tofsee | f3563edb147f446d1ce0b58c6254619b17808ff2506c3f2ad32e11ed7910dacd

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 19:16

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General

Target

JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe
Size

12.1MB
MD5

35aa868b9edc2ce3a80f966bf60815a4
SHA1

f0d8809ec1d4fcb47277fefc601028b3aa22044e
SHA256

f3563edb147f446d1ce0b58c6254619b17808ff2506c3f2ad32e11ed7910dacd
SHA512

68ff649ff5c186e19e163a44b3f65e52d3e961b2d2a120103d37734355a03c5ab7c25f220dcb11e74d5ec2a6d6fb429ff273e46f3b441fc5ec3f62108165842d
SSDEEP

49152:LN8888888888888888888888888888888888888888888888888888888888888f:

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\zvsxelys = "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
2996	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\zvsxelys\ImagePath = "C:\\Windows\\SysWOW64\\zvsxelys\\tuscfydo.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
488	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	tuscfydo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 488	2716	tuscfydo.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2700	sc.exe
2736	sc.exe
2900	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	netsh.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	tuscfydo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 2528	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	30
PID 3060 wrote to memory of 2528	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	30
PID 3060 wrote to memory of 2528	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	30
PID 3060 wrote to memory of 2528	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	30
PID 3060 wrote to memory of 812	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	32
PID 3060 wrote to memory of 812	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	32
PID 3060 wrote to memory of 812	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	32
PID 3060 wrote to memory of 812	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	32
PID 3060 wrote to memory of 2700	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	34
PID 3060 wrote to memory of 2700	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	34
PID 3060 wrote to memory of 2700	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	34
PID 3060 wrote to memory of 2700	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	34
PID 3060 wrote to memory of 2736	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	36
PID 3060 wrote to memory of 2736	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	36
PID 3060 wrote to memory of 2736	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	36
PID 3060 wrote to memory of 2736	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	36
PID 3060 wrote to memory of 2900	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	38
PID 3060 wrote to memory of 2900	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	38
PID 3060 wrote to memory of 2900	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	38
PID 3060 wrote to memory of 2900	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	38
PID 3060 wrote to memory of 2996	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	41
PID 3060 wrote to memory of 2996	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	41
PID 3060 wrote to memory of 2996	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	41
PID 3060 wrote to memory of 2996	3060	JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe	41
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43
PID 2716 wrote to memory of 488	2716	tuscfydo.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zvsxelys\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tuscfydo.exe" C:\Windows\SysWOW64\zvsxelys\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zvsxelys binPath= "C:\Windows\SysWOW64\zvsxelys\tuscfydo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zvsxelys "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zvsxelys
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2900
- 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:2996

C:\Windows\SysWOW64\zvsxelys\tuscfydo.exe
C:\Windows\SysWOW64\zvsxelys\tuscfydo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_35aa868b9edc2ce3a80f966bf60815a4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- 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:488

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\tuscfydo.exe

Filesize
14.4MB

MD5
984eab0451c614ac5a942009b9792485

SHA1
453ba735a2491d4d1973ecfa984d65bdabafffce

SHA256
8647231f1270d6fe4b8e497d9c239365be9b0546518b1e69595e76d465956f67

SHA512
a3732cea242e22b139dee5b316e3b4bde0d6070ce2a305533f70bde11544975f4fbc2906deb0ad6633954f7922a1a4dc47cfc8c7f4829941cbff8b87a76d9eb0

Download Submit
memory/488-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/488-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/488-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/488-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/488-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-16-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/3060-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/3060-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3060-8-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/3060-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/3060-6-0x0000000000400000-0x0000000002F05000-memory.dmp

Filesize
43.0MB

Download
memory/3060-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads