tofsee | 2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 11:55

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General

Target

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
Size

10.1MB
MD5

0e5a9c35b3d357763c7a52db54daf211
SHA1

65bd31bc2fc54a359e9eb1a7abb03bc71d2e7c2b
SHA256

2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889
SHA512

3ec7ba172ed8fe2e9edd0c024b92ff00a9deb619ea16cff28ff7a49eacbd0b9139c03103da2d163d1305221b5016f181dd871cebdce75bfd9fed8586486e1520
SSDEEP

49152:pkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH/:q

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\hcxfxtoa = "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
2832	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\hcxfxtoa\ImagePath = "C:\\Windows\\SysWOW64\\hcxfxtoa\\wtejhrol.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2304	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	wtejhrol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 2304	2916	wtejhrol.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2872	sc.exe
2300	sc.exe
2184	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wtejhrol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 1728	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	30
PID 2412 wrote to memory of 1728	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	30
PID 2412 wrote to memory of 1728	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	30
PID 2412 wrote to memory of 1728	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	30
PID 2412 wrote to memory of 2416	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	32
PID 2412 wrote to memory of 2416	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	32
PID 2412 wrote to memory of 2416	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	32
PID 2412 wrote to memory of 2416	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	32
PID 2412 wrote to memory of 2300	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	34
PID 2412 wrote to memory of 2300	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	34
PID 2412 wrote to memory of 2300	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	34
PID 2412 wrote to memory of 2300	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	34
PID 2412 wrote to memory of 2184	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	36
PID 2412 wrote to memory of 2184	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	36
PID 2412 wrote to memory of 2184	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	36
PID 2412 wrote to memory of 2184	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	36
PID 2412 wrote to memory of 2872	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	38
PID 2412 wrote to memory of 2872	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	38
PID 2412 wrote to memory of 2872	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	38
PID 2412 wrote to memory of 2872	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	38
PID 2412 wrote to memory of 2832	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	41
PID 2412 wrote to memory of 2832	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	41
PID 2412 wrote to memory of 2832	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	41
PID 2412 wrote to memory of 2832	2412	2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe	41
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43
PID 2916 wrote to memory of 2304	2916	wtejhrol.exe	43

C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe
"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hcxfxtoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wtejhrol.exe" C:\Windows\SysWOW64\hcxfxtoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hcxfxtoa binPath= "C:\Windows\SysWOW64\hcxfxtoa\wtejhrol.exe /d\"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hcxfxtoa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hcxfxtoa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2832

C:\Windows\SysWOW64\hcxfxtoa\wtejhrol.exe
C:\Windows\SysWOW64\hcxfxtoa\wtejhrol.exe /d"C:\Users\Admin\AppData\Local\Temp\2593f55632b67e0b175337f44719e487b6f79c8ef46a06f10547ae71e6c63889.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2304

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\wtejhrol.exe

Filesize
10.5MB

MD5
b23a502c78dc2629efc6131e3e68d115

SHA1
1d5b445ee44d545f60e300aa6b4a746a062d0886

SHA256
68be74fb35eed87a6b81f5ad2e858ca254894267c2a709a0cddda3616a663918

SHA512
eab7cec520e5e6d8647f261b847e1e83509ca87809988af08face37ebbe3b4e37142571cd79acf45e4618e414764d238a2c2418798810d1a205145a40e28123c

Download Submit
memory/2304-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2304-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2412-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2412-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2412-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2412-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2412-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/2916-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads