tofsee | d16cb42179c40020d71bfae3bc76583874fc9908cb5edc699b5797263f29ba69

General

Target

2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe
Size

10.9MB
MD5

5710a1f1113593d7f17cf60dab5cd8d9
SHA1

2c93853e7ba2a12eb705c140f9477a1860ea2700
SHA256

d16cb42179c40020d71bfae3bc76583874fc9908cb5edc699b5797263f29ba69
SHA512

f9a98100ced7072a525dca95ce2fb2318284fe9be24da6189761e09129882846376ef137eaeff4938740abfdcd0d53d473db90913e6ff2c56b8c768e5a2a761b
SSDEEP

3072:XZnbTHQC2mC+vdVcQuHAGSr9viHWhPxO796t6B7Aw5S2FxmEBVrVrVrVrVrVrVrS:pnJjcngGSrlqFp6kCyxTa

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
2828	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_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	wvjlzwxp.exe

Launches sc.exe 3 IoCs

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

pid	Process
1932	sc.exe
3388	sc.exe
2164	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
384	2756	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_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.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 2756 wrote to memory of 4988	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	109
PID 2756 wrote to memory of 4988	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	109
PID 2756 wrote to memory of 4988	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	109
PID 2756 wrote to memory of 4944	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	111
PID 2756 wrote to memory of 4944	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	111
PID 2756 wrote to memory of 4944	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	111
PID 2756 wrote to memory of 1932	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	113
PID 2756 wrote to memory of 1932	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	113
PID 2756 wrote to memory of 1932	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	113
PID 2756 wrote to memory of 3388	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	115
PID 2756 wrote to memory of 3388	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	115
PID 2756 wrote to memory of 3388	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	115
PID 2756 wrote to memory of 2164	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	117
PID 2756 wrote to memory of 2164	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	117
PID 2756 wrote to memory of 2164	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	117
PID 2756 wrote to memory of 2828	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	120
PID 2756 wrote to memory of 2828	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	120
PID 2756 wrote to memory of 2828	2756	2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe	120

C:\Users\Admin\AppData\Local\Temp\2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rretpdcl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wvjlzwxp.exe" C:\Windows\SysWOW64\rretpdcl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rretpdcl binPath= "C:\Windows\SysWOW64\rretpdcl\wvjlzwxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rretpdcl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rretpdcl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2164
- 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:2828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 668
  2⤵
  - Program crash
  PID:384

C:\Windows\SysWOW64\rretpdcl\wvjlzwxp.exe
C:\Windows\SysWOW64\rretpdcl\wvjlzwxp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5710a1f1113593d7f17cf60dab5cd8d9_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Executes dropped EXE
PID:2824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2756 -ip 2756
1⤵
PID:2836

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\wvjlzwxp.exe

Filesize
12.0MB

MD5
79c7d54f7f7d86f80eac1f1eb62ba56d

SHA1
64ef9e9f1eb60c329e7b822c75c6f40859413011

SHA256
4f49781ca96532b5a590681841b8d816ee48b26fab4caaf73edc25e3926ac2b5

SHA512
efd715f736b1833bebace39062006c389cc631b24d2c0696b458896808312663ad351309cc68b496c134facc8a59e7707e19e9126ac07fabfcf61a46a8142966

Download Submit
memory/2756-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2756-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/2756-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2756-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2756-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2756-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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