tofsee | c9e8b3cc85721662eb296b73db92b2029a1ddf4c3e0ab32e876ab50eaee72f33

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
06-02-2025 16:15

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General

Target

2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe
Size

13.7MB
MD5

f3eda9233b9866583638eab9a80cd886
SHA1

be8b2ac167a03f073d2a2a26e849c5fcda57e4a7
SHA256

c9e8b3cc85721662eb296b73db92b2029a1ddf4c3e0ab32e876ab50eaee72f33
SHA512

bfe3efcdf0e58624cf5f531e6ebeb1ce500c26e52b1b54c5bab13ce7baf7cde736e43b5baa81c0b3d540b9932f347935f704f221b2c336ade12da515f54f80b4
SSDEEP

6144:7LQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQL:QTYe+D2jFu+iZoUFhAzU

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\mieigcsf = "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
2716	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\mieigcsf\ImagePath = "C:\\Windows\\SysWOW64\\mieigcsf\\oopavwuc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2960	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	oopavwuc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 2960	2700	oopavwuc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2648	sc.exe
2632	sc.exe
2996	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	oopavwuc.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2776	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	30
PID 2076 wrote to memory of 2776	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	30
PID 2076 wrote to memory of 2776	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	30
PID 2076 wrote to memory of 2776	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	30
PID 2076 wrote to memory of 2768	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	32
PID 2076 wrote to memory of 2768	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	32
PID 2076 wrote to memory of 2768	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	32
PID 2076 wrote to memory of 2768	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	32
PID 2076 wrote to memory of 2648	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	34
PID 2076 wrote to memory of 2648	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	34
PID 2076 wrote to memory of 2648	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	34
PID 2076 wrote to memory of 2648	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	34
PID 2076 wrote to memory of 2632	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	36
PID 2076 wrote to memory of 2632	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	36
PID 2076 wrote to memory of 2632	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	36
PID 2076 wrote to memory of 2632	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	36
PID 2076 wrote to memory of 2996	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	38
PID 2076 wrote to memory of 2996	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	38
PID 2076 wrote to memory of 2996	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	38
PID 2076 wrote to memory of 2996	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	38
PID 2076 wrote to memory of 2716	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	41
PID 2076 wrote to memory of 2716	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	41
PID 2076 wrote to memory of 2716	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	41
PID 2076 wrote to memory of 2716	2076	2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe	41
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43
PID 2700 wrote to memory of 2960	2700	oopavwuc.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mieigcsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oopavwuc.exe" C:\Windows\SysWOW64\mieigcsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mieigcsf binPath= "C:\Windows\SysWOW64\mieigcsf\oopavwuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mieigcsf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mieigcsf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2996
- 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:2716

C:\Windows\SysWOW64\mieigcsf\oopavwuc.exe
C:\Windows\SysWOW64\mieigcsf\oopavwuc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f3eda9233b9866583638eab9a80cd886_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- 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:2960

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
12.8MB

MD5
62bd9ebc4581e1369293ac06de0b0180

SHA1
763d5dc0923c11b121b2637608c580e978ef9b6b

SHA256
aa93e4cb006e64457a5604996881a7761ee51d53befc8af78635791aa769a154

SHA512
0ace716b5122fbe37e3ce3baf03c934d449fe1a4ba12fb0c1c2ce5fad7850ca4fdbbb6a39705e642f5ca1795a2938be06166b80ac5b9a61e41bf8b0af50d7ab5

Download Submit
memory/2076-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-1-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/2076-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2076-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2700-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2960-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2960-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2960-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2960-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2960-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads