tofsee | 94da4b758bbbfc4bf501f5232f16478b8c56a63e77f20090bf91a5c8c3821927

Analysis

max time kernel
145s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 12:18

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General

Target

JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe
Size

11.3MB
MD5

e4102e6bc13f395e41d56630933c5b7f
SHA1

0ed523c9ea7709add9343e7bbe007c67932488d5
SHA256

94da4b758bbbfc4bf501f5232f16478b8c56a63e77f20090bf91a5c8c3821927
SHA512

18df3f62bf992509f54f2a4acf702f513483f4104decb1b565339540932038d53e4796edcfb536bc7338665479e31cb57ca91840a4c79a5f467b288876740951
SSDEEP

49152:kUkssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssX:k

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\wkuqlagt = "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
2872	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\wkuqlagt\ImagePath = "C:\\Windows\\SysWOW64\\wkuqlagt\\yoooduas.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2844	yoooduas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2816	2844	yoooduas.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1012	sc.exe
2512	sc.exe
2276	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.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	yoooduas.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 1620 wrote to memory of 1624	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	30
PID 1620 wrote to memory of 1624	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	30
PID 1620 wrote to memory of 1624	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	30
PID 1620 wrote to memory of 1624	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	30
PID 1620 wrote to memory of 1216	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	32
PID 1620 wrote to memory of 1216	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	32
PID 1620 wrote to memory of 1216	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	32
PID 1620 wrote to memory of 1216	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	32
PID 1620 wrote to memory of 1012	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	34
PID 1620 wrote to memory of 1012	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	34
PID 1620 wrote to memory of 1012	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	34
PID 1620 wrote to memory of 1012	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	34
PID 1620 wrote to memory of 2512	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	36
PID 1620 wrote to memory of 2512	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	36
PID 1620 wrote to memory of 2512	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	36
PID 1620 wrote to memory of 2512	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	36
PID 1620 wrote to memory of 2276	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	38
PID 1620 wrote to memory of 2276	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	38
PID 1620 wrote to memory of 2276	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	38
PID 1620 wrote to memory of 2276	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	38
PID 1620 wrote to memory of 2872	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	41
PID 1620 wrote to memory of 2872	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	41
PID 1620 wrote to memory of 2872	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	41
PID 1620 wrote to memory of 2872	1620	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	41
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43
PID 2844 wrote to memory of 2816	2844	yoooduas.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wkuqlagt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yoooduas.exe" C:\Windows\SysWOW64\wkuqlagt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wkuqlagt binPath= "C:\Windows\SysWOW64\wkuqlagt\yoooduas.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wkuqlagt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wkuqlagt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- 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:2872

C:\Windows\SysWOW64\wkuqlagt\yoooduas.exe
C:\Windows\SysWOW64\wkuqlagt\yoooduas.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2844
- 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:2816

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\yoooduas.exe

Filesize
12.1MB

MD5
3bcf84318dd5be0c89643e3da32fcca5

SHA1
c572e1172d4f5f4e170a6f34cacb73dea0a3e312

SHA256
889a6f91930c3478bdff7f5500ab3aad35f71718aaa2ad526cc8f76410ac3b45

SHA512
cf745a377b44c78f7fc64631cd6ffa3626a637f126a18777bcf3898a41df6014d1a786f8a54438a5cded77aacc7dac6e0acc898cda07b4b971cafea188dbabe6

Download Submit
memory/1620-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1620-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1620-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1620-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1620-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1620-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/2816-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2816-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2844-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads