tofsee | 2660543a9e16478ec15a63b15b36a5d0a705d6436e3331b1b7cbf295a9755347

General

Target

2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe
Size

10.5MB
MD5

4c10a0e345e8808fc2ff9a25c590a34a
SHA1

c2831b0f2ff900245e0896508d937f51d9683320
SHA256

2660543a9e16478ec15a63b15b36a5d0a705d6436e3331b1b7cbf295a9755347
SHA512

ee62eabab1619df784770ccdf521d320fa0f6ffcefb15bde1e1f4d653a0f1cb9dc5a3bb7a2aaf2502eff32c59bbcba5c4ba89ce4638548ae49426e070d8204f9
SSDEEP

196608:ZyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:UXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3

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
4840	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\ulbnvwvo\ImagePath = "C:\\Windows\\SysWOW64\\ulbnvwvo\\nnozuvtb.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe

Deletes itself 1 IoCs

pid	Process
1968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	nnozuvtb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3680 set thread context of 1968	3680	nnozuvtb.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2716	sc.exe
3812	sc.exe
2068	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

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	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	nnozuvtb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.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 3088 wrote to memory of 4692	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	85
PID 3088 wrote to memory of 4692	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	85
PID 3088 wrote to memory of 4692	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	85
PID 3088 wrote to memory of 3712	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	87
PID 3088 wrote to memory of 3712	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	87
PID 3088 wrote to memory of 3712	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	87
PID 3088 wrote to memory of 2068	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	89
PID 3088 wrote to memory of 2068	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	89
PID 3088 wrote to memory of 2068	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	89
PID 3088 wrote to memory of 2716	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	91
PID 3088 wrote to memory of 2716	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	91
PID 3088 wrote to memory of 2716	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	91
PID 3088 wrote to memory of 3812	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	93
PID 3088 wrote to memory of 3812	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	93
PID 3088 wrote to memory of 3812	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	93
PID 3088 wrote to memory of 4840	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	96
PID 3088 wrote to memory of 4840	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	96
PID 3088 wrote to memory of 4840	3088	2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe	96
PID 3680 wrote to memory of 1968	3680	nnozuvtb.exe	98
PID 3680 wrote to memory of 1968	3680	nnozuvtb.exe	98
PID 3680 wrote to memory of 1968	3680	nnozuvtb.exe	98
PID 3680 wrote to memory of 1968	3680	nnozuvtb.exe	98
PID 3680 wrote to memory of 1968	3680	nnozuvtb.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ulbnvwvo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nnozuvtb.exe" C:\Windows\SysWOW64\ulbnvwvo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ulbnvwvo binPath= "C:\Windows\SysWOW64\ulbnvwvo\nnozuvtb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ulbnvwvo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ulbnvwvo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3812
- 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:4840

C:\Windows\SysWOW64\ulbnvwvo\nnozuvtb.exe
C:\Windows\SysWOW64\ulbnvwvo\nnozuvtb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_4c10a0e345e8808fc2ff9a25c590a34a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1968

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\nnozuvtb.exe

Filesize
12.4MB

MD5
3a932f09203ee2dcf81b2def33531fc2

SHA1
75a8773e023268b64e7c0f98cfa6d475bf46ce8f

SHA256
6f9003aa884f34fab373f74c9ea007e50eac412e414c84ce7723bb4be875d49c

SHA512
7e0632be800dc625708264297d14641940d0da7a1dd27b82ed701d667cd0108a04e01d59e69e2184d0605226451849310c305e1a95465bc6d43f27c7f1966cd3

Download Submit
memory/1968-17-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1968-22-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1968-21-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1968-14-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/1968-18-0x0000000000E00000-0x0000000000E15000-memory.dmp

Filesize
84KB

Download
memory/3088-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/3088-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3088-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3088-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/3088-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3088-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/3680-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3680-20-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3680-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3680-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads