tofsee | 141db036f2473f2aad6ec65e11a5d236404a2a6901f45a7b51fca1fd9ccaa352

General

Target

2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe
Size

11.2MB
MD5

1a0409d9ccf8445c0679060efe550d30
SHA1

2aabbbde2e3e1d6f42d6387243a60737ba164222
SHA256

141db036f2473f2aad6ec65e11a5d236404a2a6901f45a7b51fca1fd9ccaa352
SHA512

2c8e95ea2777865b937f70ece6830056db7b5c240b6143f8dc0db9b51413a1e88e0e29563e123c542f9620d1c065c9d3da0d1ea564a896bef3446c538ab806e1
SSDEEP

6144:0LQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ9:pTYe+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
1732	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\wnfxzaun\ImagePath = "C:\\Windows\\SysWOW64\\wnfxzaun\\wihvgqys.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	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe

Deletes itself 1 IoCs

pid	Process
1948	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	wihvgqys.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 1948	2600	wihvgqys.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2320	sc.exe
4884	sc.exe
3412	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
3952	2768	WerFault.exe	82
4200	2600	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	sc.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	wihvgqys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 4028	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	83
PID 2768 wrote to memory of 4028	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	83
PID 2768 wrote to memory of 4028	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	83
PID 2768 wrote to memory of 4504	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	85
PID 2768 wrote to memory of 4504	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	85
PID 2768 wrote to memory of 4504	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	85
PID 2768 wrote to memory of 2320	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	87
PID 2768 wrote to memory of 2320	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	87
PID 2768 wrote to memory of 2320	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	87
PID 2768 wrote to memory of 4884	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	89
PID 2768 wrote to memory of 4884	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	89
PID 2768 wrote to memory of 4884	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	89
PID 2768 wrote to memory of 3412	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	92
PID 2768 wrote to memory of 3412	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	92
PID 2768 wrote to memory of 3412	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	92
PID 2768 wrote to memory of 1732	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	95
PID 2768 wrote to memory of 1732	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	95
PID 2768 wrote to memory of 1732	2768	2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe	95
PID 2600 wrote to memory of 1948	2600	wihvgqys.exe	101
PID 2600 wrote to memory of 1948	2600	wihvgqys.exe	101
PID 2600 wrote to memory of 1948	2600	wihvgqys.exe	101
PID 2600 wrote to memory of 1948	2600	wihvgqys.exe	101
PID 2600 wrote to memory of 1948	2600	wihvgqys.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wnfxzaun\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wihvgqys.exe" C:\Windows\SysWOW64\wnfxzaun\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wnfxzaun binPath= "C:\Windows\SysWOW64\wnfxzaun\wihvgqys.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wnfxzaun "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wnfxzaun
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3412
- 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:1732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2768 -s 1036
  2⤵
  - Program crash
  PID:3952

C:\Windows\SysWOW64\wnfxzaun\wihvgqys.exe
C:\Windows\SysWOW64\wnfxzaun\wihvgqys.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_1a0409d9ccf8445c0679060efe550d30_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2600 -s 508
  2⤵
  - Program crash
  PID:4200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2768 -ip 2768
1⤵
PID:2872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2600 -ip 2600
1⤵
PID:2808

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\wihvgqys.exe

Filesize
13.2MB

MD5
2d82ed0cef74e21c7550c803ba396dc0

SHA1
b99312790ab72b3c5f71cf7ee7ba2716fbb7a4e4

SHA256
da4bf44c418ea787d4b3276671c6e6e4cd72d77c3dc14cfb0c91109d9286226c

SHA512
db2df4b066a1c174088a3b14da302b0165a549d7bd5cc185db412869b1c0da9ad0f95db86a6ff3994db7a722c90946418ff27de80e124c5fb42b2f25c00fd527

Download Submit
memory/1948-14-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download
memory/1948-17-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download
memory/1948-16-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download
memory/2600-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2600-12-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2600-11-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2600-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2768-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2768-8-0x00000000006F0000-0x0000000000703000-memory.dmp

Filesize
76KB

Download
memory/2768-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/2768-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2768-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2768-2-0x00000000006F0000-0x0000000000703000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads