tofsee | 73f81f5867e6753b4b6c743844fc5e9c8e9c95c69da349b07d53a7d9abab7ffa

Analysis

max time kernel
151s
max time network
138s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:12

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General

Target

2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe
Size

10.8MB
MD5

018575a39ffcc1b59d708cff951a1f62
SHA1

fbe47885a72c5a830f12446857f374ad64b7c8ec
SHA256

73f81f5867e6753b4b6c743844fc5e9c8e9c95c69da349b07d53a7d9abab7ffa
SHA512

39ce9e9bfc86960ed325ebdac526317bdf2b66f1103bbfa7d47fefda83e385413f673ae5110feade0a331c21397d2626c5a7bb32e37a1aa23f7a92f9f3cbaf6c
SSDEEP

49152:4zTT2kX2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2X2Xa:4zv2

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\mpenthib = "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
3024	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\mpenthib\ImagePath = "C:\\Windows\\SysWOW64\\mpenthib\\hyubsrvz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2640	hyubsrvz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2640 set thread context of 2804	2640	hyubsrvz.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2780	sc.exe
2900	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 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	2025-03-30_018575a39ffcc1b59d708cff951a1f62_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	hyubsrvz.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 1040	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	29
PID 2264 wrote to memory of 1040	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	29
PID 2264 wrote to memory of 1040	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	29
PID 2264 wrote to memory of 1040	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	29
PID 2264 wrote to memory of 2816	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	31
PID 2264 wrote to memory of 2816	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	31
PID 2264 wrote to memory of 2816	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	31
PID 2264 wrote to memory of 2816	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	31
PID 2264 wrote to memory of 2780	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	33
PID 2264 wrote to memory of 2780	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	33
PID 2264 wrote to memory of 2780	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	33
PID 2264 wrote to memory of 2780	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	33
PID 2264 wrote to memory of 2900	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	35
PID 2264 wrote to memory of 2900	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	35
PID 2264 wrote to memory of 2900	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	35
PID 2264 wrote to memory of 2900	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	35
PID 2264 wrote to memory of 2756	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	37
PID 2264 wrote to memory of 2756	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	37
PID 2264 wrote to memory of 2756	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	37
PID 2264 wrote to memory of 2756	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	37
PID 2264 wrote to memory of 3024	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	40
PID 2264 wrote to memory of 3024	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	40
PID 2264 wrote to memory of 3024	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	40
PID 2264 wrote to memory of 3024	2264	2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe	40
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42
PID 2640 wrote to memory of 2804	2640	hyubsrvz.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mpenthib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hyubsrvz.exe" C:\Windows\SysWOW64\mpenthib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mpenthib binPath= "C:\Windows\SysWOW64\mpenthib\hyubsrvz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mpenthib "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mpenthib
  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:3024

C:\Windows\SysWOW64\mpenthib\hyubsrvz.exe
C:\Windows\SysWOW64\mpenthib\hyubsrvz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_018575a39ffcc1b59d708cff951a1f62_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- 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:2804

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\hyubsrvz.exe

Filesize
11.6MB

MD5
022f3908c70b4c8739e6b48d3db6c7e8

SHA1
135b0c77ddd3ca527921ee13f586fba173b00871

SHA256
79f06ac66bd0a3313713f58d43b65dad40f271d8515be03f0c3ce86b39b42322

SHA512
5178af615ede563e717bd55b0e3ab9d5c3cfd1c28c1511914b1443e88a29200419ce92a805802ae71022849167716041f1d5bbd8d6af6fb1fc4e0f2f07363025

Download Submit
memory/2264-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2264-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2264-6-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2264-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2264-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2264-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2640-18-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2804-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads