tofsee | 4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 20:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe
Size

13.3MB
MD5

e88821744c45591e4dce49cec3a5f86a
SHA1

6c7f9cd938e3a60563f5ef4aafb889e4fc29fff5
SHA256

4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a
SHA512

dbd92c778e4507e80a77e7a285230e3e4d99961df963ac7aa9a38e42deccfe636b7b774b73d8888999518a9edf14de74ab3af343cf6866bcf3131b3e2e09748e
SSDEEP

24576:RCoZopQ3TmLgqkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk/:Msjms

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\nluqrlqa = "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
2784	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\nluqrlqa\ImagePath = "C:\\Windows\\SysWOW64\\nluqrlqa\\cbupixrb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2656	cbupixrb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2656 set thread context of 2648	2656	cbupixrb.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
876	sc.exe
2748	sc.exe
2740	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	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	cbupixrb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 1704	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	31
PID 2120 wrote to memory of 1704	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	31
PID 2120 wrote to memory of 1704	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	31
PID 2120 wrote to memory of 1704	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	31
PID 2120 wrote to memory of 1172	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	33
PID 2120 wrote to memory of 1172	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	33
PID 2120 wrote to memory of 1172	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	33
PID 2120 wrote to memory of 1172	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	33
PID 2120 wrote to memory of 876	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	35
PID 2120 wrote to memory of 876	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	35
PID 2120 wrote to memory of 876	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	35
PID 2120 wrote to memory of 876	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	35
PID 2120 wrote to memory of 2748	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	37
PID 2120 wrote to memory of 2748	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	37
PID 2120 wrote to memory of 2748	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	37
PID 2120 wrote to memory of 2748	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	37
PID 2120 wrote to memory of 2740	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	39
PID 2120 wrote to memory of 2740	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	39
PID 2120 wrote to memory of 2740	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	39
PID 2120 wrote to memory of 2740	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	39
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2656 wrote to memory of 2648	2656	cbupixrb.exe	42
PID 2120 wrote to memory of 2784	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	43
PID 2120 wrote to memory of 2784	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	43
PID 2120 wrote to memory of 2784	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	43
PID 2120 wrote to memory of 2784	2120	4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe	43

C:\Users\Admin\AppData\Local\Temp\4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe
"C:\Users\Admin\AppData\Local\Temp\4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nluqrlqa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cbupixrb.exe" C:\Windows\SysWOW64\nluqrlqa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nluqrlqa binPath= "C:\Windows\SysWOW64\nluqrlqa\cbupixrb.exe /d\"C:\Users\Admin\AppData\Local\Temp\4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nluqrlqa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nluqrlqa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2784

C:\Windows\SysWOW64\nluqrlqa\cbupixrb.exe
C:\Windows\SysWOW64\nluqrlqa\cbupixrb.exe /d"C:\Users\Admin\AppData\Local\Temp\4e3668f0f386e6854c53e3a7ab396c19eea40b7eb7d36cbdce35cafd1dc15c7a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2656
- 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:2648

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\cbupixrb.exe

Filesize
11.4MB

MD5
1e993b8cca33b7a71bf6f71b1f8241f6

SHA1
45c20fdf0e0ee9df88206ba93cd1d90f661534f6

SHA256
3ac6cffa91aa6d8423e9cf04833d951feb6f929c3e897e19c2918f6e4849b6b0

SHA512
fc33d0acdaa426dd7c26aba6f9d90cb39e05d70fe16c17aeb6e6421696266e63c53cdc01ce4507b493e3a5c0082b68d30ab23b6d2ee6c1b4fc3d3bc9b31800a2

Download Submit
memory/2120-14-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/2120-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2120-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-15-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2120-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2648-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2656-13-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads