tofsee | 847259d4013f05c28589730fb8fb1e0191944c5a2fd76966c9115b7cb3ce1b73

General

Target

2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe
Size

13.6MB
MD5

43c01bc0cedee20faf232227603380fc
SHA1

10667a4f434d43bb081f9e16305174afd4ab21a7
SHA256

847259d4013f05c28589730fb8fb1e0191944c5a2fd76966c9115b7cb3ce1b73
SHA512

5c668405cfce9a2ddc87348b5293cc125da2478147d4e826a091d05f2450f3a1db11e5c90884e2178fc96a2720ad1a6499c15229819324e9383d0fcc83faae4d
SSDEEP

12288:NWaQslyPXVhHfUjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjN:0aQNlhHfw

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
4276	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\vwjezrdl\ImagePath = "C:\\Windows\\SysWOW64\\vwjezrdl\\mpvpepag.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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
5220	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4272	mpvpepag.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4272 set thread context of 5220	4272	mpvpepag.exe	111

Launches sc.exe 3 IoCs

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

pid	Process
2796	sc.exe
5976	sc.exe
2280	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 2 IoCs

pid	pid_target	Process	procid_target
4644	4264	WerFault.exe	85
1144	4272	WerFault.exe	103

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mpvpepag.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_43c01bc0cedee20faf232227603380fc_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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 232	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	89
PID 4264 wrote to memory of 232	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	89
PID 4264 wrote to memory of 232	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	89
PID 4264 wrote to memory of 3344	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	91
PID 4264 wrote to memory of 3344	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	91
PID 4264 wrote to memory of 3344	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	91
PID 4264 wrote to memory of 2796	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	93
PID 4264 wrote to memory of 2796	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	93
PID 4264 wrote to memory of 2796	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	93
PID 4264 wrote to memory of 5976	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	96
PID 4264 wrote to memory of 5976	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	96
PID 4264 wrote to memory of 5976	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	96
PID 4264 wrote to memory of 2280	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	101
PID 4264 wrote to memory of 2280	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	101
PID 4264 wrote to memory of 2280	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	101
PID 4264 wrote to memory of 4276	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	104
PID 4264 wrote to memory of 4276	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	104
PID 4264 wrote to memory of 4276	4264	2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe	104
PID 4272 wrote to memory of 5220	4272	mpvpepag.exe	111
PID 4272 wrote to memory of 5220	4272	mpvpepag.exe	111
PID 4272 wrote to memory of 5220	4272	mpvpepag.exe	111
PID 4272 wrote to memory of 5220	4272	mpvpepag.exe	111
PID 4272 wrote to memory of 5220	4272	mpvpepag.exe	111

C:\Users\Admin\AppData\Local\Temp\2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vwjezrdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpvpepag.exe" C:\Windows\SysWOW64\vwjezrdl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vwjezrdl binPath= "C:\Windows\SysWOW64\vwjezrdl\mpvpepag.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vwjezrdl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vwjezrdl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2280
- 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:4276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4264 -s 1200
  2⤵
  - Program crash
  PID:4644

C:\Windows\SysWOW64\vwjezrdl\mpvpepag.exe
C:\Windows\SysWOW64\vwjezrdl\mpvpepag.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_43c01bc0cedee20faf232227603380fc_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4272 -s 512
  2⤵
  - Program crash
  PID:1144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4264 -ip 4264
1⤵
PID:2932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4272 -ip 4272
1⤵
PID:4988

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\mpvpepag.exe

Filesize
11.1MB

MD5
d14e18ffe94ad3ef14d902d29ce46397

SHA1
4ecb7b872a5dc3a8a19eab19833304cd3e1d50fd

SHA256
3a248c2a775ddefa7b754ac6a467190c906cc16e7abe23011f92414650464a3b

SHA512
bf7be99a284b2c1142db752cb0c1cfdea88e6638927ff2e017c2e19d41341d321b18e197d6deb95f8abdde084193bf981c372d4fc0bbfb59c21609a3a5870cd6

Download Submit
memory/4264-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4264-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4264-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/4264-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4264-8-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/4264-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/4272-12-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4272-11-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4272-13-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4272-19-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/5220-14-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download
memory/5220-16-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download
memory/5220-17-0x0000000000EA0000-0x0000000000EB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads