tofsee | 603f6cbb18c0253ad73d52cf235f38be4bda4f3286e0a13bd65dfb769fb74619

General

Target

2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe
Size

14.9MB
MD5

1dec88a9b86093b618e7e077758fbcbb
SHA1

fdd4acbbb8665306ff9b04895793b4195c495c24
SHA256

603f6cbb18c0253ad73d52cf235f38be4bda4f3286e0a13bd65dfb769fb74619
SHA512

8f517bc6c07d0dfd7f6fc4d461bdb6adcd1760d09e88a07b43af0180fb63e3a340dbf606cfd18a2d56cecf113d3b3f49b83be554666101f68b928f3a2db4447c
SSDEEP

3072:dl3t+DDATZKP7Ny5Da8nlGAYSjmhpsb9i1UjQJP+Xn2Dg7NVXewtwtwtwtwtwtwu:dzyeKP7qa8VmhpspedP+X2Dg7H

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
1336	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\tjluwgei\ImagePath = "C:\\Windows\\SysWOW64\\tjluwgei\\gtfcvinx.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	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
5392	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4336	gtfcvinx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4336 set thread context of 5392	4336	gtfcvinx.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4884	sc.exe
4668	sc.exe
4772	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 4 IoCs

pid	pid_target	Process	procid_target
5060	4336	WerFault.exe	99
5064	2632	WerFault.exe	85
5096	4336	WerFault.exe	99
5584	4336	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gtfcvinx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_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
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 2632 wrote to memory of 5248	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	89
PID 2632 wrote to memory of 5248	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	89
PID 2632 wrote to memory of 5248	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	89
PID 2632 wrote to memory of 3260	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	91
PID 2632 wrote to memory of 3260	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	91
PID 2632 wrote to memory of 3260	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	91
PID 2632 wrote to memory of 4668	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	93
PID 2632 wrote to memory of 4668	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	93
PID 2632 wrote to memory of 4668	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	93
PID 2632 wrote to memory of 4772	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	95
PID 2632 wrote to memory of 4772	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	95
PID 2632 wrote to memory of 4772	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	95
PID 2632 wrote to memory of 4884	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	97
PID 2632 wrote to memory of 4884	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	97
PID 2632 wrote to memory of 4884	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	97
PID 4336 wrote to memory of 5392	4336	gtfcvinx.exe	100
PID 4336 wrote to memory of 5392	4336	gtfcvinx.exe	100
PID 4336 wrote to memory of 5392	4336	gtfcvinx.exe	100
PID 4336 wrote to memory of 5392	4336	gtfcvinx.exe	100
PID 4336 wrote to memory of 5392	4336	gtfcvinx.exe	100
PID 2632 wrote to memory of 1336	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	103
PID 2632 wrote to memory of 1336	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	103
PID 2632 wrote to memory of 1336	2632	2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjluwgei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gtfcvinx.exe" C:\Windows\SysWOW64\tjluwgei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tjluwgei binPath= "C:\Windows\SysWOW64\tjluwgei\gtfcvinx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tjluwgei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tjluwgei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4884
- 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:1336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 1184
  2⤵
  - Program crash
  PID:5064

C:\Windows\SysWOW64\tjluwgei\gtfcvinx.exe
C:\Windows\SysWOW64\tjluwgei\gtfcvinx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_1dec88a9b86093b618e7e077758fbcbb_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 508
  2⤵
  - Program crash
  PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 532
  2⤵
  - Program crash
  PID:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 528
  2⤵
  - Program crash
  PID:5584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4336 -ip 4336
1⤵
PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2632 -ip 2632
1⤵
PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4336 -ip 4336
1⤵
PID:6092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4336 -ip 4336
1⤵
PID:3444

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\gtfcvinx.exe

Filesize
14.7MB

MD5
7ab8576f391a174383ebb339ef12f446

SHA1
7e0d3a907ca10046afd7fe88f99902692a7a4c4a

SHA256
46c0318f85d6f594ed8b1e69275bdf67f3bdd52487e3c5135e15dc4fa8609faf

SHA512
3b91e9d1e1b6bc825cce7310b8a9aae311b7c25b16f53d972c7e85336f46cdfb5aa672cec0203b2c673b388e481388cfd27f64c530e87a885f68178d54454f6b

Download Submit
memory/2632-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2632-2-0x00000000006B0000-0x00000000006C3000-memory.dmp

Filesize
76KB

Download
memory/2632-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2632-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/2632-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2632-16-0x00000000006B0000-0x00000000006C3000-memory.dmp

Filesize
76KB

Download
memory/4336-19-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4336-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5392-11-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/5392-14-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/5392-20-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/5392-21-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download
memory/5392-22-0x0000000000540000-0x0000000000555000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads