| download: | /file/grass-extension-upgrades/windows-latest/Grass_4.31.2_x64-setup.exe |
| Full analysis: | https://app.any.run/tasks/e9a2cca9-12be-4b4a-bdfc-abf592aec893 |
| Verdict: | Malicious activity |
| Threats: | A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. |
| Analysis date: | January 25, 2025, 10:03:00 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections |
| MD5: | 999CEA31457D5CBF5665F86F11CFB9A3 |
| SHA1: | D28D7F3B4D27D93873DF89AB6299E9C2C483288D |
| SHA256: | C265D1AA9A512F435FA93700309F3290C66973CF1EEDB08A869709F3DD29A7B3 |
| SSDEEP: | 98304:EJ8/XUkS0ilVXJMzNhWUFlSV1LRbVYk3iB9jdkZidnMwoqlyQE6t6Kh9Vy9RyCLS:ET48xxmq6SdGdoZN0/5 |
MALICIOUS
No malicious indicators.SUSPICIOUS
Executable content was dropped or overwritten
- Grass_4.31.2_x64-setup.exe (PID: 6156)
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
Malware-specific behavior (creating "System.dll" in Temp)
- Grass_4.31.2_x64-setup.exe (PID: 6156)
Starts a Microsoft application from unusual location
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
- MicrosoftEdgeUpdate.exe (PID: 6564)
Process drops legitimate windows executable
- Grass_4.31.2_x64-setup.exe (PID: 6156)
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
- MicrosoftEdgeUpdate.exe (PID: 6564)
Process requests binary or script from the Internet
- Grass_4.31.2_x64-setup.exe (PID: 6156)
Disables SEHOP
- MicrosoftEdgeUpdate.exe (PID: 6564)
Reads security settings of Internet Explorer
- MicrosoftEdgeUpdate.exe (PID: 6564)
INFO
The sample compiled with english language support
- Grass_4.31.2_x64-setup.exe (PID: 6156)
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
- MicrosoftEdgeUpdate.exe (PID: 6564)
Checks proxy server information
- Grass_4.31.2_x64-setup.exe (PID: 6156)
- MicrosoftEdgeUpdate.exe (PID: 6564)
- wermgr.exe (PID: 6976)
Create files in a temporary directory
- Grass_4.31.2_x64-setup.exe (PID: 6156)
Checks supported languages
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
- MicrosoftEdgeUpdate.exe (PID: 6564)
Creates files in the program directory
- MicrosoftEdgeWebview2Setup.exe (PID: 6516)
Reads the computer name
- MicrosoftEdgeUpdate.exe (PID: 6564)
Reads Environment values
- MicrosoftEdgeUpdate.exe (PID: 6564)
Reads the software policy settings
- MicrosoftEdgeUpdate.exe (PID: 6564)
- wermgr.exe (PID: 6976)
Process checks computer location settings
- MicrosoftEdgeUpdate.exe (PID: 6564)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2021:09:25 21:56:47+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 26624 |
| InitializedDataSize: | 141824 |
| UninitializedDataSize: | 2048 |
| EntryPoint: | 0x3640 |
| OSVersion: | 4 |
| ImageVersion: | 6 |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 4.31.2.0 |
| ProductVersionNumber: | 4.31.2.0 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| FileDescription: | - |
| FileVersion: | 4.31.2 |
| LegalCopyright: | © Grass Foundation, 2025. All rights reserved. |
| ProductName: | Grass |
| ProductVersion: | 4.31.2 |
Total processes
130
Monitored processes
5
Malicious processes
3
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5652 | "C:\Users\admin\Desktop\Grass_4.31.2_x64-setup.exe" | C:\Users\admin\Desktop\Grass_4.31.2_x64-setup.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 3221226540 Version: 4.31.2 Modules
| |||||||||||||||
| 6156 | "C:\Users\admin\Desktop\Grass_4.31.2_x64-setup.exe" | C:\Users\admin\Desktop\Grass_4.31.2_x64-setup.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Version: 4.31.2 Modules
| |||||||||||||||
| 6516 | C:\Users\admin\AppData\Local\Temp\MicrosoftEdgeWebview2Setup.exe /silent /install | C:\Users\admin\AppData\Local\Temp\MicrosoftEdgeWebview2Setup.exe | Grass_4.31.2_x64-setup.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft Edge Update Setup Exit code: 2147747592 Version: 1.3.195.43 Modules
| |||||||||||||||
| 6564 | "C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdate.exe" /silent /install "appguid={F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}&appname=Microsoft%20Edge%20Webview2%20Runtime&needsadmin=prefers" | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdate.exe | MicrosoftEdgeWebview2Setup.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft Edge Update Exit code: 2147747592 Version: 1.3.195.43 Modules
| |||||||||||||||
| 6976 | "C:\WINDOWS\system32\wermgr.exe" "-outproc" "0" "6564" "2068" "2036" "2072" "0" "0" "0" "0" "0" "0" "0" "0" | C:\Windows\SysWOW64\wermgr.exe | MicrosoftEdgeUpdate.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Problem Reporting Exit code: 0 Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
4 002
Read events
3 968
Write events
32
Delete events
2
Modification events
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MicrosoftEdgeUpdate.exe |
| Operation: | write | Name: | DisableExceptionChainValidation |
Value: 0 | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\PersistedPings\{6F08F600-C5C4-40DF-8C7A-B5D2B2A6BB33} |
| Operation: | write | Name: | PersistedPingString |
Value: <?xml version="1.0" encoding="UTF-8"?><request protocol="3.0" updater="Omaha" updaterversion="1.3.195.43" shell_version="1.3.147.37" ismachine="1" sessionid="{5682C1BA-3E9E-4588-81BB-BBFE02B9455F}" userid="{FD984739-A122-4DB0-BE5B-46E3E09D84E4}" installsource="otherinstallcmd" requestid="{6F08F600-C5C4-40DF-8C7A-B5D2B2A6BB33}" dedup="cr" domainjoined="0"><hw logical_cpus="4" physmemory="4" disk_type="2" sse="1" sse2="1" sse3="1" ssse3="1" sse41="1" sse42="1" avx="1"/><os platform="win" version="10.0.19045.4046" sp="" arch="x64" product_type="48" is_wip="0" is_in_lockdown_mode="0"/><oem product_manufacturer="DELL" product_name="DELL"/><exp etag=""r452t1+k2Tgq/HXzjvFNBRhopBWR9sbjXxqeUDH9uX0=""/><app appid="{F3C4FE00-EFD5-403B-9569-398A20F1BA4A}" version="1.3.185.17" nextversion="1.3.195.43" lang="" brand="" client=""><event eventtype="2" eventresult="1" errorcode="0" extracode1="0" system_uptime_ticks="12827176629" install_time_ms="453"/></app></request> | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\PersistedPings\{6F08F600-C5C4-40DF-8C7A-B5D2B2A6BB33} |
| Operation: | write | Name: | PersistedPingTime |
Value: 133822729993883498 | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | \REGISTRY\A\{8abb4984-afc5-c336-cde6-2619dd28ddcb}\Root\InventoryApplicationFile |
| Operation: | write | Name: | WritePermissionsCheck |
Value: 1 | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | \REGISTRY\A\{8abb4984-afc5-c336-cde6-2619dd28ddcb}\Root\InventoryApplicationFile\PermissionsCheckTestKey |
| Operation: | delete key | Name: | (default) |
Value: | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\EdgeUpdate\proxy |
| Operation: | write | Name: | source |
Value: auto | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\PersistedPings\{6F08F600-C5C4-40DF-8C7A-B5D2B2A6BB33} |
| Operation: | delete key | Name: | (default) |
Value: | |||
| (PID) Process: | (6976) wermgr.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\IdentityCRL\ClockData |
| Operation: | write | Name: | ClockTimeSeconds |
Value: E8B6946700000000 | |||
| (PID) Process: | (6976) wermgr.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\IdentityCRL\ClockData |
| Operation: | write | Name: | TickCount |
Value: E496130000000000 | |||
| (PID) Process: | (6564) MicrosoftEdgeUpdate.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\UsageStats\Daily\Timings |
| Operation: | write | Name: | setup_lock_acquire_ms |
Value: 0300000000000000000000000000000000000000000000000000000000000000 | |||
Executable files
204
Suspicious files
9
Text files
4
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6156 | Grass_4.31.2_x64-setup.exe | C:\Users\admin\AppData\Local\Temp\nsq64DA.tmp\System.dll | executable | |
MD5:CFF85C549D536F651D4FB8387F1976F2 | SHA256:8DC562CDA7217A3A52DB898243DE3E2ED68B80E62DDCB8619545ED0B4E7F65A8 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdateComRegisterShell64.exe | executable | |
MD5:714C34FE6098B45A3303C611C4323EAE | SHA256:FBF495968C4A385FF0790E6B65D26610EF917A2B36A5387EFF7AE79D7A980AC5 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdate.exe | executable | |
MD5:70CC35C7FB88D650902E7A5611219931 | SHA256:7ECA199201273F0BCFF1E26778CB535E69C74A69064E7759FF8DAD86954D42B1 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdateOnDemand.exe | executable | |
MD5:A8652F75AD0579D14FB45BB5A6C98D23 | SHA256:E41E92F37BFDE77799E947FCE1D6E9378B4C53FB4B86905F64622691C30AD1E5 | |||
| 6156 | Grass_4.31.2_x64-setup.exe | C:\Users\admin\AppData\Local\Temp\nsq64DA.tmp\modern-wizard.bmp | image | |
MD5:35294D23C7AD734CF72E51A6265DE20F | SHA256:BD1B474C41C064F8116619D6ADA8653FD5EA3E544C62F53755011F2012EBFE76 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\psmachine_arm64.dll | executable | |
MD5:EC69BFAF00836707975CC8ADB1E8F000 | SHA256:744860280846486104FFFECF012F1502F024B142FC3FCE17BCA581B7D50DAAF0 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\psmachine.dll | executable | |
MD5:6708BC8A0A25C258EC65FCA66D7B64CE | SHA256:810796F10921B714F9AE42F97B3E601DCCB1F9B27E0C5CF59C7BA46C2FAACF19 | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\psmachine_64.dll | executable | |
MD5:886D71AA7EA1C34644AA759FB5A09B5F | SHA256:95D1B924759B36FBD2A20682E919392D64DC8C1B153F909F921DA7E57825A04C | |||
| 6156 | Grass_4.31.2_x64-setup.exe | C:\Users\admin\AppData\Local\Temp\MicrosoftEdgeWebview2Setup.exe | executable | |
MD5:B49D269A231BCF719D6DE10F6DCF0692 | SHA256:BDE514014B95C447301D9060A221EFB439C3C1F5DB53415F080D4419DB75B27E | |||
| 6516 | MicrosoftEdgeWebview2Setup.exe | C:\Program Files (x86)\Microsoft\Temp\EU8ACE.tmp\MicrosoftEdgeUpdateBroker.exe | executable | |
MD5:E5DE2B67B2B629859949DB28D614FAAB | SHA256:8C86A415557DA686214675A02A94964F07C2166C811C61542776F4BF920555CA | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
11
TCP/UDP connections
38
DNS requests
23
Threats
1
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6156 | Grass_4.31.2_x64-setup.exe | GET | 301 | 2.23.242.9:80 | http://go.microsoft.com/fwlink/p/?LinkId=2124703 | unknown | — | — | whitelisted |
6156 | Grass_4.31.2_x64-setup.exe | GET | 200 | 23.48.23.189:80 | http://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/c1336fd6-a2eb-4669-9b03-949fc70ace0e/MicrosoftEdgeWebview2Setup.exe | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5064 | SearchApp.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.37.237.227:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
7152 | SIHClient.exe | GET | 200 | 23.37.237.227:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
7152 | SIHClient.exe | GET | 200 | 23.37.237.227:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6976 | wermgr.exe | GET | 200 | 23.37.237.227:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6116 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4712 | MoUsoCoreWorker.exe | 23.48.23.143:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 23.37.237.227:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
3976 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6156 | Grass_4.31.2_x64-setup.exe | 2.23.242.9:80 | go.microsoft.com | Ooredoo Q.S.C. | QA | whitelisted |
6156 | Grass_4.31.2_x64-setup.exe | 23.48.23.189:80 | msedge.sf.dl.delivery.mp.microsoft.com | Akamai International B.V. | DE | whitelisted |
5064 | SearchApp.exe | 2.16.204.160:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
msedge.sf.dl.delivery.mp.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
config.edge.skype.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
6156 | Grass_4.31.2_x64-setup.exe | Misc activity | ET INFO Packed Executable Download |