tofsee | e8cd89a66fd7b4b62499d1920e8f5c34214cc3129891722f46fdd82b59b87772

General

Target

2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe
Size

11.3MB
MD5

b4a9d9f26145256ac75bfc385a27c3e3
SHA1

a39a1fcbe48f002ca4eadacce55d014fc0b10c3e
SHA256

e8cd89a66fd7b4b62499d1920e8f5c34214cc3129891722f46fdd82b59b87772
SHA512

79a8ef14642aa2582c47a9238e2b66b5276280cae0e110adabf20f0a0d28aca92840c22b836b47af5edcaabbba495439ec46e16505f5690cb5e4944b4fbc0760
SSDEEP

196608:6yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:vXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn

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
2156	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\bjrsxfur\ImagePath = "C:\\Windows\\SysWOW64\\bjrsxfur\\hhitopnv.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-1-5-21-70482961-775596374-3727440602-1000\Control Panel\International\Geo\Nation	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe

Deletes itself 1 IoCs

pid	Process
1312	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	hhitopnv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1992 set thread context of 1312	1992	hhitopnv.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3652	sc.exe
4340	sc.exe
452	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

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	hhitopnv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_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	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 628	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	86
PID 1060 wrote to memory of 628	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	86
PID 1060 wrote to memory of 628	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	86
PID 1060 wrote to memory of 2124	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	88
PID 1060 wrote to memory of 2124	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	88
PID 1060 wrote to memory of 2124	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	88
PID 1060 wrote to memory of 3652	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	90
PID 1060 wrote to memory of 3652	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	90
PID 1060 wrote to memory of 3652	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	90
PID 1060 wrote to memory of 4340	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	92
PID 1060 wrote to memory of 4340	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	92
PID 1060 wrote to memory of 4340	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	92
PID 1060 wrote to memory of 452	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	94
PID 1060 wrote to memory of 452	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	94
PID 1060 wrote to memory of 452	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	94
PID 1992 wrote to memory of 1312	1992	hhitopnv.exe	97
PID 1992 wrote to memory of 1312	1992	hhitopnv.exe	97
PID 1992 wrote to memory of 1312	1992	hhitopnv.exe	97
PID 1992 wrote to memory of 1312	1992	hhitopnv.exe	97
PID 1992 wrote to memory of 1312	1992	hhitopnv.exe	97
PID 1060 wrote to memory of 2156	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	98
PID 1060 wrote to memory of 2156	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	98
PID 1060 wrote to memory of 2156	1060	2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjrsxfur\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hhitopnv.exe" C:\Windows\SysWOW64\bjrsxfur\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjrsxfur binPath= "C:\Windows\SysWOW64\bjrsxfur\hhitopnv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjrsxfur "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjrsxfur
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:452
- 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:2156

C:\Windows\SysWOW64\bjrsxfur\hhitopnv.exe
C:\Windows\SysWOW64\bjrsxfur\hhitopnv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_b4a9d9f26145256ac75bfc385a27c3e3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1312

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\hhitopnv.exe

Filesize
13.6MB

MD5
5a3f223a62cddd7fe18273850fa2963a

SHA1
7c333872684c5b2cd0b5845870982b22e91ab3b9

SHA256
992aba5145fffa85fa52ff1eb0ce3573c93cbc0895dfc27253ea8316a14945a6

SHA512
36c2b2e71d1ef7e69d83c401ea9aa8f523a1b93566ebb81cdda943deeb84e0cae9c6abf3b8cc504b1982881615d9f23ab0ce79c63cb7fd35843e889296dab112

Download Submit
memory/1060-18-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1060-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1060-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/1060-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1060-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1312-11-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1312-16-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1312-20-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1312-21-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1312-22-0x0000000000920000-0x0000000000935000-memory.dmp

Filesize
84KB

Download
memory/1992-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1992-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1992-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1992-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads