tofsee | 3f9a78351494a13f1dcd0d06b71f86a660ba6cff38c8d0fa3db962153ffcd173

Analysis

max time kernel
143s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/02/2025, 21:14

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General

Target

2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe
Size

14.7MB
MD5

83e82423b4283fbba8c2a0826833314b
SHA1

6e2fee4e8d675d94f85d7b50ad0594e7fc978f06
SHA256

3f9a78351494a13f1dcd0d06b71f86a660ba6cff38c8d0fa3db962153ffcd173
SHA512

5915c2ed839c5195febcd16485094a1e34014d03194ac5656560af87e65b4c2e886a1e79ab7a73ccb629c3732a57bd766f3874ec48a9417bed96c3531d5eb3d3
SSDEEP

24576:REfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:qfot

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\flwkxuzc = "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
2700	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\flwkxuzc\ImagePath = "C:\\Windows\\SysWOW64\\flwkxuzc\\jmsmbmxd.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1268	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2212	jmsmbmxd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2212 set thread context of 1268	2212	jmsmbmxd.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2552	sc.exe
2544	sc.exe
2016	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	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.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	jmsmbmxd.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 2536	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	30
PID 2768 wrote to memory of 2536	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	30
PID 2768 wrote to memory of 2536	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	30
PID 2768 wrote to memory of 2536	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	30
PID 2768 wrote to memory of 2692	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	32
PID 2768 wrote to memory of 2692	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	32
PID 2768 wrote to memory of 2692	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	32
PID 2768 wrote to memory of 2692	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	32
PID 2768 wrote to memory of 2552	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	34
PID 2768 wrote to memory of 2552	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	34
PID 2768 wrote to memory of 2552	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	34
PID 2768 wrote to memory of 2552	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	34
PID 2768 wrote to memory of 2544	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	36
PID 2768 wrote to memory of 2544	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	36
PID 2768 wrote to memory of 2544	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	36
PID 2768 wrote to memory of 2544	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	36
PID 2768 wrote to memory of 2016	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	38
PID 2768 wrote to memory of 2016	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	38
PID 2768 wrote to memory of 2016	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	38
PID 2768 wrote to memory of 2016	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	38
PID 2768 wrote to memory of 2700	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	41
PID 2768 wrote to memory of 2700	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	41
PID 2768 wrote to memory of 2700	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	41
PID 2768 wrote to memory of 2700	2768	2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe	41
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43
PID 2212 wrote to memory of 1268	2212	jmsmbmxd.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\flwkxuzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jmsmbmxd.exe" C:\Windows\SysWOW64\flwkxuzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create flwkxuzc binPath= "C:\Windows\SysWOW64\flwkxuzc\jmsmbmxd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description flwkxuzc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start flwkxuzc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2016
- 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:2700

C:\Windows\SysWOW64\flwkxuzc\jmsmbmxd.exe
C:\Windows\SysWOW64\flwkxuzc\jmsmbmxd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_83e82423b4283fbba8c2a0826833314b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2212
- 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:1268

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\jmsmbmxd.exe

Filesize
13.8MB

MD5
50f9990dd5e0bbd1febaec58409034d7

SHA1
3ebc9c3b9e178221a996b513da0f350a6c97c53b

SHA256
5b452eccd49c581cb340265255ab4e1fbdd6f3d4d448c3019abd1fdd52a18359

SHA512
8ec04cf325c1eb6a8cc8e3af5152a8c01a7f46f2e39ba4d8e61085037c26d3af4c31191b4ccdbbb338710e2d134fd7c68d8197916328481e4f946546de3cc509

Download Submit
memory/1268-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1268-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1268-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1268-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1268-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2212-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2768-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2768-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2768-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2768-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2768-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2768-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads