tofsee | 63137cdddc2ff91ad9e6cb6a984f4f7c603d9ba3d9a8d53a84ef480beb8d806d

General

Target

2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe
Size

13.6MB
MD5

de2d2486fa030da748bd90749b55beea
SHA1

d439a2be1ec1b9aa7b21c37c0bf79d41c7e82794
SHA256

63137cdddc2ff91ad9e6cb6a984f4f7c603d9ba3d9a8d53a84ef480beb8d806d
SHA512

acf15f48ace4f71173ec7a03a6e80103eefed529709e6144cc0ce3f58b3ed7e601744e1af6bb27e235d9d53d69ca55cf60a6fbb2f37121bcf5442fc6d50173e9
SSDEEP

24576:upomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:Coo

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
4628	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\hfljetff\ImagePath = "C:\\Windows\\SysWOW64\\hfljetff\\vxsyreo.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe

Deletes itself 1 IoCs

pid	Process
804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2308	vxsyreo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2308 set thread context of 804	2308	vxsyreo.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
5080	sc.exe
3908	sc.exe
640	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
772	3544	WerFault.exe	82
5040	2308	WerFault.exe	99

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	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.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	vxsyreo.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3544 wrote to memory of 3044	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	84
PID 3544 wrote to memory of 3044	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	84
PID 3544 wrote to memory of 3044	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	84
PID 3544 wrote to memory of 4060	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	86
PID 3544 wrote to memory of 4060	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	86
PID 3544 wrote to memory of 4060	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	86
PID 3544 wrote to memory of 3908	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	88
PID 3544 wrote to memory of 3908	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	88
PID 3544 wrote to memory of 3908	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	88
PID 3544 wrote to memory of 640	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	92
PID 3544 wrote to memory of 640	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	92
PID 3544 wrote to memory of 640	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	92
PID 3544 wrote to memory of 5080	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	95
PID 3544 wrote to memory of 5080	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	95
PID 3544 wrote to memory of 5080	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	95
PID 3544 wrote to memory of 4628	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	100
PID 3544 wrote to memory of 4628	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	100
PID 3544 wrote to memory of 4628	3544	2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe	100
PID 2308 wrote to memory of 804	2308	vxsyreo.exe	108
PID 2308 wrote to memory of 804	2308	vxsyreo.exe	108
PID 2308 wrote to memory of 804	2308	vxsyreo.exe	108
PID 2308 wrote to memory of 804	2308	vxsyreo.exe	108
PID 2308 wrote to memory of 804	2308	vxsyreo.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hfljetff\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vxsyreo.exe" C:\Windows\SysWOW64\hfljetff\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hfljetff binPath= "C:\Windows\SysWOW64\hfljetff\vxsyreo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hfljetff "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hfljetff
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5080
- 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:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3544 -s 1244
  2⤵
  - Program crash
  PID:772

C:\Windows\SysWOW64\hfljetff\vxsyreo.exe
C:\Windows\SysWOW64\hfljetff\vxsyreo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_de2d2486fa030da748bd90749b55beea_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2308 -s 508
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3544 -ip 3544
1⤵
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2308 -ip 2308
1⤵
PID:1432

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\vxsyreo.exe

Filesize
13.5MB

MD5
183288740a5fd17250e583ed876a7fbc

SHA1
229f1fe6473392a73d9c0f7ad7ed25bf5534d0d4

SHA256
75e88e22172caa443ecdaef06a7cf50e6f26fe433a0d5c8db8695e942a12c694

SHA512
a93c36b360abe8ccdd870c79882cf01b062c63ca994534e5592b25d899f88b0e11e5f818df5d97f2cf794cee15c972f562c8aeeac405ac3e0dca1603d2268cfa

Download Submit
memory/804-14-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/804-17-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/804-16-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/2308-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2308-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2308-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2308-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3544-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3544-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3544-1-0x00000000006B0000-0x00000000007B0000-memory.dmp

Filesize
1024KB

Download
memory/3544-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3544-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads