tofsee | b7d7a39f5621f9e8844461563807c51d89433ffc61b322864d416db80d912569

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 03:21

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General

Target

JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe
Size

10.5MB
MD5

f5954cce413ce2a9efc23a5305119086
SHA1

f32dc47cfbbeb1eda1346c75e57a920564d64357
SHA256

b7d7a39f5621f9e8844461563807c51d89433ffc61b322864d416db80d912569
SHA512

141cc87398d9417ad5e87c314f842de6c1cf4d8aff79f70602f8beea7d8adcf93102ed2a092b4aa64b03b49f7228306f7f3fd6cfa152471ef60e26f60fa0f9d3
SSDEEP

6144:dh3STswjk6CQXYrqNX53fVhBIixhIKIHFmfpBggggggggggggggggggggggggggg:vSbA6forqH3fPBTI/H

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

176.111.174.19

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

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\nuybnik = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2620	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\nuybnik\ImagePath = "C:\\Windows\\SysWOW64\\nuybnik\\ytpwisgv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2056	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	ytpwisgv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2580 set thread context of 2056	2580	ytpwisgv.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2596	sc.exe
2624	sc.exe
2808	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ytpwisgv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2780	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	30
PID 2708 wrote to memory of 2780	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	30
PID 2708 wrote to memory of 2780	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	30
PID 2708 wrote to memory of 2780	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	30
PID 2708 wrote to memory of 2940	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	32
PID 2708 wrote to memory of 2940	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	32
PID 2708 wrote to memory of 2940	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	32
PID 2708 wrote to memory of 2940	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	32
PID 2708 wrote to memory of 2808	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	34
PID 2708 wrote to memory of 2808	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	34
PID 2708 wrote to memory of 2808	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	34
PID 2708 wrote to memory of 2808	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	34
PID 2708 wrote to memory of 2596	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	36
PID 2708 wrote to memory of 2596	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	36
PID 2708 wrote to memory of 2596	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	36
PID 2708 wrote to memory of 2596	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	36
PID 2708 wrote to memory of 2624	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	38
PID 2708 wrote to memory of 2624	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	38
PID 2708 wrote to memory of 2624	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	38
PID 2708 wrote to memory of 2624	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	38
PID 2708 wrote to memory of 2620	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	41
PID 2708 wrote to memory of 2620	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	41
PID 2708 wrote to memory of 2620	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	41
PID 2708 wrote to memory of 2620	2708	JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe	41
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43
PID 2580 wrote to memory of 2056	2580	ytpwisgv.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nuybnik\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ytpwisgv.exe" C:\Windows\SysWOW64\nuybnik\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nuybnik binPath= "C:\Windows\SysWOW64\nuybnik\ytpwisgv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nuybnik "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nuybnik
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2624
- 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:2620

C:\Windows\SysWOW64\nuybnik\ytpwisgv.exe
C:\Windows\SysWOW64\nuybnik\ytpwisgv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5954cce413ce2a9efc23a5305119086.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- 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:2056

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\ytpwisgv.exe

Filesize
11.0MB

MD5
cdfcdccea6653fc274ff274db6841c5c

SHA1
9692ddf761b2953736c209bb43c90c1f1a3576c0

SHA256
ab5328abc54e8a100b0c476f424ceadb741a42788c1bd4de2e8d7c399c83b250

SHA512
3457d978fa33ce4932b74bbc24cb776f6a6ed0954dec11b47fc11bebeb2c8edfc36f0a19f272dce8fa113575ad414a166681e2dedbbe637d87debe3b4586423f

Download Submit
memory/2056-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2056-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2056-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2056-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2056-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2580-17-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2708-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2708-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2708-8-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2708-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads