tofsee | 101326e6957a09dda1fd975d860f1ea11f99ac803d2dd75b30e469c52c9de4d7

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 11:31

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General

Target

JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe
Size

14.8MB
MD5

604d7dab179c911f9f9360064e3bfd90
SHA1

b7e135fef6b808b30175fc94d9f3b017d5f7a6f3
SHA256

101326e6957a09dda1fd975d860f1ea11f99ac803d2dd75b30e469c52c9de4d7
SHA512

d2ab2f84db4781005ca4018571a74b1353ec16c6baf9c15152d1277be720d20ea714947660bd1cc9cd5e319855f27524e8bcf272aebff0d876e7777b5f8f130a
SSDEEP

49152:WLfRwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww/:WLf

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\eaygjqut = "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
2876	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\eaygjqut\ImagePath = "C:\\Windows\\SysWOW64\\eaygjqut\\zsdtebun.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2912	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2832	zsdtebun.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 2912	2832	zsdtebun.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2580	sc.exe
1548	sc.exe
2052	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	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
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_604d7dab179c911f9f9360064e3bfd90.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zsdtebun.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 3052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	30
PID 372 wrote to memory of 3052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	30
PID 372 wrote to memory of 3052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	30
PID 372 wrote to memory of 3052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	30
PID 372 wrote to memory of 2432	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	32
PID 372 wrote to memory of 2432	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	32
PID 372 wrote to memory of 2432	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	32
PID 372 wrote to memory of 2432	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	32
PID 372 wrote to memory of 2580	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	34
PID 372 wrote to memory of 2580	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	34
PID 372 wrote to memory of 2580	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	34
PID 372 wrote to memory of 2580	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	34
PID 372 wrote to memory of 1548	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	36
PID 372 wrote to memory of 1548	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	36
PID 372 wrote to memory of 1548	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	36
PID 372 wrote to memory of 1548	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	36
PID 372 wrote to memory of 2052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	38
PID 372 wrote to memory of 2052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	38
PID 372 wrote to memory of 2052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	38
PID 372 wrote to memory of 2052	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	38
PID 372 wrote to memory of 2876	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	41
PID 372 wrote to memory of 2876	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	41
PID 372 wrote to memory of 2876	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	41
PID 372 wrote to memory of 2876	372	JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe	41
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43
PID 2832 wrote to memory of 2912	2832	zsdtebun.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eaygjqut\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zsdtebun.exe" C:\Windows\SysWOW64\eaygjqut\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eaygjqut binPath= "C:\Windows\SysWOW64\eaygjqut\zsdtebun.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eaygjqut "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eaygjqut
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2052
- 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:2876

C:\Windows\SysWOW64\eaygjqut\zsdtebun.exe
C:\Windows\SysWOW64\eaygjqut\zsdtebun.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_604d7dab179c911f9f9360064e3bfd90.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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:2912

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\zsdtebun.exe

Filesize
14.0MB

MD5
77e646c7795b3a585def417ffc06182e

SHA1
bb4e700bcff51aa8febc9ee6279e06390bb7bc7c

SHA256
2b5aafe855433a1b89967bed59dcdd8424dc9ba3bd5d39e36b6969d2f252a0cb

SHA512
131ebd2482c0bd1f9733eb21af8a2a0daebb2e6a5831d413010f54cb85ce49971678787cf9e44978d2c3b9bc07934289079a4d98f3b9d92d4bc4c4a8a8452a1f

Download Submit
memory/372-1-0x00000000031F0000-0x00000000032F0000-memory.dmp

Filesize
1024KB

Download
memory/372-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/372-4-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/372-8-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/372-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2832-16-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/2912-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2912-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads