tofsee | 4940b64d036adb8a281feeb4976cbf45c0e465ac4ee72f0c37a7a1e1ff56de2c

General

Target

2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe
Size

12.0MB
MD5

c637089ab54314c90986ec81a304e0dc
SHA1

014dc7831a4f8177e5fc23937859b89e0de2de6b
SHA256

4940b64d036adb8a281feeb4976cbf45c0e465ac4ee72f0c37a7a1e1ff56de2c
SHA512

914a2fdade109e75eefc435498d23a1a72f6b27ae146432bbab4c125f0d98429e9fb93982607714c2a9c011138c46d7d70188f4385fd684c1cd89a5cc82a1acd
SSDEEP

24576:MpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttd:ooo

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
5040	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\niyrtgud\ImagePath = "C:\\Windows\\SysWOW64\\niyrtgud\\ehnhwhsy.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe

Deletes itself 1 IoCs

pid	Process
1968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2460	ehnhwhsy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2460 set thread context of 1968	2460	ehnhwhsy.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3984	sc.exe
3104	sc.exe
3340	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
3848	3128	WerFault.exe	82
1092	2460	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ehnhwhsy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_c637089ab54314c90986ec81a304e0dc_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 1424	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	84
PID 3128 wrote to memory of 1424	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	84
PID 3128 wrote to memory of 1424	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	84
PID 3128 wrote to memory of 4964	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	86
PID 3128 wrote to memory of 4964	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	86
PID 3128 wrote to memory of 4964	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	86
PID 3128 wrote to memory of 3984	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	88
PID 3128 wrote to memory of 3984	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	88
PID 3128 wrote to memory of 3984	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	88
PID 3128 wrote to memory of 3104	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	90
PID 3128 wrote to memory of 3104	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	90
PID 3128 wrote to memory of 3104	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	90
PID 3128 wrote to memory of 3340	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	92
PID 3128 wrote to memory of 3340	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	92
PID 3128 wrote to memory of 3340	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	92
PID 3128 wrote to memory of 5040	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	95
PID 3128 wrote to memory of 5040	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	95
PID 3128 wrote to memory of 5040	3128	2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe	95
PID 2460 wrote to memory of 1968	2460	ehnhwhsy.exe	101
PID 2460 wrote to memory of 1968	2460	ehnhwhsy.exe	101
PID 2460 wrote to memory of 1968	2460	ehnhwhsy.exe	101
PID 2460 wrote to memory of 1968	2460	ehnhwhsy.exe	101
PID 2460 wrote to memory of 1968	2460	ehnhwhsy.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\niyrtgud\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehnhwhsy.exe" C:\Windows\SysWOW64\niyrtgud\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create niyrtgud binPath= "C:\Windows\SysWOW64\niyrtgud\ehnhwhsy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description niyrtgud "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start niyrtgud
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3340
- 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:5040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 580
  2⤵
  - Program crash
  PID:3848

C:\Windows\SysWOW64\niyrtgud\ehnhwhsy.exe
C:\Windows\SysWOW64\niyrtgud\ehnhwhsy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c637089ab54314c90986ec81a304e0dc_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2460 -s 508
  2⤵
  - Program crash
  PID:1092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3128 -ip 3128
1⤵
PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2460 -ip 2460
1⤵
PID:4116

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\ehnhwhsy.exe

Filesize
13.3MB

MD5
356fbbc1dfee5058d5443caa464171d4

SHA1
be83984e5c5f7da887f71262baaf94e1fc36f2e2

SHA256
f21bc125f038669cf71cdb32c2266200db11998e2afbf11c8e6546ee1552fb0c

SHA512
6fa6a0021f5528b91d7ff168e46a4c59f8acbd520d2ea4e7580d6ff1724bac4878b65543496e75d23163b6b35025c499ea0e1d51c523da3d0ff1b597e83ae72a

Download Submit
memory/1968-14-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download
memory/1968-17-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download
memory/1968-16-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download
memory/2460-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2460-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2460-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2460-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3128-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3128-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3128-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3128-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3128-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3128-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads