tofsee | e484c2397a151ed82e2874060f335ffc33c6d442d4358158cfe385f75abc378f

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 11:17

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General

Target

JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe
Size

12.5MB
MD5

c6cdc26d4da1406f0901958066c6a85f
SHA1

5bcf2516112953906f9312b2c3cfb34845c00049
SHA256

e484c2397a151ed82e2874060f335ffc33c6d442d4358158cfe385f75abc378f
SHA512

4e9a67c17d2ec2848be598ab0a3bbe65c8a6c40fd25af41fe1dd649612227e0cb05b2e839b5c1e4062b16f757a1bc95f800ee50b382aea4791efe3c855ff7ead
SSDEEP

49152:ZvUWkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkE:Z

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\xcwdlkfu = "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\xcwdlkfu\ImagePath = "C:\\Windows\\SysWOW64\\xcwdlkfu\\gyqxwnyf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	gyqxwnyf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2740 set thread context of 2708	2740	gyqxwnyf.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2336	sc.exe
2408	sc.exe
2636	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	gyqxwnyf.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	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	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 2296	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	29
PID 2388 wrote to memory of 2296	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	29
PID 2388 wrote to memory of 2296	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	29
PID 2388 wrote to memory of 2296	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	29
PID 2388 wrote to memory of 2912	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	31
PID 2388 wrote to memory of 2912	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	31
PID 2388 wrote to memory of 2912	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	31
PID 2388 wrote to memory of 2912	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	31
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	33
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	33
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	33
PID 2388 wrote to memory of 2336	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	33
PID 2388 wrote to memory of 2408	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	35
PID 2388 wrote to memory of 2408	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	35
PID 2388 wrote to memory of 2408	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	35
PID 2388 wrote to memory of 2408	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	35
PID 2388 wrote to memory of 2636	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	37
PID 2388 wrote to memory of 2636	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	37
PID 2388 wrote to memory of 2636	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	37
PID 2388 wrote to memory of 2636	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	37
PID 2388 wrote to memory of 2904	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	40
PID 2388 wrote to memory of 2904	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	40
PID 2388 wrote to memory of 2904	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	40
PID 2388 wrote to memory of 2904	2388	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	40
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42
PID 2740 wrote to memory of 2708	2740	gyqxwnyf.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xcwdlkfu\
  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\gyqxwnyf.exe" C:\Windows\SysWOW64\xcwdlkfu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xcwdlkfu binPath= "C:\Windows\SysWOW64\xcwdlkfu\gyqxwnyf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xcwdlkfu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xcwdlkfu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2636
- 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\xcwdlkfu\gyqxwnyf.exe
C:\Windows\SysWOW64\xcwdlkfu\gyqxwnyf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- 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:2708

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\gyqxwnyf.exe

Filesize
12.5MB

MD5
c6cdc26d4da1406f0901958066c6a85f

SHA1
5bcf2516112953906f9312b2c3cfb34845c00049

SHA256
e484c2397a151ed82e2874060f335ffc33c6d442d4358158cfe385f75abc378f

SHA512
4e9a67c17d2ec2848be598ab0a3bbe65c8a6c40fd25af41fe1dd649612227e0cb05b2e839b5c1e4062b16f757a1bc95f800ee50b382aea4791efe3c855ff7ead

Download Submit
memory/2388-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2388-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-10-0x0000000002F40000-0x0000000003040000-memory.dmp

Filesize
1024KB

Download
memory/2388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-1-0x0000000002F40000-0x0000000003040000-memory.dmp

Filesize
1024KB

Download
memory/2708-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2708-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2708-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2708-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2740-16-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads