tofsee | 1fed49beb1c305310c18e449393936b58f59bd9855df4d7c7ca20eb9e7f31a71

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 19:49

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General

Target

JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe
Size

10.6MB
MD5

a8d65709b6c6aafab9e360448ce84fd5
SHA1

983680d1f9a85ab0497513062db3a0220bff7c67
SHA256

1fed49beb1c305310c18e449393936b58f59bd9855df4d7c7ca20eb9e7f31a71
SHA512

54af1429968c82b240c9f70e4d4e08fb61fe41c7064f36c86303e776d71efd6f09f5d6ec418bff84d94a2a8132e25bf2adfa2ec0f2e1a645765ebc1a2ecad5b2
SSDEEP

6144:jeaRFeYiZtnsLs/Xyihb124uKPoifbY/3sGIU5N5:jF7/iZtRXpu3ijwf5T

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\nzregir = "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
2672	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\nzregir\ImagePath = "C:\\Windows\\SysWOW64\\nzregir\\yojvpbfx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2612	yojvpbfx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 2668	2612	yojvpbfx.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2704	sc.exe
2872	sc.exe
1800	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yojvpbfx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2140	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	28
PID 3044 wrote to memory of 2140	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	28
PID 3044 wrote to memory of 2140	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	28
PID 3044 wrote to memory of 2140	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	28
PID 3044 wrote to memory of 2708	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	30
PID 3044 wrote to memory of 2708	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	30
PID 3044 wrote to memory of 2708	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	30
PID 3044 wrote to memory of 2708	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	30
PID 3044 wrote to memory of 2704	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	32
PID 3044 wrote to memory of 2704	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	32
PID 3044 wrote to memory of 2704	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	32
PID 3044 wrote to memory of 2704	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	32
PID 3044 wrote to memory of 2872	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	34
PID 3044 wrote to memory of 2872	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	34
PID 3044 wrote to memory of 2872	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	34
PID 3044 wrote to memory of 2872	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	34
PID 3044 wrote to memory of 1800	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	36
PID 3044 wrote to memory of 1800	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	36
PID 3044 wrote to memory of 1800	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	36
PID 3044 wrote to memory of 1800	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	36
PID 3044 wrote to memory of 2672	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	39
PID 3044 wrote to memory of 2672	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	39
PID 3044 wrote to memory of 2672	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	39
PID 3044 wrote to memory of 2672	3044	JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe	39
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41
PID 2612 wrote to memory of 2668	2612	yojvpbfx.exe	41

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nzregir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yojvpbfx.exe" C:\Windows\SysWOW64\nzregir\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nzregir binPath= "C:\Windows\SysWOW64\nzregir\yojvpbfx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nzregir "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nzregir
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1800
- 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:2672

C:\Windows\SysWOW64\nzregir\yojvpbfx.exe
C:\Windows\SysWOW64\nzregir\yojvpbfx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8d65709b6c6aafab9e360448ce84fd5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- 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:2668

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\yojvpbfx.exe

Filesize
12.3MB

MD5
7e7bf125cff415f82a9876dd63187142

SHA1
0a057e794f426fd699340f8f41f40a1876e39ec6

SHA256
4ca616cc8a2f1cbfa427ec31453bb74d16c10ba8f9ed2e828956ab2552317499

SHA512
c38e44f27cf9792786bacf264f90d9785536efdafa431b65cf2f96c96ff06acecc9c05d8129fb270e9c06563a853e63a15a3e86a0c964282800def1ec921bb02

Download Submit
memory/2612-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2668-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2668-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3044-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3044-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3044-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/3044-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads