Analysis Overview
SHA256
85a58aa96dccd94316a34608ba996656a22c8158d5156b6e454d9d69e6ff38c3
Threat Level: Likely malicious
The file PCToaster.exe was found to be: Likely malicious.
Malicious Activity Summary
Possible privilege escalation attempt
Modifies file permissions
Enumerates connected drives
Unsigned PE
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Checks SCSI registry key(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Views/modifies file attributes
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-09 21:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-09 21:07
Reported
2024-03-09 21:08
Platform
win7-20240221-en
Max time kernel
21s
Max time network
23s
Command Line
Signatures
Enumerates system info in registry
| Description | Indicator | Process | Target |
| 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 |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | 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 FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\PCToaster.exe
"C:\Users\Admin\AppData\Local\Temp\PCToaster.exe"
C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\PCToaster.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
"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,0x7fef68f9758,0x7fef68f9768,0x7fef68f9778
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=1108 --field-trial-handle=1272,i,8306310613703521569,13908900285127910706,131072 /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=1536 --field-trial-handle=1272,i,8306310613703521569,13908900285127910706,131072 /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=1564 --field-trial-handle=1272,i,8306310613703521569,13908900285127910706,131072 /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=2100 --field-trial-handle=1272,i,8306310613703521569,13908900285127910706,131072 /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=2108 --field-trial-handle=1272,i,8306310613703521569,13908900285127910706,131072 /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"
Network
Files
memory/2804-0-0x0000000000400000-0x000000000046E000-memory.dmp
memory/1056-9-0x0000000002200000-0x0000000005200000-memory.dmp
memory/1056-11-0x0000000000110000-0x0000000000111000-memory.dmp
\??\pipe\crashpad_3056_UWUAPLTTVGKKJHME
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp
| MD5 | 18e723571b00fb1694a3bad6c78e4054 |
| SHA1 | afcc0ef32d46fe59e0483f9a3c891d3034d12f32 |
| SHA256 | 8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa |
| SHA512 | 43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-09 21:07
Reported
2024-03-09 21:08
Platform
win10v2004-20231215-en
Max time kernel
38s
Max time network
41s
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\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\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 |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\V: | C:\Windows\SYSTEM32\takeown.exe | N/A |
| File opened (read-only) | \??\V: | C:\Windows\SYSTEM32\takeown.exe | N/A |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 | C:\Windows\System32\vds.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\System32\vds.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 | C:\Windows\System32\vds.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName | C:\Windows\System32\vds.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\SYSTEM32\takeown.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Java\jre-1.8\bin\javaw.exe | N/A |
| N/A | N/A | C:\Program Files\Java\jre-1.8\bin\javaw.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\PCToaster.exe
"C:\Users\Admin\AppData\Local\Temp\PCToaster.exe"
C:\Program Files\Java\jre-1.8\bin\javaw.exe
"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Local\Temp\PCToaster.exe"
C:\Windows\system32\icacls.exe
C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
C:\Windows\SYSTEM32\attrib.exe
attrib +h C:\Users\Admin\AppData\Local\Temp\scr.txt
C:\Windows\SYSTEM32\diskpart.exe
diskpart /s C:\Users\Admin\AppData\Local\Temp\scr.txt
C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
C:\Windows\SYSTEM32\takeown.exe
takeown /f V:\Boot /r
C:\Windows\SYSTEM32\takeown.exe
takeown /f V:\Recovery /r
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
Files
memory/4812-0-0x0000000000400000-0x000000000046E000-memory.dmp
memory/5024-5-0x000001B5ED090000-0x000001B5EE090000-memory.dmp
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
| MD5 | f8a0b21d34141f07cba1f353c4811d79 |
| SHA1 | 71a34ffa0d6f71512656ef74f931987e438bc81e |
| SHA256 | a932630c6f44c0bad0d7ffc0b82b425aca292cdac6e50a6bb035a7a72a371f98 |
| SHA512 | 9f444163548875c4d1c22b145222b76fb45bbf0442a4e639fab4de96eb5922ebf5e985cb21cc4955841eaf95b6c8d742ba812b1dfa962917e2989b5f77140541 |
memory/5024-20-0x000001B5EBA30000-0x000001B5EBA31000-memory.dmp
memory/5024-21-0x000001B5EBA30000-0x000001B5EBA31000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\scr.txt
| MD5 | ad1869d6f0b2b809394605d3e73eeb74 |
| SHA1 | 4bdedd14bfea9f891b98c4cc82c5f82a58df67f6 |
| SHA256 | 7e9cde40095f2a877375cb30fecd4f64cf328e3ab11baed5242f73cbb94bd394 |
| SHA512 | 8fe0f269daf94feaa246a644dbeeda52916855f1d2bfd2c6c876c7c9c80b0ceb7e42caf0b64a70bda9a64d4529b885aaa38998a515d6abbe88ad367e72324136 |
memory/5024-29-0x000001B5EBA30000-0x000001B5EBA31000-memory.dmp