tofsee | 73a8b9c09314a9b07e418584d3f1702ca82a96054227a68abf00cd0488b15d44

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 21:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe
Size

350KB
MD5

fd449b229977fbbdaf1458a6753ca2f5
SHA1

b854dec813042816a243aa28e0bbabbe5bb84748
SHA256

38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13
SHA512

6192ce8e0becb960e082f2b5c1be1e01e8af718b6dbf579c12d5110dd1965f1554143efecfa733b80e43d91fd46f7601113a25c31030b21cfca54aad7f378e7b
SSDEEP

6144:UZF8S00N4dKCSi01IthnHYKKTsVB+6qlYUjUTjENs7Da7zRr:Uv8Sxi1jnHYhTsVB+TVo8W6zt

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

patmushta.info

ovicrush.cn

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\qwdttnzh = "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
2724	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\qwdttnzh\ImagePath = "C:\\Windows\\SysWOW64\\qwdttnzh\\mwjrbvza.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2280	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2852	mwjrbvza.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 2280	2852	mwjrbvza.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2896	sc.exe
2836	sc.exe
2924	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	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	mwjrbvza.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2044	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	30
PID 2308 wrote to memory of 2044	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	30
PID 2308 wrote to memory of 2044	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	30
PID 2308 wrote to memory of 2044	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	30
PID 2308 wrote to memory of 2800	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	32
PID 2308 wrote to memory of 2800	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	32
PID 2308 wrote to memory of 2800	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	32
PID 2308 wrote to memory of 2800	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	32
PID 2308 wrote to memory of 2896	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	34
PID 2308 wrote to memory of 2896	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	34
PID 2308 wrote to memory of 2896	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	34
PID 2308 wrote to memory of 2896	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	34
PID 2308 wrote to memory of 2836	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	36
PID 2308 wrote to memory of 2836	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	36
PID 2308 wrote to memory of 2836	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	36
PID 2308 wrote to memory of 2836	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	36
PID 2308 wrote to memory of 2924	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	38
PID 2308 wrote to memory of 2924	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	38
PID 2308 wrote to memory of 2924	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	38
PID 2308 wrote to memory of 2924	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	38
PID 2308 wrote to memory of 2724	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	41
PID 2308 wrote to memory of 2724	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	41
PID 2308 wrote to memory of 2724	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	41
PID 2308 wrote to memory of 2724	2308	38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe	41
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43
PID 2852 wrote to memory of 2280	2852	mwjrbvza.exe	43

C:\Users\Admin\AppData\Local\Temp\38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe
"C:\Users\Admin\AppData\Local\Temp\38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qwdttnzh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mwjrbvza.exe" C:\Windows\SysWOW64\qwdttnzh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qwdttnzh binPath= "C:\Windows\SysWOW64\qwdttnzh\mwjrbvza.exe /d\"C:\Users\Admin\AppData\Local\Temp\38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qwdttnzh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qwdttnzh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2924
- 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:2724

C:\Windows\SysWOW64\qwdttnzh\mwjrbvza.exe
C:\Windows\SysWOW64\qwdttnzh\mwjrbvza.exe /d"C:\Users\Admin\AppData\Local\Temp\38a30aee82cdd8e5338e168d99fdce7b8e032a89da64e48751b2e45f9d50ad13.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- 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:2280

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\mwjrbvza.exe

Filesize
12.3MB

MD5
a52d900e2792214c22667868ad37c04e

SHA1
7301db84c1794e7d28b0c7946be389ae7c2453fe

SHA256
75540374f0877deaf6fef5527a3490b28623544a37e9c0ca50e3d201a55551b0

SHA512
f3d65d075d4a7d0fd5a173c960a3412683506b2c764c4ac310d7af9ef6e6377fcb1fa036ccf56395b2973c099520f14c89cb4b9df3f570a401d87f38c0581a5a

Download Submit
memory/2280-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2280-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2280-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2280-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2280-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2308-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2308-7-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download
memory/2308-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2308-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2308-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2852-15-0x0000000000400000-0x00000000004DC000-memory.dmp

Filesize
880KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads