tofsee | 848b30717ca9b3c3b5348979705960b4d4f11c75dd2fe01cd40a6dafa5327402

General

Target

2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe
Size

10.8MB
MD5

4ede1f95ebe3d550c06eb393171de1d8
SHA1

fc4c1d0b27462e0e6d88dbe0f64c33753169586a
SHA256

848b30717ca9b3c3b5348979705960b4d4f11c75dd2fe01cd40a6dafa5327402
SHA512

9817bb96ff71f3a491af9616a51c445cd0e00bd1a2ebcc2acd060a01658da6151500a635ee68be063d9b3001d85302b814fd5d854ee56b6caa2b836ae990f6aa
SSDEEP

3072:qd/4YU1GznYfU+kBGsrOp7XwL0wMjKRaD8ll3//0N0N0N0N0N0N0N0N0N0N0N0Nl:cAJGznKpe89gLlMOoD4

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
5812	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-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe

Executes dropped EXE 1 IoCs

pid	Process
5100	egzkrznd.exe

Launches sc.exe 3 IoCs

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

pid	Process
1080	sc.exe
3876	sc.exe
2840	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
2376	528	WerFault.exe	84

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 528 wrote to memory of 2768	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	105
PID 528 wrote to memory of 2768	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	105
PID 528 wrote to memory of 2768	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	105
PID 528 wrote to memory of 5588	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	107
PID 528 wrote to memory of 5588	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	107
PID 528 wrote to memory of 5588	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	107
PID 528 wrote to memory of 3876	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	109
PID 528 wrote to memory of 3876	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	109
PID 528 wrote to memory of 3876	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	109
PID 528 wrote to memory of 2840	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	111
PID 528 wrote to memory of 2840	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	111
PID 528 wrote to memory of 2840	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	111
PID 528 wrote to memory of 1080	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	113
PID 528 wrote to memory of 1080	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	113
PID 528 wrote to memory of 1080	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	113
PID 528 wrote to memory of 5812	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	116
PID 528 wrote to memory of 5812	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	116
PID 528 wrote to memory of 5812	528	2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe	116

C:\Users\Admin\AppData\Local\Temp\2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\smbgmlwn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egzkrznd.exe" C:\Windows\SysWOW64\smbgmlwn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create smbgmlwn binPath= "C:\Windows\SysWOW64\smbgmlwn\egzkrznd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description smbgmlwn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start smbgmlwn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1080
- 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:5812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 528 -s 1180
  2⤵
  - Program crash
  PID:2376

C:\Windows\SysWOW64\smbgmlwn\egzkrznd.exe
C:\Windows\SysWOW64\smbgmlwn\egzkrznd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_4ede1f95ebe3d550c06eb393171de1d8_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 528 -ip 528
1⤵
PID:796

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\egzkrznd.exe

Filesize
11.4MB

MD5
bb4d193a2f7f8bc0f6a6f8f206a97f61

SHA1
bc799c003565c3fb952c5e06c23b3abb4244a525

SHA256
55dac3a29d716391d842fc07cdcae4c4ed14c60008ac9bb6652ae0b710e8fd6b

SHA512
659428daf585ad969c992f944a0e081be738a04c2ddebff6e82c26bc6eb4892d9e0a427d7ceebba234ca874a822bd9f28e5aaefaa8342e3479c3e90e60c800eb

Download Submit
memory/528-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/528-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/528-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/528-7-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/528-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/528-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads