tofsee | a737bd18b9e6f84a049a7a74b4e746729bf8a60caba2267d86f468ee20a7409d

General

Target

2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe
Size

11.1MB
MD5

0b402788ae36bf573d6e69354c37f310
SHA1

7e6265eebfb3fda97e75837d6376fa1386e603b8
SHA256

a737bd18b9e6f84a049a7a74b4e746729bf8a60caba2267d86f468ee20a7409d
SHA512

dd68e8e92ebc8a955149c539df14e4b34276b51c7a1df8233a0a7923a3ac565417dbdf0b0e834ad62198382349dfa23e66994fcf641fea8f8c09f19917ce67e8
SSDEEP

6144:cLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQG:RTYe+D2jFu+iZoUFhAzH

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
4836	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\vlnorytm\ImagePath = "C:\\Windows\\SysWOW64\\vlnorytm\\joytnzwy.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe

Deletes itself 1 IoCs

pid	Process
4296	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2064	joytnzwy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2064 set thread context of 4296	2064	joytnzwy.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4052	sc.exe
1028	sc.exe
1912	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2056	1004	WerFault.exe	81
4684	2064	WerFault.exe	92

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	2025-02-05_0b402788ae36bf573d6e69354c37f310_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	joytnzwy.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 3112	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	82
PID 1004 wrote to memory of 3112	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	82
PID 1004 wrote to memory of 3112	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	82
PID 1004 wrote to memory of 2928	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	84
PID 1004 wrote to memory of 2928	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	84
PID 1004 wrote to memory of 2928	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	84
PID 1004 wrote to memory of 4052	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	86
PID 1004 wrote to memory of 4052	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	86
PID 1004 wrote to memory of 4052	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	86
PID 1004 wrote to memory of 1028	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	88
PID 1004 wrote to memory of 1028	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	88
PID 1004 wrote to memory of 1028	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	88
PID 1004 wrote to memory of 1912	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	90
PID 1004 wrote to memory of 1912	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	90
PID 1004 wrote to memory of 1912	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	90
PID 1004 wrote to memory of 4836	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	93
PID 1004 wrote to memory of 4836	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	93
PID 1004 wrote to memory of 4836	1004	2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe	93
PID 2064 wrote to memory of 4296	2064	joytnzwy.exe	98
PID 2064 wrote to memory of 4296	2064	joytnzwy.exe	98
PID 2064 wrote to memory of 4296	2064	joytnzwy.exe	98
PID 2064 wrote to memory of 4296	2064	joytnzwy.exe	98
PID 2064 wrote to memory of 4296	2064	joytnzwy.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vlnorytm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\joytnzwy.exe" C:\Windows\SysWOW64\vlnorytm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vlnorytm binPath= "C:\Windows\SysWOW64\vlnorytm\joytnzwy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vlnorytm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vlnorytm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- 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:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 1248
  2⤵
  - Program crash
  PID:2056

C:\Windows\SysWOW64\vlnorytm\joytnzwy.exe
C:\Windows\SysWOW64\vlnorytm\joytnzwy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-05_0b402788ae36bf573d6e69354c37f310_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2064 -s 512
  2⤵
  - Program crash
  PID:4684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1004 -ip 1004
1⤵
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2064 -ip 2064
1⤵
PID:1524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\joytnzwy.exe

Filesize
14.6MB

MD5
2959525b8de1ae222bb71948521ad2ab

SHA1
dc01498a17ef892120b6b73c53358678a0f913d7

SHA256
b4c21730003f7f5fae837e5a6689a39a8fe54927975fe69311b6e2413f8419da

SHA512
8fedd28c2347662b3b9bf5121010d59ec30af3ea2bc189cbdc89f3dc347445d41df93849946b486c2df16d4c2f21e4ba50b9d89e60b2bb0ce2a7f55844fbae1b

Download Submit
memory/1004-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1004-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1004-2-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/1004-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1004-8-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/1004-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/2064-11-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2064-12-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2064-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2064-18-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4296-14-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4296-16-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4296-17-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads