tofsee | 9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 05:37

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General

Target

JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe
Size

10.9MB
MD5

8ef57b0ee52ad8d343c5febce2c3caf3
SHA1

944e9be261db19754da9c1a097c7ac05f42fb7e9
SHA256

9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0
SHA512

630fa92ce62e6c9c0e8a6bdda757719c08d9344df5dfbe9867fa775e2d1f71e480e4fd4f6e9d386700f8caefda4577ab230295c209615df493d86c4411dbeb65
SSDEEP

24576:3AWcGx111111111111111111111111111111111111111111111111111111111X:3HH

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\btmyhowy = "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
2908	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\btmyhowy\ImagePath = "C:\\Windows\\SysWOW64\\btmyhowy\\ilemkmue.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2836	ilemkmue.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2836 set thread context of 2848	2836	ilemkmue.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2376	sc.exe
2968	sc.exe
1032	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	ilemkmue.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.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 2324 wrote to memory of 844	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	30
PID 2324 wrote to memory of 844	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	30
PID 2324 wrote to memory of 844	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	30
PID 2324 wrote to memory of 844	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	30
PID 2324 wrote to memory of 2356	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	32
PID 2324 wrote to memory of 2356	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	32
PID 2324 wrote to memory of 2356	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	32
PID 2324 wrote to memory of 2356	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	32
PID 2324 wrote to memory of 2376	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	34
PID 2324 wrote to memory of 2376	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	34
PID 2324 wrote to memory of 2376	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	34
PID 2324 wrote to memory of 2376	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	34
PID 2324 wrote to memory of 2968	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	36
PID 2324 wrote to memory of 2968	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	36
PID 2324 wrote to memory of 2968	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	36
PID 2324 wrote to memory of 2968	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	36
PID 2324 wrote to memory of 1032	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	38
PID 2324 wrote to memory of 1032	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	38
PID 2324 wrote to memory of 1032	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	38
PID 2324 wrote to memory of 1032	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	38
PID 2324 wrote to memory of 2908	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	41
PID 2324 wrote to memory of 2908	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	41
PID 2324 wrote to memory of 2908	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	41
PID 2324 wrote to memory of 2908	2324	JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe	41
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44
PID 2836 wrote to memory of 2848	2836	ilemkmue.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\btmyhowy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ilemkmue.exe" C:\Windows\SysWOW64\btmyhowy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create btmyhowy binPath= "C:\Windows\SysWOW64\btmyhowy\ilemkmue.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description btmyhowy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start btmyhowy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1032
- 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:2908

C:\Windows\SysWOW64\btmyhowy\ilemkmue.exe
C:\Windows\SysWOW64\btmyhowy\ilemkmue.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8ef57b0ee52ad8d343c5febce2c3caf3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836
- 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:2848

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\ilemkmue.exe

Filesize
14.7MB

MD5
50daf0b957ab11aa51843312b7de03bc

SHA1
6786c55f2985f97813e935b643003fa0f22c1df4

SHA256
0af5b408ddf57e3aca2c78727cd80f1cbeaa9812c3150c48cc1f163490604644

SHA512
8d381961e5be72046305e83bbe9040bfd5a6ae555c1945686373de9293dee5fbc903630b5ce2d9a43cbc57e7c4a9d2bf22f0c5fb91409c6200bf689d4c96e396

Download Submit
memory/2324-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2324-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2836-16-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2848-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads