tofsee | 8ca0c45c5ad2a3699ddfd096c361372a5a8a76ccb1303c51ba6dd03f21541fde

General

Target

2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe
Size

11.5MB
MD5

49340c3d7ab1f049b2399e5733052382
SHA1

6ebbae3f19bc5219e9f534f90b45acd05cd34715
SHA256

8ca0c45c5ad2a3699ddfd096c361372a5a8a76ccb1303c51ba6dd03f21541fde
SHA512

1b192462ce35161b2285123c1c9177ac16e5b967f53dd90d750d8ba2f287f0b2555355a4f9fa6ff5cc570bb6a57db7116175886ecab426a59fec27d1fadc3baf
SSDEEP

24576:t6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQn:cWdLQk

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
1640	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\eoglkoia\ImagePath = "C:\\Windows\\SysWOW64\\eoglkoia\\pnwxgcrn.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1932	pnwxgcrn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1932 set thread context of 2800	1932	pnwxgcrn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3428	sc.exe
3684	sc.exe
3640	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
3736	2416	WerFault.exe	81
3268	1932	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	cmd.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_49340c3d7ab1f049b2399e5733052382_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	pnwxgcrn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 1300	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	82
PID 2416 wrote to memory of 1300	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	82
PID 2416 wrote to memory of 1300	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	82
PID 2416 wrote to memory of 4496	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	84
PID 2416 wrote to memory of 4496	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	84
PID 2416 wrote to memory of 4496	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	84
PID 2416 wrote to memory of 3428	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	86
PID 2416 wrote to memory of 3428	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	86
PID 2416 wrote to memory of 3428	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	86
PID 2416 wrote to memory of 3684	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	88
PID 2416 wrote to memory of 3684	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	88
PID 2416 wrote to memory of 3684	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	88
PID 2416 wrote to memory of 3640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	90
PID 2416 wrote to memory of 3640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	90
PID 2416 wrote to memory of 3640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	90
PID 2416 wrote to memory of 1640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	93
PID 2416 wrote to memory of 1640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	93
PID 2416 wrote to memory of 1640	2416	2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe	93
PID 1932 wrote to memory of 2800	1932	pnwxgcrn.exe	98
PID 1932 wrote to memory of 2800	1932	pnwxgcrn.exe	98
PID 1932 wrote to memory of 2800	1932	pnwxgcrn.exe	98
PID 1932 wrote to memory of 2800	1932	pnwxgcrn.exe	98
PID 1932 wrote to memory of 2800	1932	pnwxgcrn.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eoglkoia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnwxgcrn.exe" C:\Windows\SysWOW64\eoglkoia\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eoglkoia binPath= "C:\Windows\SysWOW64\eoglkoia\pnwxgcrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eoglkoia "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eoglkoia
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3640
- 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:1640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2416 -s 648
  2⤵
  - Program crash
  PID:3736

C:\Windows\SysWOW64\eoglkoia\pnwxgcrn.exe
C:\Windows\SysWOW64\eoglkoia\pnwxgcrn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_49340c3d7ab1f049b2399e5733052382_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1932 -s 508
  2⤵
  - Program crash
  PID:3268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2416 -ip 2416
1⤵
PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1932 -ip 1932
1⤵
PID:1768

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\pnwxgcrn.exe

Filesize
12.7MB

MD5
6775ac32aad59feec6fdad0d900f96e1

SHA1
0328f7516265a1fff0a2bf505f3e216a9e485b12

SHA256
8bfbef801dc12d730a7e4264259a16f31054d36011fd7d0f9b7a3357ae540d74

SHA512
88ab03a342757b2e6336269d4a021b3b7db1011534b1680919eabc30fe54922b8220663798381ddc5f89b766b512a0ac475af810e2dd186bf50ecebde030528b

Download Submit
memory/1932-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1932-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1932-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1932-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2416-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2416-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2416-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2416-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2416-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2416-1-0x00000000006B0000-0x00000000007B0000-memory.dmp

Filesize
1024KB

Download
memory/2800-14-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2800-16-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2800-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads