tofsee | c4c31118bfe9b71372e7a3b0d8af32cb2fbdc90d2907a1527b68757c6a625972

General

Target

2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe
Size

11.8MB
MD5

3c35df53659a5e0bf3470dae3ca6223f
SHA1

6299504ef85eb56575fabf71ac081f9bc77e6557
SHA256

c4c31118bfe9b71372e7a3b0d8af32cb2fbdc90d2907a1527b68757c6a625972
SHA512

ae63f20babc5aed1b83862b161fcf010d80ba58bd75bd75592ca0554d6d5b1997cf139574a9072f826f5b0b9978caaef9515123b6086f65559ae6f588f44adfa
SSDEEP

3072:ULBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/S:ROMdRQr7OB0ypmMXnl8XEPM3noSWOCr

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
1652	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\ddymiybs\ImagePath = "C:\\Windows\\SysWOW64\\ddymiybs\\evdblgnb.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe

Deletes itself 1 IoCs

pid	Process
3356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3132	evdblgnb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3132 set thread context of 3356	3132	evdblgnb.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3404	sc.exe
3828	sc.exe
1948	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
4360	452	WerFault.exe	82
3432	3132	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_3c35df53659a5e0bf3470dae3ca6223f_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	evdblgnb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 1012	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	86
PID 452 wrote to memory of 1012	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	86
PID 452 wrote to memory of 1012	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	86
PID 452 wrote to memory of 2760	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	88
PID 452 wrote to memory of 2760	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	88
PID 452 wrote to memory of 2760	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	88
PID 452 wrote to memory of 3404	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	90
PID 452 wrote to memory of 3404	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	90
PID 452 wrote to memory of 3404	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	90
PID 452 wrote to memory of 3828	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	92
PID 452 wrote to memory of 3828	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	92
PID 452 wrote to memory of 3828	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	92
PID 452 wrote to memory of 1948	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	94
PID 452 wrote to memory of 1948	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	94
PID 452 wrote to memory of 1948	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	94
PID 452 wrote to memory of 1652	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	97
PID 452 wrote to memory of 1652	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	97
PID 452 wrote to memory of 1652	452	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	97
PID 3132 wrote to memory of 3356	3132	evdblgnb.exe	102
PID 3132 wrote to memory of 3356	3132	evdblgnb.exe	102
PID 3132 wrote to memory of 3356	3132	evdblgnb.exe	102
PID 3132 wrote to memory of 3356	3132	evdblgnb.exe	102
PID 3132 wrote to memory of 3356	3132	evdblgnb.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ddymiybs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\evdblgnb.exe" C:\Windows\SysWOW64\ddymiybs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ddymiybs binPath= "C:\Windows\SysWOW64\ddymiybs\evdblgnb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3404
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ddymiybs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ddymiybs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1948
- 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:1652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 1240
  2⤵
  - Program crash
  PID:4360

C:\Windows\SysWOW64\ddymiybs\evdblgnb.exe
C:\Windows\SysWOW64\ddymiybs\evdblgnb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3132 -s 512
  2⤵
  - Program crash
  PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 452 -ip 452
1⤵
PID:2900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3132 -ip 3132
1⤵
PID:4856

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\evdblgnb.exe

Filesize
12.9MB

MD5
544ad8fa493a1ea3129ca1feabf418cb

SHA1
1a000a38dd27ec4f27f1e9374b1b8d680ed01a33

SHA256
e1301d865f5ee009d13a0f9d898ec788e128d2fafba1877dd271a63b6d304fd0

SHA512
175b92dc2404b95a5d8ed393f7f12f8a385cb32c5f48d9c36509ca3f0e29628f166c7f90939c6417808aa3e92d83dd825f110afcc91c7c904e908330bb639c1b

Download Submit
memory/452-8-0x0000000000680000-0x0000000000693000-memory.dmp

Filesize
76KB

Download
memory/452-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/452-2-0x0000000000680000-0x0000000000693000-memory.dmp

Filesize
76KB

Download
memory/452-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/452-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/452-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3132-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3132-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3132-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3132-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3356-14-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/3356-16-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/3356-17-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads