tofsee | 9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 22:51

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General

Target

JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe
Size

327KB
MD5

b35f2909e897463c416785bdcde42493
SHA1

bac8e6f9c56d963e7409640b91761090079f2fa3
SHA256

9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56
SHA512

6a0e7b2948e5f97228806392fc7a2456ae7df14494823e2570b4fd4fe90cae137610031a31b51acfac6de8d889c5a114548f447c0aa88b17c1e019e29acbc033
SSDEEP

6144:q5CPb057QUO6Tnp5+5aMIerb1us61S8T8Cvo:D0RQUOqnp5Uaferbs1tTl

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\fwksrbhs = "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\fwksrbhs\ImagePath = "C:\\Windows\\SysWOW64\\fwksrbhs\\gvwcpaut.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	gvwcpaut.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3000 set thread context of 1616	3000	gvwcpaut.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2844	sc.exe
2752	sc.exe
2740	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	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.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	svchost.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	gvwcpaut.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2864	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	29
PID 2304 wrote to memory of 2864	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	29
PID 2304 wrote to memory of 2864	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	29
PID 2304 wrote to memory of 2864	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	29
PID 2304 wrote to memory of 3008	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	31
PID 2304 wrote to memory of 3008	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	31
PID 2304 wrote to memory of 3008	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	31
PID 2304 wrote to memory of 3008	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	31
PID 2304 wrote to memory of 2844	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	33
PID 2304 wrote to memory of 2844	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	33
PID 2304 wrote to memory of 2844	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	33
PID 2304 wrote to memory of 2844	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	33
PID 2304 wrote to memory of 2752	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	35
PID 2304 wrote to memory of 2752	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	35
PID 2304 wrote to memory of 2752	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	35
PID 2304 wrote to memory of 2752	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	35
PID 2304 wrote to memory of 2740	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	37
PID 2304 wrote to memory of 2740	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	37
PID 2304 wrote to memory of 2740	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	37
PID 2304 wrote to memory of 2740	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	37
PID 2304 wrote to memory of 3016	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	40
PID 2304 wrote to memory of 3016	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	40
PID 2304 wrote to memory of 3016	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	40
PID 2304 wrote to memory of 3016	2304	JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe	40
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42
PID 3000 wrote to memory of 1616	3000	gvwcpaut.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fwksrbhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gvwcpaut.exe" C:\Windows\SysWOW64\fwksrbhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fwksrbhs binPath= "C:\Windows\SysWOW64\fwksrbhs\gvwcpaut.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fwksrbhs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fwksrbhs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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\fwksrbhs\gvwcpaut.exe
C:\Windows\SysWOW64\fwksrbhs\gvwcpaut.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9bc9e8366b832675f4dfbbd0282309b9a5574ff3077f09a0c7c7833323c3da56.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3000
- 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:1616

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\gvwcpaut.exe

Filesize
12.5MB

MD5
519bde28ebf7c67d2f182548ff86b81d

SHA1
e9abc86a8334daee8a280aaa13c0dd83b5d161e1

SHA256
2dff99b6cf0b0d3161e0d3f244496c6e1a051a9becdc113c6f4d87ba6cdcab64

SHA512
87447fc9a3aee4bf9342846bb38d7ba9addefb76aa8df4424a8030444ee6cffe514b0a30287ec12a4668d4be4b9b1ab366e8ad7a43b4d2e038dafb80472d85aa

Download Submit
memory/1616-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1616-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1616-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1616-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1616-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-2-0x00000000003E0000-0x00000000003F3000-memory.dmp

Filesize
76KB

Download
memory/2304-8-0x00000000003E0000-0x00000000003F3000-memory.dmp

Filesize
76KB

Download
memory/2304-9-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2304-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-7-0x0000000000400000-0x00000000023A9000-memory.dmp

Filesize
31.7MB

Download
memory/2304-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/3000-18-0x0000000000400000-0x00000000023A9000-memory.dmp

Filesize
31.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads