tofsee | 30ecd6f613c2259348422d6167f34c01a5374d978d512b84f2a64e94d1b10d8e

General

Target

2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe
Size

14.5MB
MD5

0e117629bea7310213e5299e6d8522f7
SHA1

3d7d2008bd81f8714c1af2954ac7586e0fb87023
SHA256

30ecd6f613c2259348422d6167f34c01a5374d978d512b84f2a64e94d1b10d8e
SHA512

b136cba73db8d878ee01528117519371d55c284e592d025f6b3e05b8589fa2e5ba9568d8711fc28182c4575b23629470eeee4143b9edd385dc77f93a13f53a69
SSDEEP

24576:bpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttf:too

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
2968	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\xlydbdsq\ImagePath = "C:\\Windows\\SysWOW64\\xlydbdsq\\oopavwuc.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe

Deletes itself 1 IoCs

pid	Process
1048	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
920	oopavwuc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 920 set thread context of 1048	920	oopavwuc.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3608	sc.exe
5040	sc.exe
3076	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3412	3764	WerFault.exe	83
4524	920	WerFault.exe	96

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	2025-01-31_0e117629bea7310213e5299e6d8522f7_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	netsh.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oopavwuc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 2564	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	86
PID 3764 wrote to memory of 2564	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	86
PID 3764 wrote to memory of 2564	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	86
PID 3764 wrote to memory of 3804	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	88
PID 3764 wrote to memory of 3804	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	88
PID 3764 wrote to memory of 3804	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	88
PID 3764 wrote to memory of 3608	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	90
PID 3764 wrote to memory of 3608	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	90
PID 3764 wrote to memory of 3608	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	90
PID 3764 wrote to memory of 5040	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	92
PID 3764 wrote to memory of 5040	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	92
PID 3764 wrote to memory of 5040	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	92
PID 3764 wrote to memory of 3076	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	94
PID 3764 wrote to memory of 3076	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	94
PID 3764 wrote to memory of 3076	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	94
PID 3764 wrote to memory of 2968	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	97
PID 3764 wrote to memory of 2968	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	97
PID 3764 wrote to memory of 2968	3764	2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe	97
PID 920 wrote to memory of 1048	920	oopavwuc.exe	102
PID 920 wrote to memory of 1048	920	oopavwuc.exe	102
PID 920 wrote to memory of 1048	920	oopavwuc.exe	102
PID 920 wrote to memory of 1048	920	oopavwuc.exe	102
PID 920 wrote to memory of 1048	920	oopavwuc.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xlydbdsq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oopavwuc.exe" C:\Windows\SysWOW64\xlydbdsq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xlydbdsq binPath= "C:\Windows\SysWOW64\xlydbdsq\oopavwuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xlydbdsq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xlydbdsq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3076
- 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:2968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1036
  2⤵
  - Program crash
  PID:3412

C:\Windows\SysWOW64\xlydbdsq\oopavwuc.exe
C:\Windows\SysWOW64\xlydbdsq\oopavwuc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_0e117629bea7310213e5299e6d8522f7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 920 -s 508
  2⤵
  - Program crash
  PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3764 -ip 3764
1⤵
PID:1460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 920 -ip 920
1⤵
PID:1532

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\oopavwuc.exe

Filesize
10.9MB

MD5
13fff02eb3a8633d31fac9a1dfdfb04d

SHA1
5c773d1c40f0dcceb5a844424a7c5f0c1a1122f4

SHA256
ce55adb8682954027a33b4aa2b0785bff3c439d93fdd0c170875d8c641a0cc3d

SHA512
44863236c43ae881b3d7f2ef34016e724e6b820653a391b90cf4669ed9dec2faa4e47bec7f91c84f7d6d000c1bfeabc61b20433b4482fb3f75621b7a4e7e0d3e

Download Submit
memory/920-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/920-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/920-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/920-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1048-14-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/1048-16-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/1048-18-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/3764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3764-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/3764-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3764-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/3764-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3764-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads