tofsee | 45d151f9dfbe922d2783ae25abba72cccd65b388388ff870168b4bc2f2dadb20

General

Target

2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe
Size

13.3MB
MD5

4e841177032768bf943fe6146883b0a6
SHA1

ee2624d773be4d52f0203218ee96ab716d72930c
SHA256

45d151f9dfbe922d2783ae25abba72cccd65b388388ff870168b4bc2f2dadb20
SHA512

3c995f2b739d321af4e938c672f4bf4f1b563582bd2b7601a712c61ee93ea547de1d2067be17dac039fbb5da25abff053fff7fd25b1430ddaf22a15b8cba4c5d
SSDEEP

3072:RLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/K:UOMdRQr7OB0ypmMXnl8XEPM3noSWOCR

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
2472	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\cxsmjpcu\ImagePath = "C:\\Windows\\SysWOW64\\cxsmjpcu\\eefqlmks.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-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe

Deletes itself 1 IoCs

pid	Process
2364	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
716	eefqlmks.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 716 set thread context of 2364	716	eefqlmks.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1284	sc.exe
5052	sc.exe
3084	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
220	4388	WerFault.exe	83
4972	716	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	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eefqlmks.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	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 4388 wrote to memory of 4796	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	86
PID 4388 wrote to memory of 4796	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	86
PID 4388 wrote to memory of 4796	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	86
PID 4388 wrote to memory of 5016	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	88
PID 4388 wrote to memory of 5016	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	88
PID 4388 wrote to memory of 5016	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	88
PID 4388 wrote to memory of 1284	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	90
PID 4388 wrote to memory of 1284	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	90
PID 4388 wrote to memory of 1284	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	90
PID 4388 wrote to memory of 5052	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	92
PID 4388 wrote to memory of 5052	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	92
PID 4388 wrote to memory of 5052	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	92
PID 4388 wrote to memory of 3084	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	94
PID 4388 wrote to memory of 3084	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	94
PID 4388 wrote to memory of 3084	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	94
PID 4388 wrote to memory of 2472	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	97
PID 4388 wrote to memory of 2472	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	97
PID 4388 wrote to memory of 2472	4388	2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe	97
PID 716 wrote to memory of 2364	716	eefqlmks.exe	102
PID 716 wrote to memory of 2364	716	eefqlmks.exe	102
PID 716 wrote to memory of 2364	716	eefqlmks.exe	102
PID 716 wrote to memory of 2364	716	eefqlmks.exe	102
PID 716 wrote to memory of 2364	716	eefqlmks.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxsmjpcu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe" C:\Windows\SysWOW64\cxsmjpcu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxsmjpcu binPath= "C:\Windows\SysWOW64\cxsmjpcu\eefqlmks.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxsmjpcu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxsmjpcu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3084
- 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:2472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 1332
  2⤵
  - Program crash
  PID:220

C:\Windows\SysWOW64\cxsmjpcu\eefqlmks.exe
C:\Windows\SysWOW64\cxsmjpcu\eefqlmks.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_4e841177032768bf943fe6146883b0a6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 716 -s 512
  2⤵
  - Program crash
  PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4388 -ip 4388
1⤵
PID:1132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 716 -ip 716
1⤵
PID:2132

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe

Filesize
12.1MB

MD5
bf0482b484090d1a7804ebb245a98bb1

SHA1
9bde15de16971320eb45314538f3916547f85e4c

SHA256
7361cc6e57468a8f812fb6174a3ca3081d136942c82a2cf6250e8eabdb9b0aee

SHA512
cd6d9cf4d3a89a93f1274b2e85ce54f396c6aa3b573c93b8b30cbac6e229915b39c714d14befbf1e91a93abbac9aeec8cf589972665e1d32c60cea1da9c5b310

Download Submit
memory/716-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/716-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/716-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/716-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2364-14-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/2364-16-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/2364-18-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/4388-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4388-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4388-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/4388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4388-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads