tofsee | 2beb5b451168718338d33ee3110dc770a0a3886f9fc72c636411a117c6fbd196

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 05:14

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General

Target

JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe
Size

14.7MB
MD5

8d496d4cd90fc4f686e2fe25a2a12e29
SHA1

af7136255b04e8062ae6d91315d25db19b817339
SHA256

2beb5b451168718338d33ee3110dc770a0a3886f9fc72c636411a117c6fbd196
SHA512

80b3981ac60e97c01835259dbcc79a20b3559baabeb134c3b5e32bd5f6f4eb6659473886fb30f0358e3d32def0e3ac4aaa7ba8a5a94733c53be3f2b6e3625523
SSDEEP

1536:TVZK1I9rn2BHELrWh9iuDdJm7CyY8rhGDNDxTWNdUhUFIq:XK1Mn2BHsrt4mYnrMdUh

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.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\msslqesg = "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
2556	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\msslqesg\ImagePath = "C:\\Windows\\SysWOW64\\msslqesg\\dyfcbyuv.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2524	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2112	dyfcbyuv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 2524	2112	dyfcbyuv.exe	39

Launches sc.exe 3 IoCs

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

pid	Process
2644	sc.exe
2628	sc.exe
2616	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	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.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	svchost.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	dyfcbyuv.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2388	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	28
PID 2272 wrote to memory of 2388	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	28
PID 2272 wrote to memory of 2388	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	28
PID 2272 wrote to memory of 2388	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	28
PID 2272 wrote to memory of 2228	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	30
PID 2272 wrote to memory of 2228	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	30
PID 2272 wrote to memory of 2228	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	30
PID 2272 wrote to memory of 2228	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	30
PID 2272 wrote to memory of 2644	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	32
PID 2272 wrote to memory of 2644	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	32
PID 2272 wrote to memory of 2644	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	32
PID 2272 wrote to memory of 2644	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	32
PID 2272 wrote to memory of 2628	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	34
PID 2272 wrote to memory of 2628	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	34
PID 2272 wrote to memory of 2628	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	34
PID 2272 wrote to memory of 2628	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	34
PID 2272 wrote to memory of 2616	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	36
PID 2272 wrote to memory of 2616	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	36
PID 2272 wrote to memory of 2616	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	36
PID 2272 wrote to memory of 2616	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	36
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2112 wrote to memory of 2524	2112	dyfcbyuv.exe	39
PID 2272 wrote to memory of 2556	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	40
PID 2272 wrote to memory of 2556	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	40
PID 2272 wrote to memory of 2556	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	40
PID 2272 wrote to memory of 2556	2272	JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe	40

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\msslqesg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dyfcbyuv.exe" C:\Windows\SysWOW64\msslqesg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create msslqesg binPath= "C:\Windows\SysWOW64\msslqesg\dyfcbyuv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description msslqesg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start msslqesg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2616
- 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:2556

C:\Windows\SysWOW64\msslqesg\dyfcbyuv.exe
C:\Windows\SysWOW64\msslqesg\dyfcbyuv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d496d4cd90fc4f686e2fe25a2a12e29.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- 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:2524

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\dyfcbyuv.exe

Filesize
13.9MB

MD5
358fff4f3ba9e5f7224e4a0ab33359d0

SHA1
433fd485f0bad6bdf6345052d6ba3d28377dc5c7

SHA256
f52abc64d5e9be7a7b528447e253e3f08a73f4d59dcb8942f5f5494b63f624e1

SHA512
7b43a531176715f3b9f1334e17ffe0383ccc6071f321ffd9da973cc96aba204c401d6cf91578230969feeba9722f1d46b63f068219fc93f54827b446c7b38b55

Download Submit
memory/2112-12-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2272-0-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/2272-1-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2272-2-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/2272-13-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2524-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2524-7-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2524-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2524-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2524-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads