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
4644	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	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe

Executes dropped EXE 1 IoCs

pid	Process
4504	cajktpea.exe

Launches sc.exe 3 IoCs

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

pid	Process
3140	sc.exe
2032	sc.exe
3936	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1840	4428	WerFault.exe	86

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	netsh.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4428 wrote to memory of 3344	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 4428 wrote to memory of 3344	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 4428 wrote to memory of 3344	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	98
PID 4428 wrote to memory of 456	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 4428 wrote to memory of 456	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 4428 wrote to memory of 456	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	100
PID 4428 wrote to memory of 2032	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	103
PID 4428 wrote to memory of 2032	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	103
PID 4428 wrote to memory of 2032	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	103
PID 4428 wrote to memory of 3140	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	105
PID 4428 wrote to memory of 3140	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	105
PID 4428 wrote to memory of 3140	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	105
PID 4428 wrote to memory of 3936	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 4428 wrote to memory of 3936	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 4428 wrote to memory of 3936	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	107
PID 4428 wrote to memory of 4644	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	110
PID 4428 wrote to memory of 4644	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	110
PID 4428 wrote to memory of 4644	4428	2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe	110

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:4428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tawlhszm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cajktpea.exe" C:\Windows\SysWOW64\tawlhszm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tawlhszm binPath= "C:\Windows\SysWOW64\tawlhszm\cajktpea.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:2032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tawlhszm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tawlhszm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3936
- 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:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 592
  2⤵
  - Program crash
  PID:1840

C:\Windows\SysWOW64\tawlhszm\cajktpea.exe
C:\Windows\SysWOW64\tawlhszm\cajktpea.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_2b38f0d01493739cc0b4702cfe36054b_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4428 -ip 4428
1⤵
PID:1984

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\cajktpea.exe

Filesize
13.3MB

MD5
f5e4782b11ee65d8cf04f49f3457f507

SHA1
590892d416e5d72c382eafd6436ef0d5f5c27168

SHA256
8cfb4be42dd71d6b8a67f6d13b41476633ddc095282e6cfe632e784e73ab958a

SHA512
1aa1f47da7a8cc221dd06740dcf6181a585a9e6fb01daa567a290acac1f958c5ee00c16b75062a16c853b8aea4acfce3cff7f1bc832c75d4c5839292758689d1

Download Submit
memory/4428-0-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/4428-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4428-3-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4428-2-0x00000000036B0000-0x00000000037B0000-memory.dmp

Filesize
1024KB

Download
memory/4428-10-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4428-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4428-11-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download
memory/4504-8-0x0000000000400000-0x00000000033A9000-memory.dmp

Filesize
47.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads