tofsee | 9bf45c2ab9d677b2db24bd0c6d53fe037aec876261903f64e2ed10424bd2c9e2

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 09:36

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General

Target

JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe
Size

14.5MB
MD5

1c095dacf9f4235ea32633b2c32812f8
SHA1

45aca75338e06d355829f0db5a14860892c4f5d6
SHA256

9bf45c2ab9d677b2db24bd0c6d53fe037aec876261903f64e2ed10424bd2c9e2
SHA512

3ac730faff36b4d2d7778f9c2409df4e15f5b4124bb89d20fc70066d816bb5f343535c101a84779081c43eff09ea240ab0bc6479f9acc27a57314fb6cddd88fc
SSDEEP

196608:gOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO/:

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\lesrvoac = "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
1808	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\lesrvoac\ImagePath = "C:\\Windows\\SysWOW64\\lesrvoac\\yaujfbxo.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3008	yaujfbxo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3008 set thread context of 2748	3008	yaujfbxo.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2948	sc.exe
2928	sc.exe
2452	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	sc.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	yaujfbxo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 1092	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	30
PID 1340 wrote to memory of 1092	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	30
PID 1340 wrote to memory of 1092	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	30
PID 1340 wrote to memory of 1092	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	30
PID 1340 wrote to memory of 2848	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	32
PID 1340 wrote to memory of 2848	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	32
PID 1340 wrote to memory of 2848	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	32
PID 1340 wrote to memory of 2848	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	32
PID 1340 wrote to memory of 2948	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	34
PID 1340 wrote to memory of 2948	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	34
PID 1340 wrote to memory of 2948	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	34
PID 1340 wrote to memory of 2948	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	34
PID 1340 wrote to memory of 2928	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	36
PID 1340 wrote to memory of 2928	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	36
PID 1340 wrote to memory of 2928	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	36
PID 1340 wrote to memory of 2928	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	36
PID 1340 wrote to memory of 2452	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	38
PID 1340 wrote to memory of 2452	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	38
PID 1340 wrote to memory of 2452	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	38
PID 1340 wrote to memory of 2452	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	38
PID 1340 wrote to memory of 1808	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	41
PID 1340 wrote to memory of 1808	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	41
PID 1340 wrote to memory of 1808	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	41
PID 1340 wrote to memory of 1808	1340	JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe	41
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43
PID 3008 wrote to memory of 2748	3008	yaujfbxo.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lesrvoac\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yaujfbxo.exe" C:\Windows\SysWOW64\lesrvoac\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lesrvoac binPath= "C:\Windows\SysWOW64\lesrvoac\yaujfbxo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lesrvoac "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lesrvoac
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- 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:1808

C:\Windows\SysWOW64\lesrvoac\yaujfbxo.exe
C:\Windows\SysWOW64\lesrvoac\yaujfbxo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1c095dacf9f4235ea32633b2c32812f8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008
- 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:2748

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\yaujfbxo.exe

Filesize
10.7MB

MD5
c9687eb5c174cb819be203f8fcb1e757

SHA1
166cde92f29aee5038090cdd6267f0a213921c31

SHA256
5855a189bea6fe8504f0cd3cfbc2ec29bfcc71c3f8051a112419468807e43b72

SHA512
9d918389c557afee27f0e86414a8259785fb1459dafd76f112777d8053a4e1008e332861ec6c94b1001db8fd89acd2da8dc0cd3ca0c71157b8029cfb1a6d0bfe

Download Submit
memory/1340-8-0x0000000000400000-0x0000000002F11000-memory.dmp

Filesize
43.1MB

Download
memory/1340-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1340-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1340-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1340-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1340-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2748-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2748-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2748-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2748-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3008-16-0x0000000000400000-0x0000000002F11000-memory.dmp

Filesize
43.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads