tofsee | 1003769505d0335f9b2a2a45944946d4cb0396cef7c5021328f7deb5ae4ec35c

General

Target

2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe
Size

14.2MB
MD5

e262ec8e9baff3b366098f7f157e2d34
SHA1

4eafb2817a5f837e6cdbf86e9b09d27965f965a1
SHA256

1003769505d0335f9b2a2a45944946d4cb0396cef7c5021328f7deb5ae4ec35c
SHA512

1a9ed6bb9c16666a8063146c9bd750e60b49547df91cdcb40ce265818dc2c50c0f444b3e61e3c8dc6ec8604b1286bba726746793f544d0557796d851ca2ddaa6
SSDEEP

49152:Cf5UwzWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWG:Cf

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
4884	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\lprewawy\ImagePath = "C:\\Windows\\SysWOW64\\lprewawy\\gpjogfaw.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_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
3992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4936	gpjogfaw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 3992	4936	gpjogfaw.exe	112

Launches sc.exe 3 IoCs

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

pid	Process
3940	sc.exe
4692	sc.exe
4808	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
3492	5384	WerFault.exe	85
2088	4936	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	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	gpjogfaw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5384 wrote to memory of 4684	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	93
PID 5384 wrote to memory of 4684	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	93
PID 5384 wrote to memory of 4684	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	93
PID 5384 wrote to memory of 1988	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	95
PID 5384 wrote to memory of 1988	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	95
PID 5384 wrote to memory of 1988	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	95
PID 5384 wrote to memory of 3940	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	97
PID 5384 wrote to memory of 3940	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	97
PID 5384 wrote to memory of 3940	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	97
PID 5384 wrote to memory of 4692	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	100
PID 5384 wrote to memory of 4692	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	100
PID 5384 wrote to memory of 4692	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	100
PID 5384 wrote to memory of 4808	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	102
PID 5384 wrote to memory of 4808	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	102
PID 5384 wrote to memory of 4808	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	102
PID 5384 wrote to memory of 4884	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	105
PID 5384 wrote to memory of 4884	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	105
PID 5384 wrote to memory of 4884	5384	2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe	105
PID 4936 wrote to memory of 3992	4936	gpjogfaw.exe	112
PID 4936 wrote to memory of 3992	4936	gpjogfaw.exe	112
PID 4936 wrote to memory of 3992	4936	gpjogfaw.exe	112
PID 4936 wrote to memory of 3992	4936	gpjogfaw.exe	112
PID 4936 wrote to memory of 3992	4936	gpjogfaw.exe	112

C:\Users\Admin\AppData\Local\Temp\2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lprewawy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gpjogfaw.exe" C:\Windows\SysWOW64\lprewawy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lprewawy binPath= "C:\Windows\SysWOW64\lprewawy\gpjogfaw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e262ec8e9baff3b366098f7f157e2d34_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:3940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lprewawy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lprewawy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4808
- 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:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5384 -s 1200
  2⤵
  - Program crash
  PID:3492

C:\Windows\SysWOW64\lprewawy\gpjogfaw.exe
C:\Windows\SysWOW64\lprewawy\gpjogfaw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_e262ec8e9baff3b366098f7f157e2d34_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 516
  2⤵
  - Program crash
  PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5384 -ip 5384
1⤵
PID:3536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4936 -ip 4936
1⤵
PID:1456

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\gpjogfaw.exe

Filesize
12.7MB

MD5
f971bdc81e5114dc84a6a2628c79e712

SHA1
320b2c0a117f301f621b32c66802f3a9d1260492

SHA256
f63483e36adef25b52b296322332daee3e1a51edd7ecfb26725f4355149440df

SHA512
4bb2edc5caefd9cc948902fd2849eeb715b98b511ea2b62edbe94788656c913e96eceaae6eabeb396c822049d485d28f9c51acfc76bf0ce2f9c219bc3850fd73

Download Submit
memory/3992-14-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/3992-17-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/3992-16-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/4936-19-0x0000000000400000-0x0000000002470000-memory.dmp

Filesize
32.4MB

Download
memory/4936-8-0x0000000000400000-0x0000000002470000-memory.dmp

Filesize
32.4MB

Download
memory/5384-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5384-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5384-11-0x0000000000400000-0x0000000002470000-memory.dmp

Filesize
32.4MB

Download
memory/5384-10-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download
memory/5384-0-0x0000000000400000-0x0000000002470000-memory.dmp

Filesize
32.4MB

Download
memory/5384-3-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download
memory/5384-2-0x0000000002540000-0x0000000002640000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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