tofsee | 2b81c5946f5c47a09703ba433305f5df54730c29033fe988beca31655d7119ef

Analysis

max time kernel
147s
max time network
140s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 21:23

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General

Target

2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe
Size

14.9MB
MD5

b0f09514c99964765ca02524215f8315
SHA1

681adbf30ab864d06b14d1f8690c4a55875c1f0e
SHA256

2b81c5946f5c47a09703ba433305f5df54730c29033fe988beca31655d7119ef
SHA512

5609396f51c1ded618a670cb061696db72514abec59301138f86b4a8fbc6c548aaf8172bddd50ac8f870cfa1b930ce54dd318cbeaaccc3347a8323e3c2494c50
SSDEEP

393216:EXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

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\ehjooqkb = "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
2648	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\ehjooqkb\ImagePath = "C:\\Windows\\SysWOW64\\ehjooqkb\\conbmwey.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3068	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1104	conbmwey.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1104 set thread context of 3068	1104	conbmwey.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2916	sc.exe
2204	sc.exe
2628	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

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	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe
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	conbmwey.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2720	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	30
PID 1916 wrote to memory of 2720	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	30
PID 1916 wrote to memory of 2720	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	30
PID 1916 wrote to memory of 2720	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	30
PID 1916 wrote to memory of 2804	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	32
PID 1916 wrote to memory of 2804	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	32
PID 1916 wrote to memory of 2804	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	32
PID 1916 wrote to memory of 2804	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	32
PID 1916 wrote to memory of 2204	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	34
PID 1916 wrote to memory of 2204	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	34
PID 1916 wrote to memory of 2204	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	34
PID 1916 wrote to memory of 2204	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	34
PID 1916 wrote to memory of 2628	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	36
PID 1916 wrote to memory of 2628	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	36
PID 1916 wrote to memory of 2628	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	36
PID 1916 wrote to memory of 2628	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	36
PID 1916 wrote to memory of 2916	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	38
PID 1916 wrote to memory of 2916	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	38
PID 1916 wrote to memory of 2916	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	38
PID 1916 wrote to memory of 2916	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	38
PID 1916 wrote to memory of 2648	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	40
PID 1916 wrote to memory of 2648	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	40
PID 1916 wrote to memory of 2648	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	40
PID 1916 wrote to memory of 2648	1916	2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe	40
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43
PID 1104 wrote to memory of 3068	1104	conbmwey.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ehjooqkb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\conbmwey.exe" C:\Windows\SysWOW64\ehjooqkb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ehjooqkb binPath= "C:\Windows\SysWOW64\ehjooqkb\conbmwey.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ehjooqkb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ehjooqkb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2916
- 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:2648

C:\Windows\SysWOW64\ehjooqkb\conbmwey.exe
C:\Windows\SysWOW64\ehjooqkb\conbmwey.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b0f09514c99964765ca02524215f8315_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1104
- 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:3068

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\conbmwey.exe

Filesize
12.4MB

MD5
3a932f09203ee2dcf81b2def33531fc2

SHA1
75a8773e023268b64e7c0f98cfa6d475bf46ce8f

SHA256
6f9003aa884f34fab373f74c9ea007e50eac412e414c84ce7723bb4be875d49c

SHA512
7e0632be800dc625708264297d14641940d0da7a1dd27b82ed701d667cd0108a04e01d59e69e2184d0605226451849310c305e1a95465bc6d43f27c7f1966cd3

Download Submit
memory/1104-18-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1916-6-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/1916-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1916-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/1916-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1916-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3068-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3068-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3068-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3068-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3068-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads