tofsee | 4d30e4f325b8b087db2224633cfaee430cd2aaa42c1dde8532e45906ab087e51

General

Target

2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe
Size

13.6MB
MD5

9680b32c7fe1e783dd87dd9c0c82b5d2
SHA1

6922e45f8c4cab77ec15e36a58340dd54718f813
SHA256

4d30e4f325b8b087db2224633cfaee430cd2aaa42c1dde8532e45906ab087e51
SHA512

17ba622318af9bdff22d92f52706c89d15b33f0f7741731cde9f3449ec245582c61a9299067192153a1194f853bf0ce1999912d3fc6f3355ffcbab2df87cc731
SSDEEP

24576:t/0dLk3X4ICvkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkn:F0dLk3oh

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
4784	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\rtzsrspk\ImagePath = "C:\\Windows\\SysWOW64\\rtzsrspk\\eefqlmks.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	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe

Deletes itself 1 IoCs

pid	Process
632	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3656	eefqlmks.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3656 set thread context of 632	3656	eefqlmks.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
3136	sc.exe
976	sc.exe
1040	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
764	848	WerFault.exe	84
768	3656	WerFault.exe	98

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	eefqlmks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 4068	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	88
PID 848 wrote to memory of 4068	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	88
PID 848 wrote to memory of 4068	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	88
PID 848 wrote to memory of 540	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	90
PID 848 wrote to memory of 540	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	90
PID 848 wrote to memory of 540	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	90
PID 848 wrote to memory of 3136	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	92
PID 848 wrote to memory of 3136	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	92
PID 848 wrote to memory of 3136	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	92
PID 848 wrote to memory of 976	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	94
PID 848 wrote to memory of 976	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	94
PID 848 wrote to memory of 976	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	94
PID 848 wrote to memory of 1040	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	96
PID 848 wrote to memory of 1040	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	96
PID 848 wrote to memory of 1040	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	96
PID 848 wrote to memory of 4784	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	99
PID 848 wrote to memory of 4784	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	99
PID 848 wrote to memory of 4784	848	2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe	99
PID 3656 wrote to memory of 632	3656	eefqlmks.exe	104
PID 3656 wrote to memory of 632	3656	eefqlmks.exe	104
PID 3656 wrote to memory of 632	3656	eefqlmks.exe	104
PID 3656 wrote to memory of 632	3656	eefqlmks.exe	104
PID 3656 wrote to memory of 632	3656	eefqlmks.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rtzsrspk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe" C:\Windows\SysWOW64\rtzsrspk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rtzsrspk binPath= "C:\Windows\SysWOW64\rtzsrspk\eefqlmks.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rtzsrspk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rtzsrspk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1040
- 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:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 1036
  2⤵
  - Program crash
  PID:764

C:\Windows\SysWOW64\rtzsrspk\eefqlmks.exe
C:\Windows\SysWOW64\rtzsrspk\eefqlmks.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_9680b32c7fe1e783dd87dd9c0c82b5d2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3656 -s 512
  2⤵
  - Program crash
  PID:768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 848 -ip 848
1⤵
PID:3584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3656 -ip 3656
1⤵
PID:4872

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe

Filesize
11.9MB

MD5
6d238f55e4a8e47f21b32f07520b0dbe

SHA1
8ed9a3c5a619cd2d89a6cb7f38abc1bfac76f671

SHA256
631e4d2bb2b9509b9d2a6027e5d9eb85fca95dc19242165675e19ed916046156

SHA512
25976a4a4674c8b4f6a51058ca4522155cac32c90417fcb7d8289d934b752d085275e94dd757341f752d7c6251f42bf3ea21a8b44f632f902bb8f2198f826ea2

Download Submit
memory/632-14-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/632-17-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/632-16-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/848-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/848-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/848-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/848-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/848-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/3656-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3656-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3656-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3656-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads