tofsee | 67354b31b1847a125b832183dd256f7b66ad4879a328bdccdc920d0fba5b8839

General

Target

2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe
Size

10.2MB
MD5

e8749f4125656b64d35444950d07b83e
SHA1

b6b4996217f862d3945cf72c036884dc3cd77d39
SHA256

67354b31b1847a125b832183dd256f7b66ad4879a328bdccdc920d0fba5b8839
SHA512

5af6ad357b0e46811822aff5690418b71ff8cecc00da9e63f872396a4754099f809f23cf412cea04ba305a87bc1484baf45b3d557326d94b663d85177cc38c6a
SSDEEP

24576:BpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttX:boo

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
3508	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\akrynrf\ImagePath = "C:\\Windows\\SysWOW64\\akrynrf\\fbttqfes.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe

Deletes itself 1 IoCs

pid	Process
3360	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	fbttqfes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4756 set thread context of 3360	4756	fbttqfes.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4460	sc.exe
380	sc.exe
3924	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
2492	2500	WerFault.exe	83
1652	4756	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbttqfes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_e8749f4125656b64d35444950d07b83e_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2188	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	86
PID 2500 wrote to memory of 2188	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	86
PID 2500 wrote to memory of 2188	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	86
PID 2500 wrote to memory of 1904	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	88
PID 2500 wrote to memory of 1904	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	88
PID 2500 wrote to memory of 1904	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	88
PID 2500 wrote to memory of 4460	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	90
PID 2500 wrote to memory of 4460	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	90
PID 2500 wrote to memory of 4460	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	90
PID 2500 wrote to memory of 380	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	92
PID 2500 wrote to memory of 380	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	92
PID 2500 wrote to memory of 380	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	92
PID 2500 wrote to memory of 3924	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	94
PID 2500 wrote to memory of 3924	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	94
PID 2500 wrote to memory of 3924	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	94
PID 2500 wrote to memory of 3508	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	97
PID 2500 wrote to memory of 3508	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	97
PID 2500 wrote to memory of 3508	2500	2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe	97
PID 4756 wrote to memory of 3360	4756	fbttqfes.exe	102
PID 4756 wrote to memory of 3360	4756	fbttqfes.exe	102
PID 4756 wrote to memory of 3360	4756	fbttqfes.exe	102
PID 4756 wrote to memory of 3360	4756	fbttqfes.exe	102
PID 4756 wrote to memory of 3360	4756	fbttqfes.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\akrynrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fbttqfes.exe" C:\Windows\SysWOW64\akrynrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create akrynrf binPath= "C:\Windows\SysWOW64\akrynrf\fbttqfes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description akrynrf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start akrynrf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3924
- 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:3508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 1028
  2⤵
  - Program crash
  PID:2492

C:\Windows\SysWOW64\akrynrf\fbttqfes.exe
C:\Windows\SysWOW64\akrynrf\fbttqfes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_e8749f4125656b64d35444950d07b83e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 512
  2⤵
  - Program crash
  PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2500 -ip 2500
1⤵
PID:5024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4756 -ip 4756
1⤵
PID:5072

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\fbttqfes.exe

Filesize
12.2MB

MD5
d1dca4137b545cb6fa5221de89f5b392

SHA1
0a31a33baa0f43563ee91a75df82d220750d63fd

SHA256
e30dc001c43316682366ba827b5e9b83cf5e316ac06ea82b72607cc8400fd0e8

SHA512
b2709c878f0ef1267c3c58b3d469640ae058aca242d2bec773e888074ee606bd585d666da37ef44d5852f4388a3a0b842abe0722859999f735886e01b1856d75

Download Submit
memory/2500-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/2500-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2500-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/2500-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3360-14-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3360-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3360-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4756-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4756-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4756-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4756-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads