tofsee | 0406050c5a7682f4f7ff1f2ef234b7845e20b523678902da08aa3e30b4bd37b9

General

Target

2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe
Size

12.3MB
MD5

b4225293c2f943563c10072c131c3b29
SHA1

5000ce755f6a7ca77cfc63cc623a66d600d0633f
SHA256

0406050c5a7682f4f7ff1f2ef234b7845e20b523678902da08aa3e30b4bd37b9
SHA512

12158bf3299a445b375274c04fb9b47c46445885775f86a739279ae98797cc2029f9c56308984b098f5060096e1c956309d159c845c8cd20c495a24247e32fa8
SSDEEP

393216:5XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXf:9

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
2024	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\lvwwolfz\ImagePath = "C:\\Windows\\SysWOW64\\lvwwolfz\\sstezayg.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-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe

Deletes itself 1 IoCs

pid	Process
4628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	sstezayg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1992 set thread context of 4628	1992	sstezayg.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
2576	sc.exe
4800	sc.exe
1908	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

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	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	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.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	sstezayg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4056	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	88
PID 1692 wrote to memory of 4056	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	88
PID 1692 wrote to memory of 4056	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	88
PID 1692 wrote to memory of 4560	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	90
PID 1692 wrote to memory of 4560	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	90
PID 1692 wrote to memory of 4560	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	90
PID 1692 wrote to memory of 2576	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	92
PID 1692 wrote to memory of 2576	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	92
PID 1692 wrote to memory of 2576	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	92
PID 1692 wrote to memory of 4800	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	94
PID 1692 wrote to memory of 4800	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	94
PID 1692 wrote to memory of 4800	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	94
PID 1692 wrote to memory of 1908	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	96
PID 1692 wrote to memory of 1908	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	96
PID 1692 wrote to memory of 1908	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	96
PID 1992 wrote to memory of 4628	1992	sstezayg.exe	99
PID 1992 wrote to memory of 4628	1992	sstezayg.exe	99
PID 1992 wrote to memory of 4628	1992	sstezayg.exe	99
PID 1992 wrote to memory of 4628	1992	sstezayg.exe	99
PID 1992 wrote to memory of 4628	1992	sstezayg.exe	99
PID 1692 wrote to memory of 2024	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	100
PID 1692 wrote to memory of 2024	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	100
PID 1692 wrote to memory of 2024	1692	2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lvwwolfz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sstezayg.exe" C:\Windows\SysWOW64\lvwwolfz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lvwwolfz binPath= "C:\Windows\SysWOW64\lvwwolfz\sstezayg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lvwwolfz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lvwwolfz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1908
- 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:2024

C:\Windows\SysWOW64\lvwwolfz\sstezayg.exe
C:\Windows\SysWOW64\lvwwolfz\sstezayg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b4225293c2f943563c10072c131c3b29_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4628

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\sstezayg.exe

Filesize
13.6MB

MD5
0f7f026e05ab7e267c81d56d4d04499d

SHA1
4e1306ec927e132e2f1131ae82205f778611d569

SHA256
0f5c469a04a03d452c5138e94ea94b3c4ed013ecd0c054eee57ba673739400cd

SHA512
e5a20186979e8cbaef0fb63d5201ad0c23dbe3a3cd4987662b9630fabdc32ce31b5b9e958b85c2e7f29a98f99945fd20c21878a2ff8a11aab2f7db66ab8c75a3

Download Submit
memory/1692-16-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/1692-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1692-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/1692-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1692-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/1692-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1992-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1992-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4628-9-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4628-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4628-18-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4628-19-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/4628-20-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads