tofsee | d6d6581e266a3f1d371dd4ddff0240e50b9aeee252373b15caad66eecacb873b

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 22:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe
Size

337KB
MD5

64765141b86d4bce1470e9b8b9de492d
SHA1

8497035ee193ff0351f8ca6a5b924bf6db8f706d
SHA256

e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e
SHA512

f8404a22092a659585eafa2f5504e630abe0302713e3ad13848f4809d92c39f284d85eb4db6c9cf9dc660ebe22b397e97b116cc196d698ab2ccdf1836b48507a
SSDEEP

6144:xiu5EIbeIz5anwf7Beqh4QUslWmsos3xub+gQXcIjzqw:xuozSwf7Q2/UslWmkxK+gQXZl

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\jirrluz = "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
2808	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\jirrluz\ImagePath = "C:\\Windows\\SysWOW64\\jirrluz\\inxnbg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	inxnbg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 2628	2760	inxnbg.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1592	sc.exe
2208	sc.exe
2060	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	inxnbg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.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	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2552	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	30
PID 2376 wrote to memory of 2552	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	30
PID 2376 wrote to memory of 2552	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	30
PID 2376 wrote to memory of 2552	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	30
PID 2376 wrote to memory of 2576	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	32
PID 2376 wrote to memory of 2576	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	32
PID 2376 wrote to memory of 2576	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	32
PID 2376 wrote to memory of 2576	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	32
PID 2376 wrote to memory of 1592	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	34
PID 2376 wrote to memory of 1592	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	34
PID 2376 wrote to memory of 1592	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	34
PID 2376 wrote to memory of 1592	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	34
PID 2376 wrote to memory of 2208	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	36
PID 2376 wrote to memory of 2208	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	36
PID 2376 wrote to memory of 2208	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	36
PID 2376 wrote to memory of 2208	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	36
PID 2376 wrote to memory of 2060	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	38
PID 2376 wrote to memory of 2060	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	38
PID 2376 wrote to memory of 2060	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	38
PID 2376 wrote to memory of 2060	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	38
PID 2376 wrote to memory of 2808	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	41
PID 2376 wrote to memory of 2808	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	41
PID 2376 wrote to memory of 2808	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	41
PID 2376 wrote to memory of 2808	2376	e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe	41
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43
PID 2760 wrote to memory of 2628	2760	inxnbg.exe	43

C:\Users\Admin\AppData\Local\Temp\e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe
"C:\Users\Admin\AppData\Local\Temp\e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jirrluz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\inxnbg.exe" C:\Windows\SysWOW64\jirrluz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jirrluz binPath= "C:\Windows\SysWOW64\jirrluz\inxnbg.exe /d\"C:\Users\Admin\AppData\Local\Temp\e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jirrluz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jirrluz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2060
- 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:2808

C:\Windows\SysWOW64\jirrluz\inxnbg.exe
C:\Windows\SysWOW64\jirrluz\inxnbg.exe /d"C:\Users\Admin\AppData\Local\Temp\e1e65f9c773cc00d08dda0f9971fbb971c033d32382bdd1a59194adcde2c3e7e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2628

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\inxnbg.exe

Filesize
10.7MB

MD5
6528f80b298a74e80d3c22cc1dbad456

SHA1
f851d5452cb290dd94b04e252f550f616696ed56

SHA256
42fdbcbf0b2f4dd2087f5a18517146fb84f7b936d4fb4128dea26fa4aa475ba4

SHA512
89f51517e62ea861c61718339a1953a01cfd13555c63a5f3974b64e9c61100f4f911da296316c0fb43ea3283a7ca8fc95b5ab0d5e15902ebb264d24e0a60feeb

Download Submit
memory/2376-1-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

Filesize
1024KB

Download
memory/2376-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-4-0x0000000000400000-0x0000000002B4E000-memory.dmp

Filesize
39.3MB

Download
memory/2376-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-8-0x0000000000400000-0x0000000002B4E000-memory.dmp

Filesize
39.3MB

Download
memory/2628-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2628-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2628-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2628-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2760-15-0x0000000000400000-0x0000000002B4E000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads