tofsee | 65746616ce1a98e6c66240aed7eafafc1b00d11b8abbee7dc6adcc8d36d8aebf

General

Target

2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe
Size

11.9MB
MD5

55b2bf14613a4eaba102c56e35b48354
SHA1

40e400f46bdc4dab10f8e8c98af32ffa8fab298e
SHA256

65746616ce1a98e6c66240aed7eafafc1b00d11b8abbee7dc6adcc8d36d8aebf
SHA512

ea8882e8bf71935d65c5313ebad2ae2a8cb48dd32c5b816bf622879c7b33aa391f93eadf8d02113e2d6feba8d1cb9572c24c2170f08bffc291537b650385576f
SSDEEP

3072:HLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/G:eOMdRQr7OB0ypmMXnl8XEPM3noSWOCf

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
1076	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\naulnzrf\ImagePath = "C:\\Windows\\SysWOW64\\naulnzrf\\iijupqow.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe

Deletes itself 1 IoCs

pid	Process
788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3416	iijupqow.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3416 set thread context of 788	3416	iijupqow.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
2572	sc.exe
3580	sc.exe
8	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
4484	4752	WerFault.exe	82
3024	3416	WerFault.exe	100

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	iijupqow.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	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	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 3240	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	86
PID 4752 wrote to memory of 3240	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	86
PID 4752 wrote to memory of 3240	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	86
PID 4752 wrote to memory of 2740	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	92
PID 4752 wrote to memory of 2740	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	92
PID 4752 wrote to memory of 2740	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	92
PID 4752 wrote to memory of 2572	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	94
PID 4752 wrote to memory of 2572	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	94
PID 4752 wrote to memory of 2572	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	94
PID 4752 wrote to memory of 3580	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	96
PID 4752 wrote to memory of 3580	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	96
PID 4752 wrote to memory of 3580	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	96
PID 4752 wrote to memory of 8	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	98
PID 4752 wrote to memory of 8	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	98
PID 4752 wrote to memory of 8	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	98
PID 4752 wrote to memory of 1076	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	101
PID 4752 wrote to memory of 1076	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	101
PID 4752 wrote to memory of 1076	4752	2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe	101
PID 3416 wrote to memory of 788	3416	iijupqow.exe	109
PID 3416 wrote to memory of 788	3416	iijupqow.exe	109
PID 3416 wrote to memory of 788	3416	iijupqow.exe	109
PID 3416 wrote to memory of 788	3416	iijupqow.exe	109
PID 3416 wrote to memory of 788	3416	iijupqow.exe	109

C:\Users\Admin\AppData\Local\Temp\2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\naulnzrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iijupqow.exe" C:\Windows\SysWOW64\naulnzrf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create naulnzrf binPath= "C:\Windows\SysWOW64\naulnzrf\iijupqow.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description naulnzrf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start naulnzrf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:8
- 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:1076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 1036
  2⤵
  - Program crash
  PID:4484

C:\Windows\SysWOW64\naulnzrf\iijupqow.exe
C:\Windows\SysWOW64\naulnzrf\iijupqow.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_55b2bf14613a4eaba102c56e35b48354_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 508
  2⤵
  - Program crash
  PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4752 -ip 4752
1⤵
PID:5028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3416 -ip 3416
1⤵
PID:512

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\iijupqow.exe

Filesize
11.2MB

MD5
656151d7b13ba2ca91b1068f35a0b161

SHA1
52385f5a0499a8b4be6d2c3b9305d72119017d25

SHA256
c99aab6339a6b84a0f94576d9ec4eaf553472a23f75bb6ea03ab96d459790bf6

SHA512
76d6d04241c65af9a4ab597524eca12a738cf988e8ace6ffcf7810f3e1a0e810240914adac68b3e17e786575920fcef1ced9229b9c11e5c391355e9743ae4a3e

Download Submit
memory/788-14-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/788-17-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/788-16-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/3416-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3416-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3416-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3416-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4752-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4752-8-0x00000000004D0000-0x00000000004E3000-memory.dmp

Filesize
76KB

Download
memory/4752-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/4752-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4752-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4752-2-0x00000000004D0000-0x00000000004E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads