tofsee | 4ee244b88f4cd591d0b492fecf8a70fc0f7fab84244bdeedc2da57d11487462b

General

Target

2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe
Size

10.8MB
MD5

ee418b28ee74423c9f4440db31fd0d04
SHA1

09f2b70b533a938270d42769d3ac5f13db417e73
SHA256

4ee244b88f4cd591d0b492fecf8a70fc0f7fab84244bdeedc2da57d11487462b
SHA512

fefc5deb8a054ec4c056931276bc6e91d0cf7e64d93b5aa46e27d255701b511041e823c10a7a199622e853162e2bc16e8ea78d2bff5e5f5e71de71608a43b659
SSDEEP

6144:qLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ9:LTYe+D2jFu+iZoUFhAz

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
3556	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\yzluhbtp\ImagePath = "C:\\Windows\\SysWOW64\\yzluhbtp\\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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe

Deletes itself 1 IoCs

pid	Process
1528	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2196	clfkcbws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 1528	2196	clfkcbws.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3212	sc.exe
3564	sc.exe
5064	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
396	2376	WerFault.exe	82
2604	2196	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	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	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_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	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 2376 wrote to memory of 1080	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	86
PID 2376 wrote to memory of 1080	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	86
PID 2376 wrote to memory of 1080	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	86
PID 2376 wrote to memory of 4988	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	88
PID 2376 wrote to memory of 4988	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	88
PID 2376 wrote to memory of 4988	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	88
PID 2376 wrote to memory of 5064	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	90
PID 2376 wrote to memory of 5064	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	90
PID 2376 wrote to memory of 5064	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	90
PID 2376 wrote to memory of 3212	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	92
PID 2376 wrote to memory of 3212	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	92
PID 2376 wrote to memory of 3212	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	92
PID 2376 wrote to memory of 3564	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	94
PID 2376 wrote to memory of 3564	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	94
PID 2376 wrote to memory of 3564	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	94
PID 2376 wrote to memory of 3556	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	97
PID 2376 wrote to memory of 3556	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	97
PID 2376 wrote to memory of 3556	2376	2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe	97
PID 2196 wrote to memory of 1528	2196	clfkcbws.exe	101
PID 2196 wrote to memory of 1528	2196	clfkcbws.exe	101
PID 2196 wrote to memory of 1528	2196	clfkcbws.exe	101
PID 2196 wrote to memory of 1528	2196	clfkcbws.exe	101
PID 2196 wrote to memory of 1528	2196	clfkcbws.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yzluhbtp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clfkcbws.exe" C:\Windows\SysWOW64\yzluhbtp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yzluhbtp binPath= "C:\Windows\SysWOW64\yzluhbtp\clfkcbws.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yzluhbtp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yzluhbtp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3564
- 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:3556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2376 -s 1044
  2⤵
  - Program crash
  PID:396

C:\Windows\SysWOW64\yzluhbtp\clfkcbws.exe
C:\Windows\SysWOW64\yzluhbtp\clfkcbws.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_ee418b28ee74423c9f4440db31fd0d04_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 508
  2⤵
  - Program crash
  PID:2604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2376 -ip 2376
1⤵
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2196 -ip 2196
1⤵
PID:4720

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\clfkcbws.exe

Filesize
10.4MB

MD5
4c5491b9fee7b71f9ed4eedd1ae70e9f

SHA1
1fb82255d4fb203162786104b6b37a34f5d82d91

SHA256
5c0a55f3fa3176055dcf13bb6f945dfab19b8385b0112980d3d34363bf07d78f

SHA512
c1dc45bf45c24b1f9864d6e5e8220285486d52cdf1bfa9ab2923c61d49e76764fab9fe372c680ff160bd5a22b3fa5767f34e13efade5db1925b9cb1f8dd1b363

Download Submit
memory/1528-11-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/1528-19-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/1528-18-0x00000000006F0000-0x0000000000705000-memory.dmp

Filesize
84KB

Download
memory/2196-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2196-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2196-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2196-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2376-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/2376-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2376-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-14-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/2376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads