tofsee | 432fa98f61def37c7834351b857e1775a33a94de164b7f94ec7320716daf0fa0

General

Target

2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe
Size

14.1MB
MD5

0aa045fd7e868d2b897f7c7d49bd3da1
SHA1

3f32cac736e6fcc3ff4e9dbfbb2fabd1317d7fc2
SHA256

432fa98f61def37c7834351b857e1775a33a94de164b7f94ec7320716daf0fa0
SHA512

e25477ad497ccc470fd73a14d2212dad22c258f49e73b958baf0438b9e1b9e5f30027ce484dcb2534e582c9283a5bd8f2a2452786ea2a37ff0c56d8a2f7a9525
SSDEEP

24576:dEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZP:Gfot

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
3068	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\zwssoper\ImagePath = "C:\\Windows\\SysWOW64\\zwssoper\\arzxhcjx.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe

Deletes itself 1 IoCs

pid	Process
4804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1532	arzxhcjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1532 set thread context of 4804	1532	arzxhcjx.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2396	sc.exe
2428	sc.exe
3296	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
2932	2608	WerFault.exe	82
836	1532	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	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arzxhcjx.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 4588	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	86
PID 2608 wrote to memory of 4588	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	86
PID 2608 wrote to memory of 4588	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	86
PID 2608 wrote to memory of 1976	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	88
PID 2608 wrote to memory of 1976	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	88
PID 2608 wrote to memory of 1976	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	88
PID 2608 wrote to memory of 2396	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	90
PID 2608 wrote to memory of 2396	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	90
PID 2608 wrote to memory of 2396	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	90
PID 2608 wrote to memory of 2428	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	92
PID 2608 wrote to memory of 2428	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	92
PID 2608 wrote to memory of 2428	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	92
PID 2608 wrote to memory of 3296	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	94
PID 2608 wrote to memory of 3296	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	94
PID 2608 wrote to memory of 3296	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	94
PID 2608 wrote to memory of 3068	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	97
PID 2608 wrote to memory of 3068	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	97
PID 2608 wrote to memory of 3068	2608	2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe	97
PID 1532 wrote to memory of 4804	1532	arzxhcjx.exe	102
PID 1532 wrote to memory of 4804	1532	arzxhcjx.exe	102
PID 1532 wrote to memory of 4804	1532	arzxhcjx.exe	102
PID 1532 wrote to memory of 4804	1532	arzxhcjx.exe	102
PID 1532 wrote to memory of 4804	1532	arzxhcjx.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zwssoper\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\arzxhcjx.exe" C:\Windows\SysWOW64\zwssoper\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zwssoper binPath= "C:\Windows\SysWOW64\zwssoper\arzxhcjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zwssoper "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zwssoper
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3296
- 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:3068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 580
  2⤵
  - Program crash
  PID:2932

C:\Windows\SysWOW64\zwssoper\arzxhcjx.exe
C:\Windows\SysWOW64\zwssoper\arzxhcjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_0aa045fd7e868d2b897f7c7d49bd3da1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 536
  2⤵
  - Program crash
  PID:836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2608 -ip 2608
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 1532 -ip 1532
1⤵
PID:3960

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\arzxhcjx.exe

Filesize
14.9MB

MD5
0695ef210e79ac4aed7e3e9e7abe5ffb

SHA1
b6233ddf5d3692719904a42fa3909c2b4e523b08

SHA256
54e8ba3dd9fb336958d2474aafe8061ff480044ac5a33c9e1c6eec1fe098a5b1

SHA512
ed54657911c09773c42944240ebda5387a0470122859d449e3437518cd8b027edfd0573c324eb48db4366a5cbeb3a5b0a90a9569e40e6702b950e4b18a1331a3

Download Submit
memory/1532-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1532-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1532-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1532-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2608-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2608-2-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/2608-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2608-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2608-8-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/2608-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/4804-14-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/4804-16-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/4804-17-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads