tofsee | d7ffb4ed6f97e42e499712522f5bdb5ce2452571aff71236d1005419691ec13b

General

Target

2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe
Size

13.8MB
MD5

2b38f0d01493739cc0b4702cfe36054b
SHA1

c106bfc42bf39270eee13ad6412e62e07a2b6d6d
SHA256

d7ffb4ed6f97e42e499712522f5bdb5ce2452571aff71236d1005419691ec13b
SHA512

198743360c536337959ad79d441551e65aa345104cfc02d9268c389ba40785bb3604858f59f226777cc773c09e5ac752c9e29c1104d7bf2d8c8e2b7db25dc553
SSDEEP

49152:3/Luuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuus:3w

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
4568	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\qtijxjt\ImagePath = "C:\\Windows\\SysWOW64\\qtijxjt\\tcwbtsnj.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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
3200	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	tcwbtsnj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 3200	2172	tcwbtsnj.exe	121

Launches sc.exe 3 IoCs

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

pid	Process
5056	sc.exe
5192	sc.exe
3728	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 2 IoCs

pid	pid_target	Process	procid_target
4204	432	WerFault.exe	85
6084	2172	WerFault.exe	106

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tcwbtsnj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 4192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	96
PID 432 wrote to memory of 4192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	96
PID 432 wrote to memory of 4192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	96
PID 432 wrote to memory of 5076	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 432 wrote to memory of 5076	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 432 wrote to memory of 5076	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 432 wrote to memory of 5056	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 432 wrote to memory of 5056	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 432 wrote to memory of 5056	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 432 wrote to memory of 5192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	102
PID 432 wrote to memory of 5192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	102
PID 432 wrote to memory of 5192	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	102
PID 432 wrote to memory of 3728	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	104
PID 432 wrote to memory of 3728	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	104
PID 432 wrote to memory of 3728	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	104
PID 432 wrote to memory of 4568	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 432 wrote to memory of 4568	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 432 wrote to memory of 4568	432	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 2172 wrote to memory of 3200	2172	tcwbtsnj.exe	121
PID 2172 wrote to memory of 3200	2172	tcwbtsnj.exe	121
PID 2172 wrote to memory of 3200	2172	tcwbtsnj.exe	121
PID 2172 wrote to memory of 3200	2172	tcwbtsnj.exe	121
PID 2172 wrote to memory of 3200	2172	tcwbtsnj.exe	121

C:\Users\Admin\AppData\Local\Temp\2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:432
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qtijxjt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe" C:\Windows\SysWOW64\qtijxjt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qtijxjt binPath= "C:\Windows\SysWOW64\qtijxjt\tcwbtsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qtijxjt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qtijxjt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3728
- 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:4568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 432 -s 664
  2⤵
  - Program crash
  PID:4204

C:\Windows\SysWOW64\qtijxjt\tcwbtsnj.exe
C:\Windows\SysWOW64\qtijxjt\tcwbtsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 508
  2⤵
  - Program crash
  PID:6084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 432 -ip 432
1⤵
PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2172 -ip 2172
1⤵
PID:1032

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\tcwbtsnj.exe

Filesize
13.4MB

MD5
8e57aea92445b4e05dc87e7926891813

SHA1
4d16ad2121ead0a6e3da06967946e6816d5c730d

SHA256
7c09bb072c09c6b60ae23321fa8bf2d6e8ec1a430ab6ba7ec5333b469718c0b4

SHA512
7959ddcdde691c4aa29dde49ca5411f88e687bb9a5db20e4130fef168e1612b19f41d2a2b15e40b4c636e9c0f4f98b2969cb7f119b15484797a90ee425d57cc1

Download Submit
memory/432-10-0x0000000003510000-0x0000000003523000-memory.dmp

Filesize
76KB

Download
memory/432-3-0x0000000003510000-0x0000000003523000-memory.dmp

Filesize
76KB

Download
memory/432-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/432-2-0x00000000036F0000-0x00000000037F0000-memory.dmp

Filesize
1024KB

Download
memory/432-0-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/432-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/432-11-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/2172-8-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/2172-18-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/3200-14-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/3200-16-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/3200-17-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads