tofsee | 3d2272265667eadf95c4998225f5ace4d9ef3afc0994de38319ac123c672a9df

General

Target

2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe
Size

11.3MB
MD5

7e811bc48a3afad994b009290155bd03
SHA1

d24e61a923e21d81f8e555ac0d7b3d7341177609
SHA256

3d2272265667eadf95c4998225f5ace4d9ef3afc0994de38319ac123c672a9df
SHA512

416378350a3546622bbc8b88095845016f58abe386c0a5288a8120ee938b96ea8353f488ea11f037e1f9ddde51fd795820a9835730bef66ff4ceee1d152b7d18
SSDEEP

49152:aqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:aqtYc3

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
1972	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\jjbvomez\ImagePath = "C:\\Windows\\SysWOW64\\jjbvomez\\uthjxuvn.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe

Deletes itself 1 IoCs

pid	Process
4320	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1820	uthjxuvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 4320	1820	uthjxuvn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3516	sc.exe
3912	sc.exe
4428	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1624	2236	WerFault.exe	81
2384	1820	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	cmd.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	2025-01-26_7e811bc48a3afad994b009290155bd03_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	uthjxuvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2200	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	82
PID 2236 wrote to memory of 2200	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	82
PID 2236 wrote to memory of 2200	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	82
PID 2236 wrote to memory of 3172	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	84
PID 2236 wrote to memory of 3172	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	84
PID 2236 wrote to memory of 3172	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	84
PID 2236 wrote to memory of 4428	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	86
PID 2236 wrote to memory of 4428	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	86
PID 2236 wrote to memory of 4428	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	86
PID 2236 wrote to memory of 3516	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	88
PID 2236 wrote to memory of 3516	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	88
PID 2236 wrote to memory of 3516	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	88
PID 2236 wrote to memory of 3912	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	90
PID 2236 wrote to memory of 3912	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	90
PID 2236 wrote to memory of 3912	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	90
PID 2236 wrote to memory of 1972	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	93
PID 2236 wrote to memory of 1972	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	93
PID 2236 wrote to memory of 1972	2236	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	93
PID 1820 wrote to memory of 4320	1820	uthjxuvn.exe	98
PID 1820 wrote to memory of 4320	1820	uthjxuvn.exe	98
PID 1820 wrote to memory of 4320	1820	uthjxuvn.exe	98
PID 1820 wrote to memory of 4320	1820	uthjxuvn.exe	98
PID 1820 wrote to memory of 4320	1820	uthjxuvn.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jjbvomez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uthjxuvn.exe" C:\Windows\SysWOW64\jjbvomez\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jjbvomez binPath= "C:\Windows\SysWOW64\jjbvomez\uthjxuvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jjbvomez "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jjbvomez
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3912
- 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:1972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 1384
  2⤵
  - Program crash
  PID:1624

C:\Windows\SysWOW64\jjbvomez\uthjxuvn.exe
C:\Windows\SysWOW64\jjbvomez\uthjxuvn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1820 -s 512
  2⤵
  - Program crash
  PID:2384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2236 -ip 2236
1⤵
PID:4012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1820 -ip 1820
1⤵
PID:1984

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\uthjxuvn.exe

Filesize
11.7MB

MD5
96ff259433e0be69761294f521e22f12

SHA1
923195cf987deaae3a7a1104f1d8609bd4a56733

SHA256
e978bf481b280693a6955453cf5d5cbc835706d17b97466bcfe032889054aed0

SHA512
b51359e229800ec59c92d0180d8d1bd9cc3f35728cb08e7359a9bb35ac1eef6c39b8c81cbb872050c179eb3494247ff8aae3ec6387402e692c13a6ddfc56671f

Download Submit
memory/1820-13-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2236-1-0x0000000002E40000-0x0000000002F40000-memory.dmp

Filesize
1024KB

Download
memory/2236-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2236-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2236-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2236-11-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2236-8-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4320-9-0x0000000000B80000-0x0000000000B95000-memory.dmp

Filesize
84KB

Download
memory/4320-14-0x0000000000B80000-0x0000000000B95000-memory.dmp

Filesize
84KB

Download
memory/4320-15-0x0000000000B80000-0x0000000000B95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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