tofsee | 06bd0dc28db9c7f463fd3c178a0eef882b4cdbff118d95389b1cafa8ab93e617

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 20:05

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General

Target

2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe
Size

11.1MB
MD5

f48605f506b20afc9f3bc5a77d0c373f
SHA1

e1bcbb011c3ed1496a13314bc72cf1700b2f7e96
SHA256

06bd0dc28db9c7f463fd3c178a0eef882b4cdbff118d95389b1cafa8ab93e617
SHA512

cd8cf10385f06585196dfc18e3a548972b2274aeb4404ce6b58aedc36139190cade4d2d35387bda48895551beb2d35d82ad13a3edf0d7870d592bca5725a4f19
SSDEEP

196608:/yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:aXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3

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\mmzfgks = "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
3040	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\mmzfgks\ImagePath = "C:\\Windows\\SysWOW64\\mmzfgks\\oopavwuc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	oopavwuc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 2584	2756	oopavwuc.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2840	sc.exe
2240	sc.exe
2452	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

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	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	oopavwuc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2824	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	30
PID 2316 wrote to memory of 2824	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	30
PID 2316 wrote to memory of 2824	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	30
PID 2316 wrote to memory of 2824	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	30
PID 2316 wrote to memory of 2968	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	32
PID 2316 wrote to memory of 2968	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	32
PID 2316 wrote to memory of 2968	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	32
PID 2316 wrote to memory of 2968	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	32
PID 2316 wrote to memory of 2240	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	34
PID 2316 wrote to memory of 2240	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	34
PID 2316 wrote to memory of 2240	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	34
PID 2316 wrote to memory of 2240	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	34
PID 2316 wrote to memory of 2452	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	36
PID 2316 wrote to memory of 2452	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	36
PID 2316 wrote to memory of 2452	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	36
PID 2316 wrote to memory of 2452	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	36
PID 2316 wrote to memory of 2840	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	38
PID 2316 wrote to memory of 2840	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	38
PID 2316 wrote to memory of 2840	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	38
PID 2316 wrote to memory of 2840	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	38
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2756 wrote to memory of 2584	2756	oopavwuc.exe	41
PID 2316 wrote to memory of 3040	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	42
PID 2316 wrote to memory of 3040	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	42
PID 2316 wrote to memory of 3040	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	42
PID 2316 wrote to memory of 3040	2316	2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmzfgks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oopavwuc.exe" C:\Windows\SysWOW64\mmzfgks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mmzfgks binPath= "C:\Windows\SysWOW64\mmzfgks\oopavwuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mmzfgks "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mmzfgks
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- 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:3040

C:\Windows\SysWOW64\mmzfgks\oopavwuc.exe
C:\Windows\SysWOW64\mmzfgks\oopavwuc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f48605f506b20afc9f3bc5a77d0c373f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- 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:2584

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\oopavwuc.exe

Filesize
14.1MB

MD5
6768a24cd99a4ef4a89cae0c2bbb4f10

SHA1
15ae184e90d8f3e0445f2370fc912b1d0c5cc65c

SHA256
70761fb68cc1918c96030d040eb1a76131cfa763e31cd2ac420a43dfb5404bb7

SHA512
f53bafe6f59d44b526d661d349ca992c8220eaf6a8f857b3553ca5f4e02acc611143f8ab0c025afc8c4168a2cb5282dfcb680b546df98d374af5dd517a33b15d

Download Submit
memory/2316-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2316-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2316-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2316-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2316-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/2316-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2584-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads