tofsee | d6c45f67357a8fd894dce09c6e8719ab58bc803af55567a682c4c976619f5a06

Analysis

max time kernel
147s
max time network
119s
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_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe
Size

12.1MB
MD5

bc6e5d90c52828a3e61150cfa7b1cc0c
SHA1

1ca9759679efdee799039aa008e582cd71239575
SHA256

d6c45f67357a8fd894dce09c6e8719ab58bc803af55567a682c4c976619f5a06
SHA512

798ac75e4eabbc4dc987a1c533f26e9d43d3e27d1bca9ce38cced1bad1c7efe3ceca1d765fe47f0ee0498bd18f62ab0dcb8bd70101c2772fe188e5a0c35be87d
SSDEEP

3072:5CLVCtykRk5Kws3LQfNeBVe/KyNDrr91Q:4eyki5KnUfNeBVe/W

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\zzilfavt = "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
2736	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\zzilfavt\ImagePath = "C:\\Windows\\SysWOW64\\zzilfavt\\fzzqbkbd.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
264	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	fzzqbkbd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 264	2696	fzzqbkbd.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
3036	sc.exe
2844	sc.exe
2976	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	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.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	fzzqbkbd.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2808	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	30
PID 2876 wrote to memory of 2808	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	30
PID 2876 wrote to memory of 2808	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	30
PID 2876 wrote to memory of 2808	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	30
PID 2876 wrote to memory of 2932	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	32
PID 2876 wrote to memory of 2932	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	32
PID 2876 wrote to memory of 2932	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	32
PID 2876 wrote to memory of 2932	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	32
PID 2876 wrote to memory of 3036	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	34
PID 2876 wrote to memory of 3036	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	34
PID 2876 wrote to memory of 3036	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	34
PID 2876 wrote to memory of 3036	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	34
PID 2876 wrote to memory of 2844	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	36
PID 2876 wrote to memory of 2844	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	36
PID 2876 wrote to memory of 2844	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	36
PID 2876 wrote to memory of 2844	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	36
PID 2876 wrote to memory of 2976	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	38
PID 2876 wrote to memory of 2976	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	38
PID 2876 wrote to memory of 2976	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	38
PID 2876 wrote to memory of 2976	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	38
PID 2876 wrote to memory of 2736	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	41
PID 2876 wrote to memory of 2736	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	41
PID 2876 wrote to memory of 2736	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	41
PID 2876 wrote to memory of 2736	2876	2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe	41
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43
PID 2696 wrote to memory of 264	2696	fzzqbkbd.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zzilfavt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fzzqbkbd.exe" C:\Windows\SysWOW64\zzilfavt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zzilfavt binPath= "C:\Windows\SysWOW64\zzilfavt\fzzqbkbd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zzilfavt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zzilfavt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- 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:2736

C:\Windows\SysWOW64\zzilfavt\fzzqbkbd.exe
C:\Windows\SysWOW64\zzilfavt\fzzqbkbd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_bc6e5d90c52828a3e61150cfa7b1cc0c_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:264

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\fzzqbkbd.exe

Filesize
13.3MB

MD5
ed2384a9c28f226ba4c0e051805b0caf

SHA1
b31d40aea3590b09a32b972895adaf3b765b5169

SHA256
f25aa9d447728ded6edb56c55f8153596482a75f0127dcf5d1632724b75f50c1

SHA512
ebfe1fd2270162867a7a36cf0cddeb0334c607aa237dbb9575aaeba5dd375af1aaba6bce4ca0266b98604cb5a98751f748e23f666e0ebec48489bc209d60a1e3

Download Submit
memory/264-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/264-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/264-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2696-16-0x0000000000400000-0x0000000004A92000-memory.dmp

Filesize
70.6MB

Download
memory/2876-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2876-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2876-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2876-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2876-7-0x0000000000400000-0x0000000004A92000-memory.dmp

Filesize
70.6MB

Download
memory/2876-1-0x0000000004BE0000-0x0000000004CE0000-memory.dmp

Filesize
1024KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads