tofsee | 307644b1154391b4f425896da8efd9480fb3dda0f56c633b08c32058f5b469fa

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 10:50

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General

Target

JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe
Size

10.1MB
MD5

ff3556fcc81946e1a83ab271568bbd36
SHA1

2e74da5aec95c19c0521f80b0d019058c5fa2fad
SHA256

307644b1154391b4f425896da8efd9480fb3dda0f56c633b08c32058f5b469fa
SHA512

c4c583736516d16ef249169af8668dde9e7e06cc534538c68e594bd68ca284784f5c766db8cb796669362bf1816e58d1790b38ffe757cf0a08ed4bb69d890eb6
SSDEEP

98304:qC+PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP/:p

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\fmciwkvd = "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
3016	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\fmciwkvd\ImagePath = "C:\\Windows\\SysWOW64\\fmciwkvd\\gvieqpiu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2688	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	gvieqpiu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 2688	3012	gvieqpiu.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2840	sc.exe
2860	sc.exe
2816	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	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	gvieqpiu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 2336 wrote to memory of 2296	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	29
PID 2336 wrote to memory of 2296	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	29
PID 2336 wrote to memory of 2296	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	29
PID 2336 wrote to memory of 2296	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	29
PID 2336 wrote to memory of 2260	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	31
PID 2336 wrote to memory of 2260	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	31
PID 2336 wrote to memory of 2260	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	31
PID 2336 wrote to memory of 2260	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	31
PID 2336 wrote to memory of 2860	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	33
PID 2336 wrote to memory of 2860	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	33
PID 2336 wrote to memory of 2860	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	33
PID 2336 wrote to memory of 2860	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	33
PID 2336 wrote to memory of 2816	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	35
PID 2336 wrote to memory of 2816	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	35
PID 2336 wrote to memory of 2816	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	35
PID 2336 wrote to memory of 2816	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	35
PID 2336 wrote to memory of 2840	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	37
PID 2336 wrote to memory of 2840	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	37
PID 2336 wrote to memory of 2840	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	37
PID 2336 wrote to memory of 2840	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	37
PID 2336 wrote to memory of 3016	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	40
PID 2336 wrote to memory of 3016	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	40
PID 2336 wrote to memory of 3016	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	40
PID 2336 wrote to memory of 3016	2336	JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe	40
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42
PID 3012 wrote to memory of 2688	3012	gvieqpiu.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmciwkvd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gvieqpiu.exe" C:\Windows\SysWOW64\fmciwkvd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmciwkvd binPath= "C:\Windows\SysWOW64\fmciwkvd\gvieqpiu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmciwkvd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmciwkvd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- 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:3016

C:\Windows\SysWOW64\fmciwkvd\gvieqpiu.exe
C:\Windows\SysWOW64\fmciwkvd\gvieqpiu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ff3556fcc81946e1a83ab271568bbd36.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- 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:2688

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\gvieqpiu.exe

Filesize
11.3MB

MD5
3c3b64a56d6f5f8215196575f2265aa1

SHA1
3dec33150824eafc476dc99e2abfbace7ec7eb0d

SHA256
ae4d6a097805f1d880c854d8b524b603219e36c5494231bebf1704587413b8b8

SHA512
031dee7d9001cb16e432d351b20e9017c0f01bfa8cf427b765403cf5e4d83dbb47ba59dc9b38c1e33f72f683497efdf7117674000ecd58a607785aae712f00cd

Download Submit
memory/2336-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2336-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2336-4-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2336-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2336-9-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2688-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2688-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2688-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2688-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2688-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3012-15-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads