| File name: | RtkBtManServ.exe |
| Full analysis: | https://app.any.run/tasks/561bbc97-f550-41fd-9dbf-ea03d09be5aa |
| 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: | January 17, 2025, 19:12:56 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | 3405F654559010CA2AE38D786389F0F1 |
| SHA1: | 8AC5552C64DFC3CCF0C678F6F946EE23719CF43D |
| SHA256: | BC1364D8E68F515F9F35A6B41C11A649B1F514302EB01812C68C9A95A3198B30 |
| SSDEEP: | 98304:lQf3s64R9ybzUcwti78OqJ7TPBF3ZlHHgkWJ0P39qXSaDvs:ozUcwti7TQlF3ZxxWJSUnDvs |
MALICIOUS
DISCORDGRABBER has been detected (YARA)
- RtkBtManServ.exe (PID: 5720)
SUSPICIOUS
Executes application which crashes
- RtkBtManServ.exe (PID: 5720)
Executable content was dropped or overwritten
- RtkBtManServ.exe (PID: 5720)
INFO
Reads the computer name
- RtkBtManServ.exe (PID: 5720)
The sample compiled with english language support
- RtkBtManServ.exe (PID: 5720)
Reads the machine GUID from the registry
- RtkBtManServ.exe (PID: 5720)
Checks supported languages
- RtkBtManServ.exe (PID: 5720)
UPX packer has been detected
- RtkBtManServ.exe (PID: 5720)
Checks proxy server information
- WerFault.exe (PID: 6460)
Creates files or folders in the user directory
- WerFault.exe (PID: 6460)
Reads the software policy settings
- WerFault.exe (PID: 6460)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (32.4) |
|---|---|---|
| .exe | | | InstallShield setup (19) |
| .exe | | | Win64 Executable (generic) (12.2) |
| .exe | | | UPX compressed Win32 Executable (11.9) |
| .exe | | | Win32 EXE Yoda's Crypter (11.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2022:04:07 23:09:01+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 4662784 |
| InitializedDataSize: | 2560 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x4745ce |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.0.0.0 |
| ProductVersionNumber: | 1.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | RtkBtManServ |
| FileVersion: | 1.0.0.0 |
| InternalName: | RtkBtManServ.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| LegalTrademarks: | - |
| OriginalFileName: | RtkBtManServ.exe |
| ProductName: | Microsoft® Windows® Operating System |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
128
Monitored processes
2
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5720 | "C:\Users\admin\AppData\Local\Temp\RtkBtManServ.exe" | C:\Users\admin\AppData\Local\Temp\RtkBtManServ.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: RtkBtManServ Exit code: 3762504530 Version: 1.0.0.0 Modules
| |||||||||||||||
| 6460 | C:\WINDOWS\SysWOW64\WerFault.exe -u -p 5720 -s 1052 | C:\Windows\SysWOW64\WerFault.exe | RtkBtManServ.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Problem Reporting Exit code: 0 Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
3 276
Read events
3 276
Write events
0
Delete events
0
Modification events
Executable files
6
Suspicious files
23
Text files
5
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\bfsvc.exe | executable | |
MD5:899D3ED011EB58459B8A4FC2B81F0924 | SHA256:5E3F311AE67F046B56435067BCDD39FBF836FA0421FBC8C8B0E43E8E47524954 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.dotnetzip.dll.compressed | binary | |
MD5:D8DDF1B53026B9CD42CB65CBA187F726 | SHA256:1C180A0267230CB43C84ED8CD3B2BD1A660C54AED994001ECFE94CF71D951FF6 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.discord webhook.dll.compressed | binary | |
MD5:F999480EC537EC2126251977CBF8F4E3 | SHA256:84E5C3EAC27895AB23B9F827F9B259F5A1277D4A7F1930D04638FBF47AD4D2CE | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\winhlp32.exe | executable | |
MD5:A776E68F497C996788B406A3DC5089EB | SHA256:071E26DDF5323DD9ED6671BCDE89DF73D78BAC2336070E6CB9E3E4B93BDE78D1 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\splwow64.exe | executable | |
MD5:0D8360781E488E250587A17FBEFA646C | SHA256:EBFF7D07EFDA7245192CE6ECD7767578152B515B510C887CA2880A2566071F64 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.costura.dll.compressed | binary | |
MD5:DFA70BBC35ACCB7617E8CF6E310E0846 | SHA256:EC3F2D2CB63B06A7FF7FE3559F8E6776D16496500351DA3793C626DDE2BDDF0C | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.discord.net.core.dll.compressed | binary | |
MD5:4104898CA34FEBB688ED63812EFE8CF4 | SHA256:265850B1887F252E04C54F81EF872587B3CFD66B0D708621D2520BC6D4BBDCAC | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.dotnetzip.pdb.compressed | binary | |
MD5:74D98C2F5DF1ABC721DB40D7A8760EF9 | SHA256:2E4A99ACCFEBE28E54AB148B95E7012EC9CF72A5DE1CB3AB5BC7969EBF41BCE6 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.leaf.xnet.dll.compressed | binary | |
MD5:0AD33C90F041E1CB9AE4AF2AF8D6820F | SHA256:054BA51F8449070443A3F04723AE65B1C8D8D22BA0A047DCFD25E62D638D1F21 | |||
| 5720 | RtkBtManServ.exe | C:\Users\admin\AppData\Local\Temp\costura.discord.net.rest.dll.compressed | binary | |
MD5:D6A7F43AE8A52CB3BC0FF519165EA27F | SHA256:0D16D9476BAEC37CE9C6B6645EE2031858DCEC557ABE57EDCD6E9FDAE5EC131A | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
11
TCP/UDP connections
36
DNS requests
19
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
4712 | MoUsoCoreWorker.exe | GET | 200 | 2.16.241.19:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 2.16.241.19:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
5064 | SearchApp.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
6460 | WerFault.exe | GET | 200 | 184.24.77.42:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6460 | WerFault.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6152 | backgroundTaskHost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
7024 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.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 |
|---|---|---|---|---|---|---|
— | — | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | 2.16.241.19:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 2.16.241.19:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
4712 | MoUsoCoreWorker.exe | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5064 | SearchApp.exe | 2.23.227.208:443 | www.bing.com | Ooredoo Q.S.C. | QA | whitelisted |
1076 | svchost.exe | 23.32.186.57:443 | go.microsoft.com | AKAMAI-AS | BR | whitelisted |
1176 | svchost.exe | 40.126.31.69:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.bing.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
watson.events.data.microsoft.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |