tofsee | 67167d788f5243da7e44ebfd327ea53e9ce6df446c0cf87d2436fbfea64196bd

General

Target

2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe
Size

12.4MB
MD5

21981ec84a389fba811b1444fc514d74
SHA1

d7642bbb25ff9a612b318289845a1c959541a2b4
SHA256

67167d788f5243da7e44ebfd327ea53e9ce6df446c0cf87d2436fbfea64196bd
SHA512

84d5249d655dda69d87fa35e724cbde17e29a8b05109b5ff82e3b0638ef2087cc83cd9d236315642791a09f6021ae85b58c7979a77a4ef5a18861dd23dac89c0
SSDEEP

24576:bpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttt:too

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4304	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\yjhnttst\ImagePath = "C:\\Windows\\SysWOW64\\yjhnttst\\kntncnye.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	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe

Deletes itself 1 IoCs

pid	Process
4716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1892	kntncnye.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1892 set thread context of 4716	1892	kntncnye.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3256	sc.exe
3756	sc.exe
4168	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
3268	5100	WerFault.exe	83
3540	1892	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kntncnye.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 768	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	84
PID 5100 wrote to memory of 768	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	84
PID 5100 wrote to memory of 768	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	84
PID 5100 wrote to memory of 3488	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	86
PID 5100 wrote to memory of 3488	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	86
PID 5100 wrote to memory of 3488	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	86
PID 5100 wrote to memory of 3256	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	88
PID 5100 wrote to memory of 3256	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	88
PID 5100 wrote to memory of 3256	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	88
PID 5100 wrote to memory of 3756	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	90
PID 5100 wrote to memory of 3756	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	90
PID 5100 wrote to memory of 3756	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	90
PID 5100 wrote to memory of 4168	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	92
PID 5100 wrote to memory of 4168	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	92
PID 5100 wrote to memory of 4168	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	92
PID 5100 wrote to memory of 4304	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	95
PID 5100 wrote to memory of 4304	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	95
PID 5100 wrote to memory of 4304	5100	2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe	95
PID 1892 wrote to memory of 4716	1892	kntncnye.exe	100
PID 1892 wrote to memory of 4716	1892	kntncnye.exe	100
PID 1892 wrote to memory of 4716	1892	kntncnye.exe	100
PID 1892 wrote to memory of 4716	1892	kntncnye.exe	100
PID 1892 wrote to memory of 4716	1892	kntncnye.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yjhnttst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kntncnye.exe" C:\Windows\SysWOW64\yjhnttst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yjhnttst binPath= "C:\Windows\SysWOW64\yjhnttst\kntncnye.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yjhnttst "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yjhnttst
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4168
- 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:4304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5100 -s 1188
  2⤵
  - Program crash
  PID:3268

C:\Windows\SysWOW64\yjhnttst\kntncnye.exe
C:\Windows\SysWOW64\yjhnttst\kntncnye.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_21981ec84a389fba811b1444fc514d74_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1892 -s 516
  2⤵
  - Program crash
  PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5100 -ip 5100
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1892 -ip 1892
1⤵
PID:4328

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kntncnye.exe

Filesize
13.4MB

MD5
b56e9d86f76e43da5835b9257c117d4c

SHA1
dca80d898b290ecf6566a1becbb56d52ee9f813d

SHA256
fab78ac4c57e0d287a5e452c4749054e3df30c3031976429f36bcaf552dcecaf

SHA512
2ca40f29f32c99c903dcea3d34338cfdf59cebbab3dc59f194c68691702571d53b548574a9251865d05f1280de61e0204eefbec3f1faf925a2276b82f9a09869

Download Submit
memory/1892-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1892-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1892-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1892-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4716-14-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4716-16-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/4716-17-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/5100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/5100-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5100-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-8-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/5100-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads