tofsee | 3cc1d69ebeed06739436067ba1457c15dfe54a5240a2a30fb774226197c5355f

General

Target

2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe
Size

10.9MB
MD5

e968a6ee6ae3aadc676e3da246ad052b
SHA1

d8f995b2ac476b8167a03cca9c741b9793edf5f9
SHA256

3cc1d69ebeed06739436067ba1457c15dfe54a5240a2a30fb774226197c5355f
SHA512

554cb5577e5af3208a812742091957a8f97dd435913832ec2412f0b9ca38f89a3c0c3c1bf8c332bcf3da44febea426c9158053baa2b41ad71f816f6cbe2ca1ee
SSDEEP

49152:NiSUBoooooooooooooooooooooooooooooooooooooooooooooooooooooooooou:NbUY

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
4704	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\mvarwbcd\ImagePath = "C:\\Windows\\SysWOW64\\mvarwbcd\\lffwhqhj.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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
4468	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2408	lffwhqhj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2408 set thread context of 4468	2408	lffwhqhj.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1072	sc.exe
4728	sc.exe
4176	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	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	lffwhqhj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 3900	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	85
PID 1784 wrote to memory of 3900	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	85
PID 1784 wrote to memory of 3900	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	85
PID 1784 wrote to memory of 692	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	87
PID 1784 wrote to memory of 692	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	87
PID 1784 wrote to memory of 692	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	87
PID 1784 wrote to memory of 1072	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	91
PID 1784 wrote to memory of 1072	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	91
PID 1784 wrote to memory of 1072	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	91
PID 1784 wrote to memory of 4728	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	94
PID 1784 wrote to memory of 4728	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	94
PID 1784 wrote to memory of 4728	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	94
PID 1784 wrote to memory of 4176	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	96
PID 1784 wrote to memory of 4176	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	96
PID 1784 wrote to memory of 4176	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	96
PID 2408 wrote to memory of 4468	2408	lffwhqhj.exe	99
PID 2408 wrote to memory of 4468	2408	lffwhqhj.exe	99
PID 2408 wrote to memory of 4468	2408	lffwhqhj.exe	99
PID 2408 wrote to memory of 4468	2408	lffwhqhj.exe	99
PID 2408 wrote to memory of 4468	2408	lffwhqhj.exe	99
PID 1784 wrote to memory of 4704	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	100
PID 1784 wrote to memory of 4704	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	100
PID 1784 wrote to memory of 4704	1784	2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mvarwbcd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lffwhqhj.exe" C:\Windows\SysWOW64\mvarwbcd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mvarwbcd binPath= "C:\Windows\SysWOW64\mvarwbcd\lffwhqhj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mvarwbcd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mvarwbcd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4176
- 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:4704

C:\Windows\SysWOW64\mvarwbcd\lffwhqhj.exe
C:\Windows\SysWOW64\mvarwbcd\lffwhqhj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e968a6ee6ae3aadc676e3da246ad052b_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4468

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\lffwhqhj.exe

Filesize
10.0MB

MD5
cc9b63328de9f0bf48a1e24865ee47e2

SHA1
78809264709f5e57a0efa8f6dd573a621e8c6f99

SHA256
fec0516d6dd588778f57aa31bb79fb76429392d0b9cccecc1cfe3964e273cd61

SHA512
dc7a018ee06193737c4229d1ef612baa3db58312568713fb4ed41b8f6f1884d3c4448fad19c6f5c163e0605c1acc709169c69bc7df970f9fd62fc4fb18e4d8e2

Download Submit
memory/1784-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1784-3-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1784-5-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/1784-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1784-13-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/1784-2-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/2408-10-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/2408-12-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/2408-17-0x0000000000400000-0x00000000033A1000-memory.dmp

Filesize
47.6MB

Download
memory/4468-9-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/4468-15-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download
memory/4468-16-0x0000000000FA0000-0x0000000000FB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads