tofsee | 00f0baa85e6ff72bae73389b37b84171bc0bb4f8b599fc58afaa65578f16e793

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:13

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General

Target

2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe
Size

11.1MB
MD5

f5d41f5e256ffe9d02a1c075ef203801
SHA1

4fe639d7a221b0d7a2453b35656b378eb9a4bc10
SHA256

00f0baa85e6ff72bae73389b37b84171bc0bb4f8b599fc58afaa65578f16e793
SHA512

3f878feaa54111c9978cd29e2d0a9bd2f1df920747462ebe9d78f6d55a5318c3d14f48411919be81af643afba780db55c3a43e99f8754b6d042244c14095e754
SSDEEP

12288:3QvccP/JGo5IdddddddddddddddddddddddddddddddddddddddddddddddddddV:gvcMAQY

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\ozffhyxl = "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
2092	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\ozffhyxl\ImagePath = "C:\\Windows\\SysWOW64\\ozffhyxl\\oaznyiqk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2096	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2896	oaznyiqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 2096	2896	oaznyiqk.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2324	sc.exe
2704	sc.exe
2720	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

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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oaznyiqk.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 1812	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	31
PID 2948 wrote to memory of 1812	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	31
PID 2948 wrote to memory of 1812	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	31
PID 2948 wrote to memory of 1812	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	31
PID 2948 wrote to memory of 1164	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	33
PID 2948 wrote to memory of 1164	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	33
PID 2948 wrote to memory of 1164	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	33
PID 2948 wrote to memory of 1164	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	33
PID 2948 wrote to memory of 2324	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	35
PID 2948 wrote to memory of 2324	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	35
PID 2948 wrote to memory of 2324	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	35
PID 2948 wrote to memory of 2324	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	35
PID 2948 wrote to memory of 2704	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	37
PID 2948 wrote to memory of 2704	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	37
PID 2948 wrote to memory of 2704	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	37
PID 2948 wrote to memory of 2704	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	37
PID 2948 wrote to memory of 2720	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	39
PID 2948 wrote to memory of 2720	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	39
PID 2948 wrote to memory of 2720	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	39
PID 2948 wrote to memory of 2720	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	39
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2896 wrote to memory of 2096	2896	oaznyiqk.exe	42
PID 2948 wrote to memory of 2092	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	43
PID 2948 wrote to memory of 2092	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	43
PID 2948 wrote to memory of 2092	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	43
PID 2948 wrote to memory of 2092	2948	2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ozffhyxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oaznyiqk.exe" C:\Windows\SysWOW64\ozffhyxl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ozffhyxl binPath= "C:\Windows\SysWOW64\ozffhyxl\oaznyiqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ozffhyxl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ozffhyxl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- 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:2092

C:\Windows\SysWOW64\ozffhyxl\oaznyiqk.exe
C:\Windows\SysWOW64\ozffhyxl\oaznyiqk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_f5d41f5e256ffe9d02a1c075ef203801_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- 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:2096

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\oaznyiqk.exe

Filesize
12.2MB

MD5
388a10444fb58a133c40a74ce13c4d89

SHA1
3cb8758e29f487c2eddce1d8d9456d215ed37e27

SHA256
7ee6a4e77a5e9fdc47d59f95ffeca5b3d82e7e056a13fb00581cf5f7f79e4c5a

SHA512
996b63c012e5e34be51bbc738085312287693f68a04d523cd3a714176150ca1b60545f0190877cd923003ce438c354adda4ab0417a2259a322ee21110388aca9

Download Submit
memory/2096-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2096-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2096-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2096-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2096-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2948-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/2948-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2948-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2948-15-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2948-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2948-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads