tofsee | 2be71100003ab6289fedc5f0fe8bd605020c56ad24e4a3d1aad58634b2c259b9

General

Target

2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe
Size

10.4MB
MD5

04e437967a97228b8a21dc2a0c069a00
SHA1

3636d55251c0953be05d9f02897352f7f43f7a9f
SHA256

2be71100003ab6289fedc5f0fe8bd605020c56ad24e4a3d1aad58634b2c259b9
SHA512

4729d9fc7c432805ba60d98ffafe2663f4f92ae84e18291e001fe783148c22ec6692bfd747f6520e8c4837cd23d353780fef6200dad8152d2f4243c43084c59c
SSDEEP

24576:IEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZS:FfotA

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
1352	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\zertyvax\ImagePath = "C:\\Windows\\SysWOW64\\zertyvax\\owlpcajj.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	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe

Deletes itself 1 IoCs

pid	Process
1784	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3396	owlpcajj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3396 set thread context of 1784	3396	owlpcajj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
364	sc.exe
708	sc.exe
3656	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
2584	4496	WerFault.exe	81
4084	3396	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	owlpcajj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_04e437967a97228b8a21dc2a0c069a00_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 3676	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	82
PID 4496 wrote to memory of 3676	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	82
PID 4496 wrote to memory of 3676	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	82
PID 4496 wrote to memory of 3480	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	84
PID 4496 wrote to memory of 3480	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	84
PID 4496 wrote to memory of 3480	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	84
PID 4496 wrote to memory of 3656	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	86
PID 4496 wrote to memory of 3656	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	86
PID 4496 wrote to memory of 3656	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	86
PID 4496 wrote to memory of 364	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	88
PID 4496 wrote to memory of 364	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	88
PID 4496 wrote to memory of 364	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	88
PID 4496 wrote to memory of 708	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	90
PID 4496 wrote to memory of 708	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	90
PID 4496 wrote to memory of 708	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	90
PID 4496 wrote to memory of 1352	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	93
PID 4496 wrote to memory of 1352	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	93
PID 4496 wrote to memory of 1352	4496	2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe	93
PID 3396 wrote to memory of 1784	3396	owlpcajj.exe	98
PID 3396 wrote to memory of 1784	3396	owlpcajj.exe	98
PID 3396 wrote to memory of 1784	3396	owlpcajj.exe	98
PID 3396 wrote to memory of 1784	3396	owlpcajj.exe	98
PID 3396 wrote to memory of 1784	3396	owlpcajj.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zertyvax\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\owlpcajj.exe" C:\Windows\SysWOW64\zertyvax\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zertyvax binPath= "C:\Windows\SysWOW64\zertyvax\owlpcajj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zertyvax "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zertyvax
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:708
- 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:1352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 1396
  2⤵
  - Program crash
  PID:2584

C:\Windows\SysWOW64\zertyvax\owlpcajj.exe
C:\Windows\SysWOW64\zertyvax\owlpcajj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3396 -s 508
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4496 -ip 4496
1⤵
PID:2740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3396 -ip 3396
1⤵
PID:1228

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\owlpcajj.exe

Filesize
11.3MB

MD5
b1bdf052c687efb6e55d6d0f11c77443

SHA1
e6beb96ecd6e1ad9000a86ab9b2c41b21d7c24b7

SHA256
0db3eaeb645585859d210c340d62fa39940c62ca01c1c7dc79c886168c08a894

SHA512
6d83d4efca87c57acd19025f542950b1330c0e592f2e985bd4982b602bf275189f50d85dcf2304c41650eff031d4d1fe9eb63f892bb7f7620459a55aba6ba1cb

Download Submit
memory/1784-14-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/1784-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/1784-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3396-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3396-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3396-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3396-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4496-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4496-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4496-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/4496-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4496-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4496-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads