tofsee | 57c5476b2f41ec87a6b74153c52b442d47172ad8f59a578e4ac6e902dec3be3f

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 08:32

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General

Target

JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
Size

10.4MB
MD5

fc3bb27a0cf68b519a1ff98126da4083
SHA1

d52434e6d7326478e4d2931b379ed30c31ead569
SHA256

57c5476b2f41ec87a6b74153c52b442d47172ad8f59a578e4ac6e902dec3be3f
SHA512

8fded19f127deaa5d52d8c88b89009ebf1626ada44556fcc50e9cd048c399c31d89668232db2790afbbbf0072cb5806a7f00e92391c0815f39211cbf9c7ffcdc
SSDEEP

3072:EOsUA8KZQ/IxsPVg4nkvzaHWgSjqdF0w2Uyopz9ZeCqJXXfehv1Ijoxw9xkaaaaK:eUA8GV2e4nYWHEjqPt9cCqxmhv1pxQ

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\fpnvgoox = "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
2604	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\fpnvgoox\ImagePath = "C:\\Windows\\SysWOW64\\fpnvgoox\\ejfxvyk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2316	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2552	ejfxvyk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2552 set thread context of 2316	2552	ejfxvyk.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2576	sc.exe
2676	sc.exe
2836	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	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	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
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	ejfxvyk.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2772	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	30
PID 2124 wrote to memory of 2772	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	30
PID 2124 wrote to memory of 2772	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	30
PID 2124 wrote to memory of 2772	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	30
PID 2124 wrote to memory of 2360	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	32
PID 2124 wrote to memory of 2360	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	32
PID 2124 wrote to memory of 2360	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	32
PID 2124 wrote to memory of 2360	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	32
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	34
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	34
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	34
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	34
PID 2124 wrote to memory of 2676	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	36
PID 2124 wrote to memory of 2676	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	36
PID 2124 wrote to memory of 2676	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	36
PID 2124 wrote to memory of 2676	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	36
PID 2124 wrote to memory of 2836	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	38
PID 2124 wrote to memory of 2836	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	38
PID 2124 wrote to memory of 2836	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	38
PID 2124 wrote to memory of 2836	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	38
PID 2124 wrote to memory of 2604	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	41
PID 2124 wrote to memory of 2604	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	41
PID 2124 wrote to memory of 2604	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	41
PID 2124 wrote to memory of 2604	2124	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	41
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43
PID 2552 wrote to memory of 2316	2552	ejfxvyk.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fpnvgoox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ejfxvyk.exe" C:\Windows\SysWOW64\fpnvgoox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fpnvgoox binPath= "C:\Windows\SysWOW64\fpnvgoox\ejfxvyk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fpnvgoox "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fpnvgoox
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- 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:2604

C:\Windows\SysWOW64\fpnvgoox\ejfxvyk.exe
C:\Windows\SysWOW64\fpnvgoox\ejfxvyk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- 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:2316

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\ejfxvyk.exe

Filesize
12.3MB

MD5
0c24a9cae9970d3b4860c1e46bba0fc8

SHA1
b1dfe7680d9c07e18b2240c6324e2670dd58627c

SHA256
0b41124a707e1065de8db886da178bb783c6911749582b4fb44d4e74d462017c

SHA512
9c555889a22836f63e663e46d260468f294aa4fad90921e2ce5919c15119cddb8fc0ba1c54e1f281546dfa4df801d8dc9acf846620f916620552b0a79109268a

Download Submit
memory/2124-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2124-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2124-2-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2124-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2124-9-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2124-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2316-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2316-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2316-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2316-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2316-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2552-17-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads