tofsee | ced00835d536060975749bfebb25bfca9d08d45bfc06d595de150dbdaea64674

General

Target

2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe
Size

10.5MB
MD5

499ec0d0f85f08974c8bf8c604165ecd
SHA1

b1a3a843bfcc6eb7a29c8b53d74e3af33e44300b
SHA256

ced00835d536060975749bfebb25bfca9d08d45bfc06d595de150dbdaea64674
SHA512

987db712d1785a44185e49df6812509cc890f4d36c6ad4eae24e57426e06b621a54d61bb3b81741cf6e85727e59f66afc413cabaa54ac946b37b5de158daf215
SSDEEP

24576:6EfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZJ:Tfot

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
3444	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\lgfeqiui\ImagePath = "C:\\Windows\\SysWOW64\\lgfeqiui\\avzrhsus.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe

Deletes itself 1 IoCs

pid	Process
3812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4148	avzrhsus.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4148 set thread context of 3812	4148	avzrhsus.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4352	sc.exe
3344	sc.exe
1368	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
2732	3380	WerFault.exe	82
588	4148	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	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	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_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	avzrhsus.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3380 wrote to memory of 2984	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	86
PID 3380 wrote to memory of 2984	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	86
PID 3380 wrote to memory of 2984	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	86
PID 3380 wrote to memory of 4596	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	88
PID 3380 wrote to memory of 4596	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	88
PID 3380 wrote to memory of 4596	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	88
PID 3380 wrote to memory of 4352	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	90
PID 3380 wrote to memory of 4352	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	90
PID 3380 wrote to memory of 4352	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	90
PID 3380 wrote to memory of 3344	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	92
PID 3380 wrote to memory of 3344	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	92
PID 3380 wrote to memory of 3344	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	92
PID 3380 wrote to memory of 1368	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	94
PID 3380 wrote to memory of 1368	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	94
PID 3380 wrote to memory of 1368	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	94
PID 3380 wrote to memory of 3444	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	97
PID 3380 wrote to memory of 3444	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	97
PID 3380 wrote to memory of 3444	3380	2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe	97
PID 4148 wrote to memory of 3812	4148	avzrhsus.exe	102
PID 4148 wrote to memory of 3812	4148	avzrhsus.exe	102
PID 4148 wrote to memory of 3812	4148	avzrhsus.exe	102
PID 4148 wrote to memory of 3812	4148	avzrhsus.exe	102
PID 4148 wrote to memory of 3812	4148	avzrhsus.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lgfeqiui\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\avzrhsus.exe" C:\Windows\SysWOW64\lgfeqiui\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lgfeqiui binPath= "C:\Windows\SysWOW64\lgfeqiui\avzrhsus.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lgfeqiui "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lgfeqiui
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1368
- 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:3444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3380 -s 1036
  2⤵
  - Program crash
  PID:2732

C:\Windows\SysWOW64\lgfeqiui\avzrhsus.exe
C:\Windows\SysWOW64\lgfeqiui\avzrhsus.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_499ec0d0f85f08974c8bf8c604165ecd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4148 -s 512
  2⤵
  - Program crash
  PID:588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3380 -ip 3380
1⤵
PID:2892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4148 -ip 4148
1⤵
PID:2312

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\avzrhsus.exe

Filesize
11.6MB

MD5
05b06e5a371af648be9408a38315adaa

SHA1
cca46f6176b0533d7fcc4955d87f29533b50d355

SHA256
3ee3e056d20caf72d3b02b27f932297fb6425cb97e1859493a495b916e8bfffd

SHA512
312969090454b50835d1565606809c8e1a6bb66bf3473f34c981f6a3fd45f2b0e58b549dce58bea5f16db288e0f57bbd6540d9096a81f7ce747461de8b50bd58

Download Submit
memory/3380-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3380-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3380-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/3380-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3380-8-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/3380-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3812-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3812-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3812-17-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/4148-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4148-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4148-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4148-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads