tofsee | 2ec2ed3e9c0dea7bdd9376559a577b13c1f84a06c158cbe2b7aae4c6ac3f6022

Analysis

max time kernel
143s
max time network
131s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07/02/2025, 21:40

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General

Target

2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe
Size

12.6MB
MD5

f3bfee5d07fb5cc641baddd6de1c218f
SHA1

3eb2d4fd3784dc3769a6a536ea96a0996752f851
SHA256

2ec2ed3e9c0dea7bdd9376559a577b13c1f84a06c158cbe2b7aae4c6ac3f6022
SHA512

0e1a5e887f0f436b3bd019a8c3344930dfa313153f88a7463b202270699581b70884a70c5cd8397fe40929b557757fadbd714315d945611bba0b1d89f6ffd91b
SSDEEP

24576:cEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZF:Zfot

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\idzuwsay = "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
3044	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\idzuwsay\ImagePath = "C:\\Windows\\SysWOW64\\idzuwsay\\wrvndoqo.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	wrvndoqo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 2800	2660	wrvndoqo.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2724	sc.exe
1576	sc.exe
3052	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	wrvndoqo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 2560	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	31
PID 2544 wrote to memory of 2560	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	31
PID 2544 wrote to memory of 2560	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	31
PID 2544 wrote to memory of 2560	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	31
PID 2544 wrote to memory of 588	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	33
PID 2544 wrote to memory of 588	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	33
PID 2544 wrote to memory of 588	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	33
PID 2544 wrote to memory of 588	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	33
PID 2544 wrote to memory of 2724	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	35
PID 2544 wrote to memory of 2724	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	35
PID 2544 wrote to memory of 2724	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	35
PID 2544 wrote to memory of 2724	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	35
PID 2544 wrote to memory of 1576	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	37
PID 2544 wrote to memory of 1576	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	37
PID 2544 wrote to memory of 1576	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	37
PID 2544 wrote to memory of 1576	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	37
PID 2544 wrote to memory of 3052	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	39
PID 2544 wrote to memory of 3052	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	39
PID 2544 wrote to memory of 3052	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	39
PID 2544 wrote to memory of 3052	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	39
PID 2544 wrote to memory of 3044	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	41
PID 2544 wrote to memory of 3044	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	41
PID 2544 wrote to memory of 3044	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	41
PID 2544 wrote to memory of 3044	2544	2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe	41
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44
PID 2660 wrote to memory of 2800	2660	wrvndoqo.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\idzuwsay\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wrvndoqo.exe" C:\Windows\SysWOW64\idzuwsay\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create idzuwsay binPath= "C:\Windows\SysWOW64\idzuwsay\wrvndoqo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description idzuwsay "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start idzuwsay
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- 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:3044

C:\Windows\SysWOW64\idzuwsay\wrvndoqo.exe
C:\Windows\SysWOW64\idzuwsay\wrvndoqo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_f3bfee5d07fb5cc641baddd6de1c218f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- 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:2800

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\wrvndoqo.exe

Filesize
12.5MB

MD5
48d8f7b519f6a33a97d6ed4965138e59

SHA1
4cb8c44e4a78067fd2f2e6f4c4cf00993b94f735

SHA256
5027d01749f15310281eee7881e8c14ba9882d38be4a24910b83f6c7c17b3555

SHA512
4e0f91c38af4bf3fd73736e2765110b80dae819e38c379dd8e4bff7d9ba262dc1b405915716a72c7c60fd36855552b399baf71dc0cc6a5b636fc293564ae78de

Download Submit
memory/2544-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2544-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2544-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2544-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2544-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2660-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2800-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads