| File name: | yuki.exe |
| Full analysis: | https://app.any.run/tasks/a3d0b327-9fee-4437-86c9-bd9f8c5e1782 |
| Verdict: | Malicious activity |
| Threats: | Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. |
| Analysis date: | November 07, 2024, 07:34:59 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (GUI) x86-64, for MS Windows, 6 sections |
| MD5: | 75F2C40C5FD05B5824D88867C17AFB49 |
| SHA1: | 9E29B9A694B3010DEF637B18F245CA8635723649 |
| SHA256: | 1C0D63ED602D3C5B4C7FEA32E801AB1B2610F7E9D50C3CCB7CA9550810EA2E0A |
| SSDEEP: | 393216:zJkIR1w4GGeqdCpDv//6dcjY+0bnd2AnRxvKO4BQ4L8nWTGS:1F64GvqdCpD35jYhbnd2AnRD4BXeS |
| .exe | | | Win64 Executable (generic) (87.3) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (6.3) |
| .exe | | | DOS Executable Generic (6.3) |
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2024:11:07 01:23:04+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32+ |
| LinkerVersion: | 14.41 |
| CodeSize: | 172032 |
| InitializedDataSize: | 185856 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xcdb0 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 10.0.22621.3296 |
| ProductVersionNumber: | 10.0.22621.3296 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Windows NT 32-bit |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Unicode |
| CompanyName: | Microsoft Corporation |
| FileDescription: | Microsoft® Group Policy Update Utility |
| FileVersion: | 10.0.22621.3296 (WinBuild.160101.0800) |
| InternalName: | GPUpdate.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| OriginalFileName: | GPUpdate.exe |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 10.0.22621.3296 |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 204 | "C:\WINDOWS\system32\NOTEPAD.EXE" C:\Users\admin\Desktop\clipboard.txt | C:\Windows\System32\notepad.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Notepad Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1784 | C:\WINDOWS\system32\cmd.exe /c attrib +h +s "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ .scr" | C:\Windows\System32\cmd.exe | — | yuki.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2736 | attrib +h +s "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ .scr" | C:\Windows\System32\attrib.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Attribute Utility Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3276 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3644 | powershell.exe -command "Set-MpPreference -ExclusionExtension '.exe','.py'" | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3832 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4516 | powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath C:\Users\admin\Local" | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5532 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5532 | "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n C:\Users\admin\Desktop\sharescore.rtf /o "" | C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Word Exit code: 0 Version: 16.0.16026.20146 Modules
| |||||||||||||||
| 5596 | "C:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ai.exe" "B1EDA62D-C76C-4546-B754-60CED048CA68" "09DBDDCE-7E4B-4166-838B-23DB6A711E62" "7148" | C:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ai.exe | — | WINWORD.EXE | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Artificial Intelligence (AI) Host for the Microsoft® Windows® Operating System and Platform x64. Version: 0.12.2.0 Modules
| |||||||||||||||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\ClientTelemetry\Sampling |
| Operation: | write | Name: | 0 |
Value: 017012000000001000B24E9A3E01000000000000000500000000000000 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\CrashPersistence\WINWORD\5932 |
| Operation: | delete value | Name: | 0 |
Value: ซ괐殺ࠆꯞꝅ莼跳⏺䘅헉꾍樁င$梅摝麨
ީ湕湫睯쥮賙ᒳ肫 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\CrashPersistence\WINWORD\5932 |
| Operation: | delete key | Name: | (default) |
Value: | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\CrashPersistence\WINWORD\7132 |
| Operation: | write | Name: | 0 |
Value: 0B0E104C5A3DED7F9539408345FDE2B777BEBD230046C2ED9DD6FB9CCCED016A04102400449A7D64B29D01008500A907556E6B6E6F776EC906022222CA0DC2190000C91003783634C511DC37D2120B770069006E0077006F00720064002E00650078006500C51620C517808004C91808323231322D44656300 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | en-US |
Value: 2 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | de-de |
Value: 2 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | fr-fr |
Value: 2 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | es-es |
Value: 2 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | it-it |
Value: 2 | |||
| (PID) Process: | (7132) WINWORD.EXE | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages |
| Operation: | write | Name: | ja-jp |
Value: 2 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_Salsa20.pyd | executable | |
MD5:3F6E73B2151A1529EF30763ACBD63189 | SHA256:3000A4E4B6D62ED2AA8FC3ACA1BEE21E03D7EEFE961DB8E0872D51F7F8FB094B | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_chacha20.pyd | executable | |
MD5:58FDF64B67A7AF0FEBAFA9BE53094C66 | SHA256:4B94B9A948C626E34ACCCE67C09524972719E7D82865B6981BF668E976F616F6 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_arc2.pyd | executable | |
MD5:0072BBD2B1AAA845C289884C3FC3E6CA | SHA256:784751702CCAEE36641973C5B40990993341AA0FB42B45526930DC9823B14D21 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_aes.pyd | executable | |
MD5:D4606F55CFDAB1FA41BC4A69AA0F5F91 | SHA256:DF26C8E5052CB05A96D6FAB0824BB4E4C04A10EA45AD3B56DB3FE00B695E7156 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_ARC4.pyd | executable | |
MD5:111EEC367590B8ABB73825FB77232995 | SHA256:5F2F2122D5DEAF302D0795A0C942F29306350B607AE8E5ABDFC96E08E287B632 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_pkcs1_decode.pyd | executable | |
MD5:BE4016AB120672923BF3C01240B87DF0 | SHA256:0541E52B4EFA3DD911C14A67A104FE1207EA15A33BB8F94A928395BCA9B32AF2 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_aesni.pyd | executable | |
MD5:77EB782D3A1C0BA6134D3C74093058A9 | SHA256:098082E71F5A88F72AA478296D533A6F14F4966DF05DB2DC7014910146BA9C48 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_blowfish.pyd | executable | |
MD5:3AAFD580A6EB129D6FA81676AEDC17AF | SHA256:8035581ED2F8BD52C747EE78E8739C9353C00020A7CF6B352B91741B2D83E2A0 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_ctr.pyd | executable | |
MD5:D9AA56216FD9B7443B5431E3964668F3 | SHA256:06B9A3AC04E09F51296261F1E3178DEE84038FEA11A33EFC76E71430506BDFD7 | |||
| 6936 | yuki.exe | C:\Users\admin\AppData\Local\Temp\_MEI69362\Cryptodome\Cipher\_raw_cbc.pyd | executable | |
MD5:E116F8C6A7376154E6610A6B9BBD7D87 | SHA256:6A44880996AEBA9B04ACF3383E9A5ACC93682FE66644A9E2BC3EA5DEFC08E09B | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6944 | svchost.exe | GET | 200 | 23.216.77.21:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.216.77.21:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.216.77.21:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6944 | svchost.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.52.120.96:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.50.131.85:443 | https://omex.cdn.office.net/addinclassifier/officesharedentities | unknown | text | 314 Kb | whitelisted |
— | — | GET | 200 | 23.53.43.83:443 | https://metadata.templates.cdn.office.net/client/templates/gallery?lcid=1033&syslcid=1033&uilcid=1033&app=0&ver=16&tl=2&build=16.0.16026>ype=0%2C1%2C2%2C5%2C | unknown | xml | 10.7 Kb | whitelisted |
— | — | GET | 200 | 52.111.236.7:443 | https://messaging.lifecycle.office.com/getcustommessage16?app=0&ui=en-US&src=BizBar&messagetype=BizBar&hwid=04111-083-043729&ver=16.0.16026&lc=en-US&platform=10%3A0%3A19045%3A2%3A0%3A0%3A256%3A1%3A&productid=%7B1717C1E0-47D3-4899-A6D3-1022DB7415E0%7D%3A00411-10830-43729-AA720%3AOffice%2019%2C%20Office19Professional2019R_Retail%20edition&clientsessionid=%7B61E80058-6FCC-4707-86FF-1A631FB14E83%7D&datapropertybag=%7B%22Audience%22%3A%22Production%22%2C%22AudienceGroup%22%3A%22Production%22%2C%22AudienceChannel%22%3A%22CC%22%2C%22Flight%22%3A%22ofsh6c2b1tla1a31%2Cofcrui4yvdulbf31%2Cofhpex3jznepoo31%2Cofpioygfqmufst31%2Cofjhlwlmoc1pz531%22%7D | unknown | text | 542 b | whitelisted |
— | — | GET | 200 | 52.113.194.132:443 | https://ecs.office.com/config/v2/Office/word/16.0.16026.20146/Production/CC?&Clientid=%7bD61AB268-C26A-439D-BB15-2A0DEDFCA6A3%7d&Application=word&Platform=win32&Version=16.0.16026.20146&MsoVersion=16.0.16026.20002&SDX=fa000000002.2.0.1907.31003&SDX=fa000000005.1.0.1909.30011&SDX=fa000000006.1.0.1909.13002&SDX=fa000000008.1.0.1908.16006&SDX=fa000000009.1.0.1908.6002&SDX=fa000000016.1.0.1810.13001&SDX=fa000000029.1.0.1906.25001&SDX=fa000000033.1.0.1908.24001&SDX=wa104381125.1.0.1810.9001&ProcessName=winword.exe&Audience=Production&Build=ship&Architecture=x64&Language=en-US&SubscriptionLicense=false&PerpetualLicense=2019&LicenseCategory=6&LicenseSKU=Professional2019Retail&OsVersion=10.0&OsBuild=19045&Channel=CC&InstallType=C2R&SessionId=%7bED3D5A4C-957F-4039-8345-FDE2B777BEBD%7d&LabMachine=false | unknown | binary | 381 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 4.231.128.59:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6944 | svchost.exe | 23.216.77.21:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 23.216.77.21:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5488 | MoUsoCoreWorker.exe | 23.216.77.21:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 23.52.120.96:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
6944 | svchost.exe | 23.52.120.96:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5488 | MoUsoCoreWorker.exe | 23.52.120.96:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
gstatic.com |
| whitelisted |
raw.githubusercontent.com |
| shared |
discord.com |
| whitelisted |
officeclient.microsoft.com |
| whitelisted |
omex.cdn.office.net |
| whitelisted |
ecs.office.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
— | — | Not Suspicious Traffic | INFO [ANY.RUN] Attempting to access raw user content on GitHub |
2172 | svchost.exe | Misc activity | ET INFO Observed Discord Domain in DNS Lookup (discord .com) |
5980 | yuki.exe | Misc activity | ET INFO Observed Discord Domain (discord .com in TLS SNI) |
Process | Message |
|---|---|
WINWORD.EXE | WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
|
WINWORD.EXE | WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
|
WINWORD.EXE | WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
|