID 4764 wrote to memory of 3864	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	97
PID 4764 wrote to memory of 3864	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	97
PID 4764 wrote to memory of 3864	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	97
PID 4764 wrote to memory of 3780	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	100
PID 4764 wrote to memory of 3780	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	100
PID 4764 wrote to memory of 3780	4764	2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe	100
PID 3824 wrote to memory of 3920	3824	clfkcbws.exe	102
PID 3824 wrote to memory of 3920	3824	clfkcbws.exe	102
PID 3824 wrote to memory of 3920	3824	clfkcbws.exe	102
PID 3824 wrote to memory of 3920	3824	clfkcbws.exe	102
PID 3824 wrote to memory of 3920	3824	clfkcbws.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oxzwqxbk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clfkcbws.exe" C:\Windows\SysWOW64\oxzwqxbk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oxzwqxbk binPath= "C:\Windows\SysWOW64\oxzwqxbk\clfkcbws.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oxzwqxbk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oxzwqxbk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3864
- 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:3780

C:\Windows\SysWOW64\oxzwqxbk\clfkcbws.exe
C:\Windows\SysWOW64\oxzwqxbk\clfkcbws.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-05_5c8ed6be9c8ac04c865c298718f2ccfe_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3920

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\clfkcbws.exe

Filesize
10.3MB

MD5
d8436dafdea8b1cd242c2d08aa06d706

SHA1
d1f835052faf8f6409534a48021c11b38a379ba7

SHA256
376ea5c074cb57ba0e9a971b7ef5a7799d149207c236a0eda5d0e45608194094

SHA512
4ed69b1112def19c2653064ac45978d42b661a634737e2c6a0923229acebbffa22e088c216d717848725155d34428f98c955e151b3f5622821365ec39d53fdb3

Download Submit
memory/3824-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3824-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3920-12-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3920-16-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3920-15-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3920-19-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/3920-20-0x0000000000B30000-0x0000000000B45000-memory.dmp

Filesize
84KB

Download
memory/4764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4764-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4764-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/4764-9-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads