tofsee | a6bffcb4a9a7eb5cab0789e497350262ba9ced233acb1ca2d598f756e7e47289

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 10:36

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General

Target

JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe
Size

332KB
MD5

fef1dddddde5a01cd2ed74e6c031bd23
SHA1

38a3ed6a45566821ffdb0e13558d0869f4fec077
SHA256

a6bffcb4a9a7eb5cab0789e497350262ba9ced233acb1ca2d598f756e7e47289
SHA512

0711a792ff2824e0e244d7dcf16dc92cf97d34d0c9a56f62f00fbe9e670a11923f7e7c822bdb5a6e73159bd8459a2a115d84140c606acd1e706bd931621db905
SSDEEP

6144:qutIFH/0RO0uydH3+BmV4gOj/Tz707JLEB8yA1muSE9jl+:qutIFfqVdH3+BmOBj/n70Fm8HmPi+

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\nhelyari = "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
2904	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\nhelyari\ImagePath = "C:\\Windows\\SysWOW64\\nhelyari\\jydeygjc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2892	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2228	jydeygjc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 2892	2228	jydeygjc.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2936	sc.exe
2476	sc.exe
2844	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	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.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	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	jydeygjc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 2548	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	31
PID 2572 wrote to memory of 2548	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	31
PID 2572 wrote to memory of 2548	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	31
PID 2572 wrote to memory of 2548	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	31
PID 2572 wrote to memory of 2016	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	33
PID 2572 wrote to memory of 2016	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	33
PID 2572 wrote to memory of 2016	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	33
PID 2572 wrote to memory of 2016	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	33
PID 2572 wrote to memory of 2936	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	35
PID 2572 wrote to memory of 2936	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	35
PID 2572 wrote to memory of 2936	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	35
PID 2572 wrote to memory of 2936	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	35
PID 2572 wrote to memory of 2476	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	37
PID 2572 wrote to memory of 2476	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	37
PID 2572 wrote to memory of 2476	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	37
PID 2572 wrote to memory of 2476	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	37
PID 2572 wrote to memory of 2844	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	39
PID 2572 wrote to memory of 2844	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	39
PID 2572 wrote to memory of 2844	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	39
PID 2572 wrote to memory of 2844	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	39
PID 2572 wrote to memory of 2904	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	41
PID 2572 wrote to memory of 2904	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	41
PID 2572 wrote to memory of 2904	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	41
PID 2572 wrote to memory of 2904	2572	JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe	41
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44
PID 2228 wrote to memory of 2892	2228	jydeygjc.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nhelyari\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jydeygjc.exe" C:\Windows\SysWOW64\nhelyari\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nhelyari binPath= "C:\Windows\SysWOW64\nhelyari\jydeygjc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nhelyari "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nhelyari
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- 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:2904

C:\Windows\SysWOW64\nhelyari\jydeygjc.exe
C:\Windows\SysWOW64\nhelyari\jydeygjc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fef1dddddde5a01cd2ed74e6c031bd23.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- 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:2892

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\jydeygjc.exe

Filesize
14.9MB

MD5
c03c1792d864f8c1002adeb0223ab868

SHA1
ad031672567dd4b8535ac2c02b462e02aa0eea4f

SHA256
7b24acef27be4759cf934f83d2aac3fda14fee372265b69b64ff5128a733b9d7

SHA512
4472b42a2f2a3287f49032af051286a95cf647f343276317044aff54485716394ddfbcd6134228d9c8b349d9af0a35b9eea821be2a75cae95f97c0257d9890c7

Download Submit
memory/2228-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2572-7-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2572-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2572-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2572-6-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2572-1-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/2572-2-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2892-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2892-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2892-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads