tofsee | bb393cf9bbb120a19a336bd850f23d92d0cca7aa70556d8f27cbdd64f2cef23e

General

Target

2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe
Size

10.4MB
MD5

f41889aa43d1fcdf7f1f7547f53b2bd3
SHA1

1e13ed50aec8bb2bd2b129135ff85043fabe4f92
SHA256

bb393cf9bbb120a19a336bd850f23d92d0cca7aa70556d8f27cbdd64f2cef23e
SHA512

c53bbf159ce09f67b0802b2f0b175331dcbaa47005b859f7f409df65ff6b03c167446b781f7ba40e0b21cb4c45178c96580efd09f931d1807460a8e823f2dfc3
SSDEEP

24576:96WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ:sWdLQk

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
620	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\ijxozaa\ImagePath = "C:\\Windows\\SysWOW64\\ijxozaa\\aixbomvv.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_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe

Deletes itself 1 IoCs

pid	Process
3592	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
456	aixbomvv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 3592	456	aixbomvv.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4796	sc.exe
5084	sc.exe
3344	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
1792	3380	WerFault.exe	82
640	456	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aixbomvv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3380 wrote to memory of 8	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	86
PID 3380 wrote to memory of 8	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	86
PID 3380 wrote to memory of 8	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	86
PID 3380 wrote to memory of 3052	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	88
PID 3380 wrote to memory of 3052	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	88
PID 3380 wrote to memory of 3052	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	88
PID 3380 wrote to memory of 4796	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	90
PID 3380 wrote to memory of 4796	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	90
PID 3380 wrote to memory of 4796	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	90
PID 3380 wrote to memory of 5084	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	92
PID 3380 wrote to memory of 5084	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	92
PID 3380 wrote to memory of 5084	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	92
PID 3380 wrote to memory of 3344	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	94
PID 3380 wrote to memory of 3344	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	94
PID 3380 wrote to memory of 3344	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	94
PID 3380 wrote to memory of 620	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	97
PID 3380 wrote to memory of 620	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	97
PID 3380 wrote to memory of 620	3380	2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe	97
PID 456 wrote to memory of 3592	456	aixbomvv.exe	102
PID 456 wrote to memory of 3592	456	aixbomvv.exe	102
PID 456 wrote to memory of 3592	456	aixbomvv.exe	102
PID 456 wrote to memory of 3592	456	aixbomvv.exe	102
PID 456 wrote to memory of 3592	456	aixbomvv.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_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\ijxozaa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:8
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aixbomvv.exe" C:\Windows\SysWOW64\ijxozaa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ijxozaa binPath= "C:\Windows\SysWOW64\ijxozaa\aixbomvv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ijxozaa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ijxozaa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3344
- 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:620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3380 -s 1036
  2⤵
  - Program crash
  PID:1792

C:\Windows\SysWOW64\ijxozaa\aixbomvv.exe
C:\Windows\SysWOW64\ijxozaa\aixbomvv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_f41889aa43d1fcdf7f1f7547f53b2bd3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 456 -s 512
  2⤵
  - Program crash
  PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3380 -ip 3380
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 456 -ip 456
1⤵
PID:3720

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\aixbomvv.exe

Filesize
14.0MB

MD5
f4c47992b93a0817c0e9749946cc3e35

SHA1
1a89ba37fabf3acd8d7103c22653a32edc9df703

SHA256
c7ba1b99cc5384f55a0eef8e3c0d5d81cff99be34729b66823c1bb8a4ef38e3a

SHA512
e23d6c3f60be11e0cc59f448c66b3271ebf881d66ebd43c24d1220191297865830ff81505706a07c9b616fc12cdff6a15c92b2e7cedb3ad6b12a5afbd2e0f8bd

Download Submit
memory/456-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/456-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/456-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/456-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

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

Filesize
84KB

Download
memory/3380-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

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

Filesize
84KB

Download
memory/3380-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3380-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3380-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download
memory/3592-14-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/3592-16-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/3592-17-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads