tofsee | 07624eb5d8e98eb16931b1d103e293f60cb1e832ada9c57bc9b188ef04d99511

General

Target

2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe
Size

10.2MB
MD5

17cdf5af0f3bbd44fe4a61faee6c856e
SHA1

7cfd9c4f5cb3b202aa5abe7b39dd17c429fb6098
SHA256

07624eb5d8e98eb16931b1d103e293f60cb1e832ada9c57bc9b188ef04d99511
SHA512

adcce1d8653628e6b9faa870e1042cf8cb3521b05653d0af6a7e753558a6eeb91e523a329af0773962a4d73d2037c9c36d8b38d98f9192f940a3f7f92e547a03
SSDEEP

24576:RpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttD:roo9

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
2092	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\gqqnggce\ImagePath = "C:\\Windows\\SysWOW64\\gqqnggce\\egzkrznd.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe

Deletes itself 1 IoCs

pid	Process
2912	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4712	egzkrznd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4712 set thread context of 2912	4712	egzkrznd.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4544	sc.exe
4016	sc.exe
5000	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4496	3348	WerFault.exe	85
3416	4712	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	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_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	svchost.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	egzkrznd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 3980	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	86
PID 3348 wrote to memory of 3980	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	86
PID 3348 wrote to memory of 3980	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	86
PID 3348 wrote to memory of 1608	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	88
PID 3348 wrote to memory of 1608	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	88
PID 3348 wrote to memory of 1608	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	88
PID 3348 wrote to memory of 4544	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	90
PID 3348 wrote to memory of 4544	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	90
PID 3348 wrote to memory of 4544	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	90
PID 3348 wrote to memory of 4016	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	92
PID 3348 wrote to memory of 4016	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	92
PID 3348 wrote to memory of 4016	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	92
PID 3348 wrote to memory of 5000	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	94
PID 3348 wrote to memory of 5000	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	94
PID 3348 wrote to memory of 5000	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	94
PID 3348 wrote to memory of 2092	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	97
PID 3348 wrote to memory of 2092	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	97
PID 3348 wrote to memory of 2092	3348	2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe	97
PID 4712 wrote to memory of 2912	4712	egzkrznd.exe	102
PID 4712 wrote to memory of 2912	4712	egzkrznd.exe	102
PID 4712 wrote to memory of 2912	4712	egzkrznd.exe	102
PID 4712 wrote to memory of 2912	4712	egzkrznd.exe	102
PID 4712 wrote to memory of 2912	4712	egzkrznd.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gqqnggce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egzkrznd.exe" C:\Windows\SysWOW64\gqqnggce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gqqnggce binPath= "C:\Windows\SysWOW64\gqqnggce\egzkrznd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gqqnggce "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gqqnggce
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5000
- 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:2092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3348 -s 1244
  2⤵
  - Program crash
  PID:4496

C:\Windows\SysWOW64\gqqnggce\egzkrznd.exe
C:\Windows\SysWOW64\gqqnggce\egzkrznd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_17cdf5af0f3bbd44fe4a61faee6c856e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4712 -s 512
  2⤵
  - Program crash
  PID:3416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3348 -ip 3348
1⤵
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4712 -ip 4712
1⤵
PID:1420

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\egzkrznd.exe

Filesize
13.3MB

MD5
e8277807b13fb321eb3880f6003b2d20

SHA1
c70e5cd0c648e24ab140f99e922227f695bda476

SHA256
748d2b6bf9689fd9d80add897c076ecce0597b4661806a95551573761acc691e

SHA512
69b19b07e68a69a88c0e37c6cb4bfb5ac74d2f5c0736ef3eccec357039aa29259ba6a405be913fe6ab1fae1e75d906fa7ac31c22664d0e9e7b27253678868119

Download Submit
memory/2912-14-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2912-17-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2912-16-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/3348-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3348-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/3348-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3348-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4712-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4712-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4712-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4712-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads