tofsee | 3e5a7d45e7f5f0c1b5522e6d387d5b6f5dd53ba4c4bf7864b428bdcb8e3bba07

General

Target

2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe
Size

10.7MB
MD5

e3d8c336ab898de229a8409743a5c707
SHA1

812278f9a8f70c264bf4c12149fb18881cb9b508
SHA256

3e5a7d45e7f5f0c1b5522e6d387d5b6f5dd53ba4c4bf7864b428bdcb8e3bba07
SHA512

3ced12ff027f30c38f1770abe40fac0429c79443647e312554e24c20d4709229b2d50809d8601377f21143344bf4927709965ae8bd120d580a065eacb6c523d9
SSDEEP

3072:nLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/0:+OMdRQr7OB0ypmMXnl8XEPM3noSWOCJ

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
532	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\fsxnvzpz\ImagePath = "C:\\Windows\\SysWOW64\\fsxnvzpz\\prkvckyo.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	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe

Deletes itself 1 IoCs

pid	Process
4976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1728	prkvckyo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 4976	1728	prkvckyo.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1188	sc.exe
1584	sc.exe
3744	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
1884	4944	WerFault.exe	82
4000	1728	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.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	prkvckyo.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4944 wrote to memory of 2672	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	86
PID 4944 wrote to memory of 2672	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	86
PID 4944 wrote to memory of 2672	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	86
PID 4944 wrote to memory of 2284	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	88
PID 4944 wrote to memory of 2284	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	88
PID 4944 wrote to memory of 2284	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	88
PID 4944 wrote to memory of 1188	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	90
PID 4944 wrote to memory of 1188	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	90
PID 4944 wrote to memory of 1188	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	90
PID 4944 wrote to memory of 1584	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	92
PID 4944 wrote to memory of 1584	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	92
PID 4944 wrote to memory of 1584	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	92
PID 4944 wrote to memory of 3744	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	94
PID 4944 wrote to memory of 3744	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	94
PID 4944 wrote to memory of 3744	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	94
PID 4944 wrote to memory of 532	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	97
PID 4944 wrote to memory of 532	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	97
PID 4944 wrote to memory of 532	4944	2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe	97
PID 1728 wrote to memory of 4976	1728	prkvckyo.exe	102
PID 1728 wrote to memory of 4976	1728	prkvckyo.exe	102
PID 1728 wrote to memory of 4976	1728	prkvckyo.exe	102
PID 1728 wrote to memory of 4976	1728	prkvckyo.exe	102
PID 1728 wrote to memory of 4976	1728	prkvckyo.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fsxnvzpz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\prkvckyo.exe" C:\Windows\SysWOW64\fsxnvzpz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fsxnvzpz binPath= "C:\Windows\SysWOW64\fsxnvzpz\prkvckyo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fsxnvzpz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fsxnvzpz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3744
- 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:532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 1168
  2⤵
  - Program crash
  PID:1884

C:\Windows\SysWOW64\fsxnvzpz\prkvckyo.exe
C:\Windows\SysWOW64\fsxnvzpz\prkvckyo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-30_e3d8c336ab898de229a8409743a5c707_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 508
  2⤵
  - Program crash
  PID:4000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4944 -ip 4944
1⤵
PID:2376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1728 -ip 1728
1⤵
PID:1264

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\prkvckyo.exe

Filesize
14.2MB

MD5
ea8096f7ae10830a342ced58c3734c72

SHA1
490431269e5b7e68224f1f8f09516a4a17611b08

SHA256
5642ed99aba7acf6368546f03a9e1757bbb27c7cc141b185b442046d36ca06a0

SHA512
47cc312024d3ed9a12c644ff63cc67b6c70d8a067021268dfda057c721bb0ea80a1fbfaee3f4751861cf2da38a20aeb0b808caf66aca135f1d5167ef185cbee0

Download Submit
memory/1728-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1728-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1728-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1728-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4944-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4944-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4944-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4944-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4944-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4944-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/4976-14-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download
memory/4976-16-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download
memory/4976-17-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads