| File name: | Bloxstrap.exe |
| Full analysis: | https://app.any.run/tasks/6b1f9382-a126-4cb3-a472-2ebf702610a6 |
| Verdict: | Malicious activity |
| Threats: | DCrat, also known as Dark Crystal RAT, is a remote access trojan (RAT), which was first introduced in 2018. It is a modular malware that can be customized to perform different tasks. For instance, it can steal passwords, crypto wallet information, hijack Telegram and Steam accounts, and more. Attackers may use a variety of methods to distribute DCrat, but phishing email campaigns are the most common. |
| Analysis date: | February 01, 2025, 01:33:51 |
| 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, 6 sections |
| MD5: | 7D0AC85C812C0C63C9C7D83E9C0F1593 |
| SHA1: | 57CAF4A693D1057722F036B1098112D6006B0B8E |
| SHA256: | 4EF27956476452340A3917BF9CC5712D4DB58016AE1B370C2499F9BA934930CA |
| SSDEEP: | 24576:Oy7Gs0RMnQlvPttykeRKYyNl3iE0n/xr6L:Oy7GRR+Qlv1thegYyNl3KJI |
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2022:03:03 13:15:57+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.3 |
| CodeSize: | 203776 |
| InitializedDataSize: | 261632 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1f530 |
| OSVersion: | 5.1 |
| ImageVersion: | - |
| SubsystemVersion: | 5.1 |
| Subsystem: | Windows GUI |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1228 | schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Users\admin\AppData\Roaming\lsass.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1944 | schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Users\admin\Contacts\Idle.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2144 | schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\admin\Contacts\Idle.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2192 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2796 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | UCPDMgr.exe | |||||||||||
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3420 | schtasks.exe /create /tn "NetPerfN" /sc MINUTE /mo 7 /tr "'C:\Users\admin\AppData\Local\Temp\serverSavesRef\NetPerf.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3436 | schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Public\RuntimeBroker.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3544 | schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Users\Public\RuntimeBroker.exe'" /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3688 | schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\admin\AppData\Roaming\lsass.exe'" /rl HIGHEST /f | C:\Windows\System32\schtasks.exe | — | WmiPrvSE.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Task Scheduler Configuration Tool Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 3832 | chcp 65001 | C:\Windows\System32\chcp.com | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Change CodePage Utility Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| (PID) Process: | (6436) Bloxstrap.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.vbe\OpenWithProgids |
| Operation: | write | Name: | VBEFile |
Value: | |||
| (PID) Process: | (6972) NetPerf.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\4961d9d27ceea6e1cc3a074ef4e83ea5ec01dbb5 |
| Operation: | write | Name: | b413585ffeda1039cae8043a72d84577cf14befd |
Value: H4sIAAAAAAAEAI2OQQrCMBBFryJdiwdwV9ONIFpqXTkuxvRHQqdNSdLi8Y0iIhTB3fB48/jnTK2JTgE+EBUwPEokUs61FolUYx9th413LfwKd2TL7wduOts/9T6yjglsG8Fcy0UW7/NgjNVQYnVbu1T/2cyHoeDIaYLjBG5EEjiEuV+O11T7d+onu3OahahGNxAlZYI/8oRQwRDtEUt486pcHsWB25MjAQAA | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6436 | Bloxstrap.exe | C:\Users\admin\AppData\Local\Temp\serverSavesRef\3gOVZ23zQNCGXubHDq5RYKJDNatb0cVuRJAPIXfiX3P4C0ctwa76ZRM75Ly.bat | text | |
MD5:BBD80C632B54B9984FF124EB4CFE30C1 | SHA256:6AC839209531C540F614ABA8482EC6FB6421E32B930A5678F7E5400DD4878911 | |||
| 6972 | NetPerf.exe | C:\Users\admin\Desktop\GwxrMPdE.log | executable | |
MD5:F4B38D0F95B7E844DD288B441EBC9AAF | SHA256:AAB95596475CA74CEDE5BA50F642D92FA029F6F74F6FAEAE82A9A07285A5FB97 | |||
| 6436 | Bloxstrap.exe | C:\Users\admin\AppData\Local\Temp\serverSavesRef\NetPerf.exe | executable | |
MD5:3B3150C0D90BFEDC4A3877E2BB49C83C | SHA256:AFF028C918927D5846082030807EAB0206F568A34CBCF3009D8B2EA097381BA6 | |||
| 6436 | Bloxstrap.exe | C:\Users\admin\AppData\Local\Temp\serverSavesRef\DfkQIvF4rFpxSYla9ESQLqjcSrucB90Yjrua0niLwp0YOuv4r26Q3iH5xEP7.vbe | binary | |
MD5:36E7176FBD24770249EE450C572A43EA | SHA256:447F0EB0790A72A9BE6FE30FCCBFC87164D079E94FBA2F2B88360B24B176EFEE | |||
| 6972 | NetPerf.exe | C:\Users\admin\Desktop\BIfsjSOQ.log | executable | |
MD5:D8BF2A0481C0A17A634D066A711C12E9 | SHA256:2B93377EA087225820A9F8E4F331005A0C600D557242366F06E0C1EAE003D669 | |||
| 6972 | NetPerf.exe | C:\Users\Default\AppData\Local\Microsoft\Windows\INetCookies\9e8d7a4ca61bd9 | text | |
MD5:E844BC128C802F61AD331431D7671D18 | SHA256:977866C895132AB46FB3569FFDC645616FD0C72270A4901EE06FB41009253EDC | |||
| 6972 | NetPerf.exe | C:\ProgramData\e6c9b481da804f | text | |
MD5:F371BB450F92246778888DC61EAF5E10 | SHA256:CED1201A3120BD38BDD744661A167BBEA1621D14EC61F264458F142D14E0EEFA | |||
| 6972 | NetPerf.exe | C:\Users\admin\Contacts\Idle.exe | executable | |
MD5:3B3150C0D90BFEDC4A3877E2BB49C83C | SHA256:AFF028C918927D5846082030807EAB0206F568A34CBCF3009D8B2EA097381BA6 | |||
| 6972 | NetPerf.exe | C:\Users\admin\Contacts\6ccacd8608530f | text | |
MD5:E2435311C0140166AE1BE29B721054F6 | SHA256:BE6E9B7F388E5DACB23562CA3642726817CA8DE877E2B6DEF9762B1F6E75509E | |||
| 6972 | NetPerf.exe | C:\Users\Default\AppData\Local\Microsoft\Windows\INetCookies\RuntimeBroker.exe | executable | |
MD5:3B3150C0D90BFEDC4A3877E2BB49C83C | SHA256:AFF028C918927D5846082030807EAB0206F568A34CBCF3009D8B2EA097381BA6 | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1176 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
— | — | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 2.16.164.120:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
6164 | backgroundTaskHost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
6892 | RuntimeBroker.exe | POST | 200 | 104.21.95.93:80 | http://097780cm.nyashnyash.ru/secureHttpMultilinuxTrackuploadsdownloads.php | unknown | — | — | malicious |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 2.16.164.120:80 | crl.microsoft.com | Akamai International B.V. | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1176 | svchost.exe | 20.190.160.128:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
1176 | svchost.exe | 2.23.77.188:80 | — | AKAMAI-AS | DE | unknown |
— | — | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
2736 | svchost.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
4712 | MoUsoCoreWorker.exe | 40.127.240.158:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
1076 | svchost.exe | 184.28.89.167:443 | go.microsoft.com | AKAMAI-AS | US | whitelisted |
4712 | MoUsoCoreWorker.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2736 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
Domain | IP | Reputation |
|---|---|---|
crl.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
097780cm.nyashnyash.ru |
| malicious |
arc.msn.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
6892 | RuntimeBroker.exe | A Network Trojan was detected | ET MALWARE [ANY.RUN] DarkCrystal Rat Check-in (POST) |
6892 | RuntimeBroker.exe | A Network Trojan was detected | REMOTE [ANY.RUN] DarkCrystal Rat Check-in (POST) |