tofsee | 8d36e7449053f920033f770121952e5c8843c4d84078ac742d3f2017ae428e9a

General

Target

2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe
Size

13.0MB
MD5

402ef750eeb6f0bf1cf8c0afa7d5e870
SHA1

de5899740d65c56dd7306f309fb31d0b32241cdb
SHA256

8d36e7449053f920033f770121952e5c8843c4d84078ac742d3f2017ae428e9a
SHA512

98acfd5bf20729f554cf295a77c6d041ffd2fe2981c7e1f1c3563b1aa546a38de631dd6611f4d3abf8ecdd60a1d12fc73cab005406301343fcfc52f563359917
SSDEEP

6144:aLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ4: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
1912	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\nebrxl\ImagePath = "C:\\Windows\\SysWOW64\\nebrxl\\inxsmyvx.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe

Deletes itself 1 IoCs

pid	Process
1668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1060	inxsmyvx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1060 set thread context of 1668	1060	inxsmyvx.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
3516	sc.exe
3844	sc.exe
4888	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3044	2332	WerFault.exe	81
1076	1060	WerFault.exe	92

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	inxsmyvx.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 2332 wrote to memory of 232	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	82
PID 2332 wrote to memory of 232	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	82
PID 2332 wrote to memory of 232	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	82
PID 2332 wrote to memory of 216	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	84
PID 2332 wrote to memory of 216	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	84
PID 2332 wrote to memory of 216	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	84
PID 2332 wrote to memory of 3516	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	86
PID 2332 wrote to memory of 3516	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	86
PID 2332 wrote to memory of 3516	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	86
PID 2332 wrote to memory of 3844	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	88
PID 2332 wrote to memory of 3844	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	88
PID 2332 wrote to memory of 3844	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	88
PID 2332 wrote to memory of 4888	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	90
PID 2332 wrote to memory of 4888	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	90
PID 2332 wrote to memory of 4888	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	90
PID 2332 wrote to memory of 1912	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	93
PID 2332 wrote to memory of 1912	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	93
PID 2332 wrote to memory of 1912	2332	2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe	93
PID 1060 wrote to memory of 1668	1060	inxsmyvx.exe	96
PID 1060 wrote to memory of 1668	1060	inxsmyvx.exe	96
PID 1060 wrote to memory of 1668	1060	inxsmyvx.exe	96
PID 1060 wrote to memory of 1668	1060	inxsmyvx.exe	96
PID 1060 wrote to memory of 1668	1060	inxsmyvx.exe	96

C:\Users\Admin\AppData\Local\Temp\2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nebrxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\inxsmyvx.exe" C:\Windows\SysWOW64\nebrxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nebrxl binPath= "C:\Windows\SysWOW64\nebrxl\inxsmyvx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nebrxl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nebrxl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4888
- 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:1912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 1256
  2⤵
  - Program crash
  PID:3044

C:\Windows\SysWOW64\nebrxl\inxsmyvx.exe
C:\Windows\SysWOW64\nebrxl\inxsmyvx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_402ef750eeb6f0bf1cf8c0afa7d5e870_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 508
  2⤵
  - Program crash
  PID:1076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1060 -ip 1060
1⤵
PID:1984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2332 -ip 2332
1⤵
PID:3060

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\inxsmyvx.exe

Filesize
10.7MB

MD5
69a35dc7d4fa8f3bf696e0001794f4a7

SHA1
7aba0d24b77e103252161f6c32439ef4d5b7acd4

SHA256
2dcc854d6cee30046ab8994362b1874afc335ece3f300f0cdc2188eb0c1aa446

SHA512
48406b85ddfe184d5bbfcab09f33d5f4c26b41ce873f269b2bbe864acbcfea590b8f2007b12a60996a6e3409491e2c7b8a75317c7ba7ca0d9be1df152db63869

Download Submit
memory/1060-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1060-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1060-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1060-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1668-14-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1668-11-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1668-20-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1668-21-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1668-22-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/2332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2332-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/2332-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2332-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-18-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads