tofsee | c0919826b38eb237c7bd2bd2c99a56131c143186aea9f3809dbbdc1eb222077b

Analysis

max time kernel
146s
max time network
142s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 21:01

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General

Target

2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe
Size

12.0MB
MD5

49fd5c071e54639f9f2aa0215218a542
SHA1

30c64c379a44fef501309c2ee948374cf68863e6
SHA256

c0919826b38eb237c7bd2bd2c99a56131c143186aea9f3809dbbdc1eb222077b
SHA512

3c6c25b1a57cb74fa0ea9fd11c7df699866a23215938d37ff1eff7d5cdb67fe9cccba6d0bcbfd9064acf51702566fbe09f52cead7e0c94d4eb13d45c86aec874
SSDEEP

3072:z5nbTHQC2mC+vdVWQhHPGyCsPiHMhPxO7rFI7NP6BfGrIHmll9uX4YRrVOVOVOVn:NnJjWIvGyCYq/H2Ak5uX

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\nbwxmaeh = "0"	svchost.exe

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
2828	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\nbwxmaeh\ImagePath = "C:\\Windows\\SysWOW64\\nbwxmaeh\\ruaujufl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1128	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	ruaujufl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 1128	2732	ruaujufl.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2840	sc.exe
2752	sc.exe
2756	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_49fd5c071e54639f9f2aa0215218a542_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	ruaujufl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2976	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	29
PID 2296 wrote to memory of 2976	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	29
PID 2296 wrote to memory of 2976	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	29
PID 2296 wrote to memory of 2976	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	29
PID 2296 wrote to memory of 3012	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	31
PID 2296 wrote to memory of 3012	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	31
PID 2296 wrote to memory of 3012	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	31
PID 2296 wrote to memory of 3012	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	31
PID 2296 wrote to memory of 2840	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	33
PID 2296 wrote to memory of 2840	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	33
PID 2296 wrote to memory of 2840	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	33
PID 2296 wrote to memory of 2840	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	33
PID 2296 wrote to memory of 2752	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	35
PID 2296 wrote to memory of 2752	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	35
PID 2296 wrote to memory of 2752	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	35
PID 2296 wrote to memory of 2752	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	35
PID 2296 wrote to memory of 2756	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	37
PID 2296 wrote to memory of 2756	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	37
PID 2296 wrote to memory of 2756	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	37
PID 2296 wrote to memory of 2756	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	37
PID 2296 wrote to memory of 2828	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	39
PID 2296 wrote to memory of 2828	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	39
PID 2296 wrote to memory of 2828	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	39
PID 2296 wrote to memory of 2828	2296	2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe	39
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42
PID 2732 wrote to memory of 1128	2732	ruaujufl.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbwxmaeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ruaujufl.exe" C:\Windows\SysWOW64\nbwxmaeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nbwxmaeh binPath= "C:\Windows\SysWOW64\nbwxmaeh\ruaujufl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nbwxmaeh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nbwxmaeh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- 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:2828

C:\Windows\SysWOW64\nbwxmaeh\ruaujufl.exe
C:\Windows\SysWOW64\nbwxmaeh\ruaujufl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_49fd5c071e54639f9f2aa0215218a542_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ruaujufl.exe

Filesize
12.3MB

MD5
f8d4ecaa2beeeb84912026c5c2b3e5e9

SHA1
eb970b927d6dabb81d74ea15f6f9ceb85004bc38

SHA256
a8397d80d06e2e08fc472005f30ac78574901cca3421c81ac6dfd273316ff2e6

SHA512
c3ae4c6a457359a587623d4822a85914fa57a6a35b2da15d00166bebf3a363a77412c1be772958897bbf867cc31ac10d0b759cad2d10e8b586a7aab2bd3cce71

Download Submit
memory/1128-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1128-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1128-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1128-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1128-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2296-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2296-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2296-6-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2296-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2296-8-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2296-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2296-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/2732-17-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads