tofsee | 35bdb69421abb26baf673435fc3c3675ea6a3f58ebbf88a2e0f4b669f9b3d4b4

Analysis

max time kernel
143s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 11:27

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General

Target

2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe
Size

14.6MB
MD5

3636e5c97a13d71ac928ebc9953f2e42
SHA1

a2fd90570f9ba78949236d5b6fb54e34f5fedf11
SHA256

35bdb69421abb26baf673435fc3c3675ea6a3f58ebbf88a2e0f4b669f9b3d4b4
SHA512

fa2b2d0381fe3ed992a285f22b44c5df1f78bf12ef3120c7d8522bb347ec8af6c8f7b3e4a57f414d29e751d9a022d98c822b80cc6efd69d532eeb17f351cebf5
SSDEEP

24576:ZpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttX:Doo

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\wvjmvadq = "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
2120	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\wvjmvadq\ImagePath = "C:\\Windows\\SysWOW64\\wvjmvadq\\rrsdyzxf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3044	rrsdyzxf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3044 set thread context of 3060	3044	rrsdyzxf.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2920	sc.exe
1912	sc.exe
1812	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rrsdyzxf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_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 1628 wrote to memory of 2288	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	28
PID 1628 wrote to memory of 2288	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	28
PID 1628 wrote to memory of 2288	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	28
PID 1628 wrote to memory of 2288	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	28
PID 1628 wrote to memory of 1572	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	30
PID 1628 wrote to memory of 1572	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	30
PID 1628 wrote to memory of 1572	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	30
PID 1628 wrote to memory of 1572	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	30
PID 1628 wrote to memory of 1912	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	32
PID 1628 wrote to memory of 1912	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	32
PID 1628 wrote to memory of 1912	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	32
PID 1628 wrote to memory of 1912	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	32
PID 1628 wrote to memory of 1812	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	34
PID 1628 wrote to memory of 1812	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	34
PID 1628 wrote to memory of 1812	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	34
PID 1628 wrote to memory of 1812	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	34
PID 1628 wrote to memory of 2920	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	36
PID 1628 wrote to memory of 2920	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	36
PID 1628 wrote to memory of 2920	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	36
PID 1628 wrote to memory of 2920	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	36
PID 1628 wrote to memory of 2120	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	39
PID 1628 wrote to memory of 2120	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	39
PID 1628 wrote to memory of 2120	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	39
PID 1628 wrote to memory of 2120	1628	2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe	39
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41
PID 3044 wrote to memory of 3060	3044	rrsdyzxf.exe	41

C:\Users\Admin\AppData\Local\Temp\2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wvjmvadq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rrsdyzxf.exe" C:\Windows\SysWOW64\wvjmvadq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wvjmvadq binPath= "C:\Windows\SysWOW64\wvjmvadq\rrsdyzxf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wvjmvadq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wvjmvadq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- 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:2120

C:\Windows\SysWOW64\wvjmvadq\rrsdyzxf.exe
C:\Windows\SysWOW64\wvjmvadq\rrsdyzxf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-05_3636e5c97a13d71ac928ebc9953f2e42_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- 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:3060

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\rrsdyzxf.exe

Filesize
12.5MB

MD5
ec4574e4b9affaf3e5647edb20cb34e0

SHA1
ade3837feaa7a715bc5f1e86eae6f2ce8d8cdfae

SHA256
3f8293726ccad180b22a74b1dae003b4169632169ac4420febdf923e03dbd069

SHA512
58f8a715dbc677c97145a7ff2581be03eade0f3ce69f27e85bddbe8f8d0104dd66a1717cf3bcb21793e0c7fab0b04a4dcb3d79b0111010a809fc31e4b4f63be7

Download Submit
memory/1628-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1628-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1628-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1628-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1628-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1628-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/3044-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3060-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3060-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3060-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3060-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3060-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads