tofsee | f0c9aa5e326d2d098de089c6375bddffbdfea58fe8872be6433498d4ed9b98f8

General

Target

2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe
Size

13.8MB
MD5

39ba856587dcab3f4fdf8d82dfe63442
SHA1

842637910a05dbdcc1d98f4c9b39ae8169039a03
SHA256

f0c9aa5e326d2d098de089c6375bddffbdfea58fe8872be6433498d4ed9b98f8
SHA512

7a94a876ab57962bf0852e7a9d39900f999f636ff92bc27f2521b6918cc3540ba448d8fcb81d044849ddddd95fa96f19a40bd285fbb9bbafd2cd5ab2de485b17
SSDEEP

6144:aLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQd:bTYe+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
2168	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\fbzrlxhv\ImagePath = "C:\\Windows\\SysWOW64\\fbzrlxhv\\wskkhwvj.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	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe

Deletes itself 1 IoCs

pid	Process
3508	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	wskkhwvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2260 set thread context of 3508	2260	wskkhwvj.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
1928	sc.exe
3280	sc.exe
1676	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
520	4792	WerFault.exe	83
2984	2260	WerFault.exe	100

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	wskkhwvj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 2824	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	87
PID 4792 wrote to memory of 2824	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	87
PID 4792 wrote to memory of 2824	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	87
PID 4792 wrote to memory of 3732	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	89
PID 4792 wrote to memory of 3732	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	89
PID 4792 wrote to memory of 3732	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	89
PID 4792 wrote to memory of 1928	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	91
PID 4792 wrote to memory of 1928	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	91
PID 4792 wrote to memory of 1928	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	91
PID 4792 wrote to memory of 3280	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	95
PID 4792 wrote to memory of 3280	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	95
PID 4792 wrote to memory of 3280	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	95
PID 4792 wrote to memory of 1676	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	98
PID 4792 wrote to memory of 1676	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	98
PID 4792 wrote to memory of 1676	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	98
PID 4792 wrote to memory of 2168	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	103
PID 4792 wrote to memory of 2168	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	103
PID 4792 wrote to memory of 2168	4792	2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe	103
PID 2260 wrote to memory of 3508	2260	wskkhwvj.exe	106
PID 2260 wrote to memory of 3508	2260	wskkhwvj.exe	106
PID 2260 wrote to memory of 3508	2260	wskkhwvj.exe	106
PID 2260 wrote to memory of 3508	2260	wskkhwvj.exe	106
PID 2260 wrote to memory of 3508	2260	wskkhwvj.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fbzrlxhv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wskkhwvj.exe" C:\Windows\SysWOW64\fbzrlxhv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fbzrlxhv binPath= "C:\Windows\SysWOW64\fbzrlxhv\wskkhwvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fbzrlxhv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fbzrlxhv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1676
- 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:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 1332
  2⤵
  - Program crash
  PID:520

C:\Windows\SysWOW64\fbzrlxhv\wskkhwvj.exe
C:\Windows\SysWOW64\fbzrlxhv\wskkhwvj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_39ba856587dcab3f4fdf8d82dfe63442_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2260 -s 512
  2⤵
  - Program crash
  PID:2984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2260 -ip 2260
1⤵
PID:552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4792 -ip 4792
1⤵
PID:824

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\wskkhwvj.exe

Filesize
13.8MB

MD5
758e5cb2d7db2a375682186f943b4630

SHA1
a7c122e0ec188c1bbb41fff9fcee44c771e66c33

SHA256
1db0062bd60a6e838806ed36c46d255901fc906ebf78da7f8e6683f78b681ced

SHA512
d2d00fb50bc1537f0e929a049edd5bb094955783c4376d1d8bb4afe45a9458cd3aea67e6e21ab455a5c52a3687a3e8945388c3f04728139bfdc7079882e9e754

Download Submit
memory/2260-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2260-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2260-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3508-10-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/3508-13-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/3508-19-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/3508-20-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/3508-21-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/4792-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/4792-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4792-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4792-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4792-17-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads