tofsee | 73d3a15cbf2312b8b5e83c9d9dc0ef9a7ca79d7801cc853088c7daa28802b7aa

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 03:48

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General

Target

2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe
Size

10.9MB
MD5

f101a6bc90173ca5c88c5789b42012a9
SHA1

11121d98e1354a89b6be8fa20031d18a691f7282
SHA256

73d3a15cbf2312b8b5e83c9d9dc0ef9a7ca79d7801cc853088c7daa28802b7aa
SHA512

698a605cf139b2c8e34ab0fba2aa01de66db23b193ced740a6e04503609e40ff3e550373b2e6e18a9ec3c7ff6a054247909766c396464b08067083c41d9b84dd
SSDEEP

49152:/qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP3:/qtYc3i

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fmkqvvxb = "0"	svchost.exe

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
2788	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\fmkqvvxb\ImagePath = "C:\\Windows\\SysWOW64\\fmkqvvxb\\mrbwqczb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2908	mrbwqczb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2908 set thread context of 2748	2908	mrbwqczb.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2148	sc.exe
2740	sc.exe
2896	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mrbwqczb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.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 30 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 1736	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	30
PID 3012 wrote to memory of 1736	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	30
PID 3012 wrote to memory of 1736	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	30
PID 3012 wrote to memory of 1736	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	30
PID 3012 wrote to memory of 2232	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	32
PID 3012 wrote to memory of 2232	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	32
PID 3012 wrote to memory of 2232	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	32
PID 3012 wrote to memory of 2232	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	32
PID 3012 wrote to memory of 2148	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	34
PID 3012 wrote to memory of 2148	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	34
PID 3012 wrote to memory of 2148	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	34
PID 3012 wrote to memory of 2148	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	34
PID 3012 wrote to memory of 2740	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	36
PID 3012 wrote to memory of 2740	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	36
PID 3012 wrote to memory of 2740	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	36
PID 3012 wrote to memory of 2740	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	36
PID 3012 wrote to memory of 2896	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	38
PID 3012 wrote to memory of 2896	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	38
PID 3012 wrote to memory of 2896	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	38
PID 3012 wrote to memory of 2896	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	38
PID 3012 wrote to memory of 2788	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	41
PID 3012 wrote to memory of 2788	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	41
PID 3012 wrote to memory of 2788	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	41
PID 3012 wrote to memory of 2788	3012	2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe	41
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43
PID 2908 wrote to memory of 2748	2908	mrbwqczb.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmkqvvxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mrbwqczb.exe" C:\Windows\SysWOW64\fmkqvvxb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmkqvvxb binPath= "C:\Windows\SysWOW64\fmkqvvxb\mrbwqczb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmkqvvxb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmkqvvxb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:2788

C:\Windows\SysWOW64\fmkqvvxb\mrbwqczb.exe
C:\Windows\SysWOW64\fmkqvvxb\mrbwqczb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f101a6bc90173ca5c88c5789b42012a9_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.6MB

MD5
d2a6285281b9251fad852e6674d627d5

SHA1
00bae2fe3cf6f832252f453b8b3f1373b563b13c

SHA256
ac07bd844dd88ff07f954b2a9fdf3a21fe90b78bb2866862ee5ff00e5604b8ee

SHA512
1ede58994358725fa808b164cafc53e6f0ec383e747575b912cd0fa983bd584aef0c254da32c4cbeedfc1cdc67139b2d9d7ae450ca396cf9a194aeaa4b57ff0f

Download Submit
memory/2748-16-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2748-14-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2748-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-11-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2748-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2908-17-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3012-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3012-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3012-1-0x0000000002F90000-0x0000000003090000-memory.dmp

Filesize
1024KB

Download
memory/3012-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads