tofsee | 604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 21:25

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General

Target

JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe
Size

159KB
MD5

1ab812dbbd226dae57323b8fe47bbdc7
SHA1

11b1a29723a044416dfde417256868bad66add0c
SHA256

604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c
SHA512

cd3166963f7d6780a87faef819946b827ed844656e029886666fa602e22f975f7196d6ad1f22f2bc80c543ef3efb8ecfcf8be77686edf28a0e2445fb7ee1ff75
SSDEEP

3072:s47FGXpybBYWhlcijEKINB1eazv3v3XVU/mtAuT:sHpybBYWh+iRa1Z3XmsA

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\wxvnxgen = "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
2540	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\wxvnxgen\ImagePath = "C:\\Windows\\SysWOW64\\wxvnxgen\\mewdctel.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	mewdctel.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2780 set thread context of 2816	2780	mewdctel.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2408	sc.exe
1368	sc.exe
2644	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_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.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	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	mewdctel.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 3020	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	31
PID 1708 wrote to memory of 3020	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	31
PID 1708 wrote to memory of 3020	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	31
PID 1708 wrote to memory of 3020	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	31
PID 1708 wrote to memory of 1924	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	33
PID 1708 wrote to memory of 1924	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	33
PID 1708 wrote to memory of 1924	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	33
PID 1708 wrote to memory of 1924	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	33
PID 1708 wrote to memory of 2408	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	35
PID 1708 wrote to memory of 2408	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	35
PID 1708 wrote to memory of 2408	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	35
PID 1708 wrote to memory of 2408	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	35
PID 1708 wrote to memory of 1368	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	37
PID 1708 wrote to memory of 1368	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	37
PID 1708 wrote to memory of 1368	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	37
PID 1708 wrote to memory of 1368	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	37
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	39
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	39
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	39
PID 1708 wrote to memory of 2644	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	39
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 2780 wrote to memory of 2816	2780	mewdctel.exe	42
PID 1708 wrote to memory of 2540	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	43
PID 1708 wrote to memory of 2540	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	43
PID 1708 wrote to memory of 2540	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	43
PID 1708 wrote to memory of 2540	1708	JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxvnxgen\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mewdctel.exe" C:\Windows\SysWOW64\wxvnxgen\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxvnxgen binPath= "C:\Windows\SysWOW64\wxvnxgen\mewdctel.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxvnxgen "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxvnxgen
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2644
- 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:2540

C:\Windows\SysWOW64\wxvnxgen\mewdctel.exe
C:\Windows\SysWOW64\wxvnxgen\mewdctel.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604840fc53ccc55247e62151d8b92f17e28c7fbfc17db5750d5b0b58cb41b49c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2816

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\mewdctel.exe

Filesize
12.2MB

MD5
e047703b2eb15633426ad1c2ba615e18

SHA1
f6ea63cce821ba7a262d8ee37473058214b8976d

SHA256
2c79fd31efda82ca7c4a7363e512cfbe7db9e69f4f738b7eca166422623eacf9

SHA512
8fdf5d58a6db227a33a9a8c8a8b412e596f77d885459c6021b16892600e723f32044d4e402450391e343df2440e8e8d0ba3e0c648a5acefed33440c577406f22

Download Submit
memory/1708-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1708-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1708-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1708-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1708-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1708-14-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1708-13-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2780-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2816-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-6-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads