tofsee | 7aa6819ead4765d06745e1033f7357a08548aa0f7a9aa1601c6707a3e1289b31

General

Target

2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe
Size

11.2MB
MD5

337a81b8a925f371beda4458d0403d00
SHA1

44611868d20d1fb4f280e9cd57188e17d392c72f
SHA256

7aa6819ead4765d06745e1033f7357a08548aa0f7a9aa1601c6707a3e1289b31
SHA512

ff42df78d4bc6c4821c822de6ad399d7062545bb7d2f6b8639f8643d1392c752b1e7b07358cf97a18fb9c7573d78d60074b4581d5d498c41d45f3ea47648054d
SSDEEP

196608:0yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX4:JXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXo

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
1416	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\lcbjodff\ImagePath = "C:\\Windows\\SysWOW64\\lcbjodff\\dfyjqymc.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe

Deletes itself 1 IoCs

pid	Process
4660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	dfyjqymc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 4660	2696	dfyjqymc.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
456	sc.exe
592	sc.exe
3624	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfyjqymc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 552	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	82
PID 2240 wrote to memory of 552	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	82
PID 2240 wrote to memory of 552	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	82
PID 2240 wrote to memory of 1876	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	84
PID 2240 wrote to memory of 1876	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	84
PID 2240 wrote to memory of 1876	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	84
PID 2240 wrote to memory of 456	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	86
PID 2240 wrote to memory of 456	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	86
PID 2240 wrote to memory of 456	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	86
PID 2240 wrote to memory of 592	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	88
PID 2240 wrote to memory of 592	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	88
PID 2240 wrote to memory of 592	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	88
PID 2240 wrote to memory of 3624	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	90
PID 2240 wrote to memory of 3624	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	90
PID 2240 wrote to memory of 3624	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	90
PID 2696 wrote to memory of 4660	2696	dfyjqymc.exe	93
PID 2696 wrote to memory of 4660	2696	dfyjqymc.exe	93
PID 2696 wrote to memory of 4660	2696	dfyjqymc.exe	93
PID 2696 wrote to memory of 4660	2696	dfyjqymc.exe	93
PID 2696 wrote to memory of 4660	2696	dfyjqymc.exe	93
PID 2240 wrote to memory of 1416	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	94
PID 2240 wrote to memory of 1416	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	94
PID 2240 wrote to memory of 1416	2240	2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lcbjodff\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dfyjqymc.exe" C:\Windows\SysWOW64\lcbjodff\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lcbjodff binPath= "C:\Windows\SysWOW64\lcbjodff\dfyjqymc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lcbjodff "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lcbjodff
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3624
- 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:1416

C:\Windows\SysWOW64\lcbjodff\dfyjqymc.exe
C:\Windows\SysWOW64\lcbjodff\dfyjqymc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_337a81b8a925f371beda4458d0403d00_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4660

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\dfyjqymc.exe

Filesize
10.6MB

MD5
563e626b55a592fb158597bbbe670918

SHA1
3f860a3af48abd2172bfa73b44cc8e286be5b759

SHA256
956f60d767b44203102acde29e1ee8180033419465b7485eaa11c19270614f08

SHA512
5f51b2b72f97e6dc26805b711bdbbd32978e91beb1e622a4c0a15c9b8e23cc248d7c76b61d7f9921d0fb62ced7559d050a657cb8d7b7453a9bd590cf1318776d

Download Submit
memory/2240-16-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2240-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-1-0x0000000000740000-0x0000000000840000-memory.dmp

Filesize
1024KB

Download
memory/2240-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2696-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2696-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4660-9-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4660-14-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4660-18-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4660-19-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4660-20-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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