tofsee | c0919826b38eb237c7bd2bd2c99a56131c143186aea9f3809dbbdc1eb222077b

General

Target

2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe
Size

12.0MB
MD5

49fd5c071e54639f9f2aa0215218a542
SHA1

30c64c379a44fef501309c2ee948374cf68863e6
SHA256

c0919826b38eb237c7bd2bd2c99a56131c143186aea9f3809dbbdc1eb222077b
SHA512

3c6c25b1a57cb74fa0ea9fd11c7df699866a23215938d37ff1eff7d5cdb67fe9cccba6d0bcbfd9064acf51702566fbe09f52cead7e0c94d4eb13d45c86aec874
SSDEEP

3072:z5nbTHQC2mC+vdVWQhHPGyCsPiHMhPxO7rFI7NP6BfGrIHmll9uX4YRrVOVOVOVn:NnJjWIvGyCYq/H2Ak5uX

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
2680	netsh.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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe

Executes dropped EXE 1 IoCs

pid	Process
3652	evdblgnb.exe

Launches sc.exe 3 IoCs

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

pid	Process
3676	sc.exe
1520	sc.exe
2184	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 1 IoCs

pid	pid_target	Process	procid_target
3464	4772	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 7 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	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 1480	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	108
PID 4772 wrote to memory of 1480	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	108
PID 4772 wrote to memory of 1480	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	108
PID 4772 wrote to memory of 1124	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	110
PID 4772 wrote to memory of 1124	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	110
PID 4772 wrote to memory of 1124	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	110
PID 4772 wrote to memory of 3676	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	112
PID 4772 wrote to memory of 3676	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	112
PID 4772 wrote to memory of 3676	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	112
PID 4772 wrote to memory of 1520	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	114
PID 4772 wrote to memory of 1520	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	114
PID 4772 wrote to memory of 1520	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	114
PID 4772 wrote to memory of 2184	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	116
PID 4772 wrote to memory of 2184	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	116
PID 4772 wrote to memory of 2184	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	116
PID 4772 wrote to memory of 2680	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	119
PID 4772 wrote to memory of 2680	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	119
PID 4772 wrote to memory of 2680	4772	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	119

C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhvtflje\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\evdblgnb.exe" C:\Windows\SysWOW64\mhvtflje\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mhvtflje binPath= "C:\Windows\SysWOW64\mhvtflje\evdblgnb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mhvtflje "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mhvtflje
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- 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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1028
  2⤵
  - Program crash
  PID:3464

C:\Windows\SysWOW64\mhvtflje\evdblgnb.exe
C:\Windows\SysWOW64\mhvtflje\evdblgnb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4772 -ip 4772
1⤵
PID:8

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

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

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

1

T1562.004

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
13.7MB

MD5
933a5bc4e09b101b10bd0b52b76525a6

SHA1
83405609ccfcaad841f4994714fee26541f86711

SHA256
eaee17d4bb65db54e53cbfa2612d493533a5d466da2223bf235a6c3807aa1860

SHA512
7eea3959def8dc55236620c4d8fd9c63fec15644990a4024189fe8b9a1a5bfbc2536c9e019976486543755cd9ba899726624f4e2921ad4c1a1655afd778bdffd

Download Submit
memory/4772-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4772-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4772-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads