tofsee | 0ba662b755e3d09266d950b4632708305b20d306a93c0da47e2a966f8884c5d1

General

Target

2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe
Size

10.3MB
MD5

389e7e05d4886aca8078bd6cda6c53a5
SHA1

94e78b74763ce6d18fba23dc4c43410e3e5d809c
SHA256

0ba662b755e3d09266d950b4632708305b20d306a93c0da47e2a966f8884c5d1
SHA512

14065b530e595ca4665f84afc6d8501dc510cb941656fdc88131d166d5dfb778b5b2d197175dec1f8ec7cf0e2ab40883600fb090cf353c5dbfc8ca4fa1e753ff
SSDEEP

12288:zMLpU0QKuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiV:YLpcKU

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
5004	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\syrwfciq\ImagePath = "C:\\Windows\\SysWOW64\\syrwfciq\\gxfdnipd.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-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
6140	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5000	gxfdnipd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5000 set thread context of 6140	5000	gxfdnipd.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4692	sc.exe
4656	sc.exe
436	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
4880	3376	WerFault.exe	85
4884	5000	WerFault.exe	99

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	gxfdnipd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3376 wrote to memory of 3840	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	89
PID 3376 wrote to memory of 3840	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	89
PID 3376 wrote to memory of 3840	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	89
PID 3376 wrote to memory of 2204	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	91
PID 3376 wrote to memory of 2204	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	91
PID 3376 wrote to memory of 2204	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	91
PID 3376 wrote to memory of 4692	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	93
PID 3376 wrote to memory of 4692	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	93
PID 3376 wrote to memory of 4692	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	93
PID 3376 wrote to memory of 4656	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	95
PID 3376 wrote to memory of 4656	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	95
PID 3376 wrote to memory of 4656	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	95
PID 3376 wrote to memory of 436	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	97
PID 3376 wrote to memory of 436	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	97
PID 3376 wrote to memory of 436	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	97
PID 5000 wrote to memory of 6140	5000	gxfdnipd.exe	100
PID 5000 wrote to memory of 6140	5000	gxfdnipd.exe	100
PID 5000 wrote to memory of 6140	5000	gxfdnipd.exe	100
PID 5000 wrote to memory of 6140	5000	gxfdnipd.exe	100
PID 5000 wrote to memory of 6140	5000	gxfdnipd.exe	100
PID 3376 wrote to memory of 5004	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	105
PID 3376 wrote to memory of 5004	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	105
PID 3376 wrote to memory of 5004	3376	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\syrwfciq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gxfdnipd.exe" C:\Windows\SysWOW64\syrwfciq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create syrwfciq binPath= "C:\Windows\SysWOW64\syrwfciq\gxfdnipd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description syrwfciq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start syrwfciq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:436
- 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:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3376 -s 644
  2⤵
  - Program crash
  PID:4880

C:\Windows\SysWOW64\syrwfciq\gxfdnipd.exe
C:\Windows\SysWOW64\syrwfciq\gxfdnipd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5000
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:6140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 516
  2⤵
  - Program crash
  PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5000 -ip 5000
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3376 -ip 3376
1⤵
PID:3612

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\gxfdnipd.exe

Filesize
13.0MB

MD5
23a99c72cc48fec02a2a6e945b50de49

SHA1
8da75ae084f4738447b08bb736dc738d842c367e

SHA256
f893f233d4d3808dae56341d482c74e323164e0cf00640182128aae6d861c156

SHA512
88e3d37e0879a74a61736e17c57ae5b26014d94347ac6284c4fcdd601e7b56de8e64b7b5d2be43f68bd9c40ad3d495f78392a7380f136d93ff21d2d718fd6925

Download Submit
memory/3376-18-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3376-2-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3376-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/3376-17-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3376-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5000-10-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/5000-16-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/5000-8-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/5000-9-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/6140-14-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/6140-11-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/6140-20-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/6140-21-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/6140-22-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads