tofsee | 8448baf7f683e9e5ae40c85fb8b05823cc48664efe27f0168230379b054f5e6d

General

Target

2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe
Size

10.7MB
MD5

fe6536ceee3ba947c9cf93a096b23ff6
SHA1

cdd504360807c51a01abc90734187d44534c2e36
SHA256

8448baf7f683e9e5ae40c85fb8b05823cc48664efe27f0168230379b054f5e6d
SHA512

59708ab43417a4e794f7066a731b026701587524b5be55f05594a8c3db3437d08fd4b9db42a19f47c376e7450e99a893440427c0f34fa69555d9beb9fc8708f3
SSDEEP

3072:wl3t+DDATZKP7Ny5Da8nlGAYSjmhpsb9i1UjQJP+Xn2Dg7NVXewtwtwtwtwtwtwn:wzyeKP7qa8VmhpspedP+X2Dg7H

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
5284	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\pasxhpyj\ImagePath = "C:\\Windows\\SysWOW64\\pasxhpyj\\sxhcwifh.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-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
5004	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5016	sxhcwifh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5016 set thread context of 5004	5016	sxhcwifh.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4636	sc.exe
4896	sc.exe
4876	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 4 IoCs

pid	pid_target	Process	procid_target
2248	5016	WerFault.exe	104
4568	3736	WerFault.exe	87
5404	5016	WerFault.exe	104
2992	5016	WerFault.exe	104

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	sc.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	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sxhcwifh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 768	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	90
PID 3736 wrote to memory of 768	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	90
PID 3736 wrote to memory of 768	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	90
PID 3736 wrote to memory of 5236	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	93
PID 3736 wrote to memory of 5236	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	93
PID 3736 wrote to memory of 5236	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	93
PID 3736 wrote to memory of 4636	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	95
PID 3736 wrote to memory of 4636	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	95
PID 3736 wrote to memory of 4636	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	95
PID 3736 wrote to memory of 4896	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	97
PID 3736 wrote to memory of 4896	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	97
PID 3736 wrote to memory of 4896	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	97
PID 3736 wrote to memory of 4876	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	102
PID 3736 wrote to memory of 4876	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	102
PID 3736 wrote to memory of 4876	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	102
PID 5016 wrote to memory of 5004	5016	sxhcwifh.exe	105
PID 5016 wrote to memory of 5004	5016	sxhcwifh.exe	105
PID 5016 wrote to memory of 5004	5016	sxhcwifh.exe	105
PID 5016 wrote to memory of 5004	5016	sxhcwifh.exe	105
PID 5016 wrote to memory of 5004	5016	sxhcwifh.exe	105
PID 3736 wrote to memory of 5284	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	108
PID 3736 wrote to memory of 5284	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	108
PID 3736 wrote to memory of 5284	3736	2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pasxhpyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxhcwifh.exe" C:\Windows\SysWOW64\pasxhpyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pasxhpyj binPath= "C:\Windows\SysWOW64\pasxhpyj\sxhcwifh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pasxhpyj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pasxhpyj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4876
- 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:5284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3736 -s 1236
  2⤵
  - Program crash
  PID:4568

C:\Windows\SysWOW64\pasxhpyj\sxhcwifh.exe
C:\Windows\SysWOW64\pasxhpyj\sxhcwifh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_fe6536ceee3ba947c9cf93a096b23ff6_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 512
  2⤵
  - Program crash
  PID:2248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 532
  2⤵
  - Program crash
  PID:5404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 548
  2⤵
  - Program crash
  PID:2992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5016 -ip 5016
1⤵
PID:4368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3736 -ip 3736
1⤵
PID:1808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 5016 -ip 5016
1⤵
PID:5644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5016 -ip 5016
1⤵
PID:1476

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\sxhcwifh.exe

Filesize
12.8MB

MD5
0549cec7dd5260bb8a3d01edcea03b12

SHA1
c375f02c362c9708024e38fbd308864e6e3849ba

SHA256
62b829816f70a0c775f00ac38d017b27b4d56d37813c3881eaa3b1dd9d582c38

SHA512
baf173c370c669ae07840ddf0e3a54790e49c215b14c8fa054a0a155ae4423689b7d15d4d499b15f02db788cfcadae38c2c1c197ae948438dc69ca70c3d5b696

Download Submit
memory/3736-2-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3736-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/3736-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3736-16-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3736-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5004-19-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/5004-21-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/5004-9-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/5004-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/5004-20-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/5016-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5016-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5016-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5016-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads