tofsee | 23be3499b2b9a7e01237488f80243a36b9be5d528a0ec85a717cd4b0104ddbe8

General

Target

2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe
Size

12.9MB
MD5

6a397c7bc04ae63117f5925e9b9fd54f
SHA1

940657256af629fa51b70bc05779ef0976c63637
SHA256

23be3499b2b9a7e01237488f80243a36b9be5d528a0ec85a717cd4b0104ddbe8
SHA512

4dfb4f3e74ed91757bed613051d5cca3ed2b844e0eb72aa074d8540c01711d18e6707c93d5245f0bc685a2f6b5c3f5af1b75b0df38298f79b3e39312260eac83
SSDEEP

24576:WEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:Pfot

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
4800	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\plwvwuwh\ImagePath = "C:\\Windows\\SysWOW64\\plwvwuwh\\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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe

Deletes itself 1 IoCs

pid	Process
4544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1816	kntncnye.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1816 set thread context of 4544	1816	kntncnye.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4008	sc.exe
5096	sc.exe
1648	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
2544	5040	WerFault.exe	81
3184	1816	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	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_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	kntncnye.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 2676	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	82
PID 5040 wrote to memory of 2676	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	82
PID 5040 wrote to memory of 2676	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	82
PID 5040 wrote to memory of 4748	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	84
PID 5040 wrote to memory of 4748	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	84
PID 5040 wrote to memory of 4748	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	84
PID 5040 wrote to memory of 5096	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	86
PID 5040 wrote to memory of 5096	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	86
PID 5040 wrote to memory of 5096	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	86
PID 5040 wrote to memory of 1648	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	88
PID 5040 wrote to memory of 1648	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	88
PID 5040 wrote to memory of 1648	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	88
PID 5040 wrote to memory of 4008	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	90
PID 5040 wrote to memory of 4008	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	90
PID 5040 wrote to memory of 4008	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	90
PID 5040 wrote to memory of 4800	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	93
PID 5040 wrote to memory of 4800	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	93
PID 5040 wrote to memory of 4800	5040	2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe	93
PID 1816 wrote to memory of 4544	1816	kntncnye.exe	102
PID 1816 wrote to memory of 4544	1816	kntncnye.exe	102
PID 1816 wrote to memory of 4544	1816	kntncnye.exe	102
PID 1816 wrote to memory of 4544	1816	kntncnye.exe	102
PID 1816 wrote to memory of 4544	1816	kntncnye.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\plwvwuwh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kntncnye.exe" C:\Windows\SysWOW64\plwvwuwh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create plwvwuwh binPath= "C:\Windows\SysWOW64\plwvwuwh\kntncnye.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description plwvwuwh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start plwvwuwh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4008
- 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:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5040 -s 1276
  2⤵
  - Program crash
  PID:2544

C:\Windows\SysWOW64\plwvwuwh\kntncnye.exe
C:\Windows\SysWOW64\plwvwuwh\kntncnye.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_6a397c7bc04ae63117f5925e9b9fd54f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 516
  2⤵
  - Program crash
  PID:3184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5040 -ip 5040
1⤵
PID:2336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1816 -ip 1816
1⤵
PID:4496

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\kntncnye.exe

Filesize
13.9MB

MD5
39f565a6b966e3ee5b6f28d309ad1d85

SHA1
e80d006b139b235b8795b6b25e5d6f1450419bfc

SHA256
ebdf592f2b3533ca1e527110deb0b7243f350d1b41641e53b9c7a40db374ec0f

SHA512
539d6db386fc37bba24683df5f8a4d4a26529266924bff275727d8de168135e16a9ae74af90cb15ecec843015a4be72cbe6348a1d0c441ba5c23c73bdcda46d4

Download Submit
memory/1816-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1816-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1816-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1816-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4544-16-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/4544-14-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/4544-17-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/5040-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5040-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5040-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5040-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5040-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5040-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads