tofsee | b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 07:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe
Size

10.2MB
MD5

6a0022b6a2cd33ab4b1101994ecc83b0
SHA1

bdf20c798bbaf6e8c8fa7da8a9485046a03b02fb
SHA256

b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232
SHA512

dbf1341b52c6970151073494c1c398b9e1bed803a10f7f907a4fe079c5632569902fcc3729c85d8760b404ab92be302b57ac963c3658158d1dcba50fc4fd82bc
SSDEEP

24576:nW6y/MK+Iw9zXIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII:W7X

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

patmushta.info

parubey.info

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\pnewutkh = "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
2088	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\pnewutkh\ImagePath = "C:\\Windows\\SysWOW64\\pnewutkh\\bzxmernq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	bzxmernq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2800	2748	bzxmernq.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2804	sc.exe
2808	sc.exe
1504	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzxmernq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2776	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	29
PID 2524 wrote to memory of 2776	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	29
PID 2524 wrote to memory of 2776	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	29
PID 2524 wrote to memory of 2776	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	29
PID 2524 wrote to memory of 2368	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	31
PID 2524 wrote to memory of 2368	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	31
PID 2524 wrote to memory of 2368	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	31
PID 2524 wrote to memory of 2368	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	31
PID 2524 wrote to memory of 2804	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	33
PID 2524 wrote to memory of 2804	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	33
PID 2524 wrote to memory of 2804	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	33
PID 2524 wrote to memory of 2804	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	33
PID 2524 wrote to memory of 2808	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	35
PID 2524 wrote to memory of 2808	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	35
PID 2524 wrote to memory of 2808	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	35
PID 2524 wrote to memory of 2808	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	35
PID 2524 wrote to memory of 1504	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	37
PID 2524 wrote to memory of 1504	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	37
PID 2524 wrote to memory of 1504	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	37
PID 2524 wrote to memory of 1504	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	37
PID 2524 wrote to memory of 2088	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	40
PID 2524 wrote to memory of 2088	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	40
PID 2524 wrote to memory of 2088	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	40
PID 2524 wrote to memory of 2088	2524	b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe	40
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42
PID 2748 wrote to memory of 2800	2748	bzxmernq.exe	42

C:\Users\Admin\AppData\Local\Temp\b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe
"C:\Users\Admin\AppData\Local\Temp\b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pnewutkh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzxmernq.exe" C:\Windows\SysWOW64\pnewutkh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pnewutkh binPath= "C:\Windows\SysWOW64\pnewutkh\bzxmernq.exe /d\"C:\Users\Admin\AppData\Local\Temp\b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pnewutkh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pnewutkh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1504
- 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:2088

C:\Windows\SysWOW64\pnewutkh\bzxmernq.exe
C:\Windows\SysWOW64\pnewutkh\bzxmernq.exe /d"C:\Users\Admin\AppData\Local\Temp\b0fb789b12fe519394c6e06244144714dc69e11aedef07afae8613825a334232.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- 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:2800

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\bzxmernq.exe

Filesize
13.0MB

MD5
5fc0bdb640eeb2d3744a3f8b5fd10195

SHA1
08733d077a5c0cd7b036f355cdbc3250261606e3

SHA256
e67b5822a9572eca435e578d731f25c7ca629f266de87791201dae8afaed3e98

SHA512
c1e1d7563a03ec5ecab3693db1a27b50c801ef3ea2a8ebb9edb7b12417a549a13033bda8100f356d4fe0d2f6622fb9b2c16c624e387f8d8e33c2631d9231cbbf

Download Submit
memory/2524-7-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2524-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/2524-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2524-8-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2524-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2748-16-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2800-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads