| File name: | C:\Users\admin\Desktop\OsuBuddy!.exe |
| Full analysis: | https://app.any.run/tasks/526aa18c-e7cf-46a9-b300-2ba79de95478 |
| Verdict: | Malicious activity |
| Threats: | AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions. |
| Analysis date: | June 21, 2021, 23:22:39 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 4E6876C231D290666E86211B806D11B1 |
| SHA1: | 73D0DBF89CA959A843FA8A348516823E0375938C |
| SHA256: | 201F505B4370813EC2D770778CACB0201F4E9338453E366F4262A9C8DD28CB31 |
| SSDEEP: | 6144:k0fwhgvClUqYQO8CwZo6wh9zwFLt5esSuR8UR7WPNhBlJ7wv:chgAd5Gbb8quR8UR7WfNEv |
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
| AssemblyVersion: | 1.0.0.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | TDD Katas |
| OriginalFileName: | U6tb.exe |
| LegalTrademarks: | - |
| LegalCopyright: | Copyright © 2011 - 2021 |
| InternalName: | U6tb.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | TDD Katas |
| CompanyName: | - |
| Comments: | - |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x5b28e |
| UninitializedDataSize: | - |
| InitializedDataSize: | 2048 |
| CodeSize: | 365568 |
| LinkerVersion: | 48 |
| PEType: | PE32 |
| TimeStamp: | 2021:06:21 22:27:13+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 21-Jun-2021 20:27:13 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | TDD Katas |
| FileVersion: | 1.0.0.0 |
| InternalName: | U6tb.exe |
| LegalCopyright: | Copyright © 2011 - 2021 |
| LegalTrademarks: | - |
| OriginalFilename: | U6tb.exe |
| ProductName: | TDD Katas |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 21-Jun-2021 20:27:13 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x000592B4 | 0x00059400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.66279 |
.rsrc | 0x0005C000 | 0x000005AC | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.09388 |
.reloc | 0x0005E000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
mscoree.dll |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1500 | "C:\Users\admin\AppData\Local\Temp\OsuBuddy!.exe" | C:\Users\admin\AppData\Local\Temp\OsuBuddy!.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: TDD Katas Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2452 | "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\goyPJxbCS" /XML "C:\Users\admin\AppData\Local\Temp\tmp4D0D.tmp" | C:\Windows\System32\schtasks.exe | — | OsuBuddy!.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2916 | "{path}" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | OsuBuddy!.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: MSBuild.exe Exit code: 0 Version: 4.7.3062.0 built by: NET472REL1 Modules
| |||||||||||||||
| 3496 | powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\admin\AppData\Local\Temp\miuftg.exe"' | 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: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3716 | "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\admin\AppData\Local\Temp\miuftg.exe"' & exit | C:\Windows\System32\cmd.exe | — | MSBuild.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) Modules
| |||||||||||||||
| (PID) Process: | (1500) OsuBuddy!.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (1500) OsuBuddy!.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (2916) MSBuild.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2916) MSBuild.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (2916) MSBuild.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (3496) powershell.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13D\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (3496) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3496) powershell.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1500 | OsuBuddy!.exe | C:\Users\admin\AppData\Local\Temp\tmp4D0D.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Cab6548.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Tar6549.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Cab655A.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Tar655B.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Cab65E9.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Tar65EA.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Cab6668.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Tar6669.tmp | — | |
MD5:— | SHA256:— | |||
| 2916 | MSBuild.exe | C:\Users\admin\AppData\Local\Temp\Cab6698.tmp | — | |
MD5:— | SHA256:— | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2916 | MSBuild.exe | GET | 304 | 67.27.234.126:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 58.6 Kb | whitelisted |
2916 | MSBuild.exe | GET | 200 | 67.27.234.126:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 58.6 Kb | whitelisted |
2916 | MSBuild.exe | GET | 304 | 67.27.234.126:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 58.6 Kb | whitelisted |
2916 | MSBuild.exe | GET | 304 | 67.27.234.126:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 58.6 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2916 | MSBuild.exe | 37.221.121.20:6606 | jeazerx.duckdns.org | — | — | malicious |
2916 | MSBuild.exe | 67.27.234.126:80 | www.download.windowsupdate.com | Level 3 Communications, Inc. | US | suspicious |
Domain | IP | Reputation |
|---|---|---|
jeazerx.duckdns.org |
| malicious |
www.download.windowsupdate.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
1040 | svchost.exe | Misc activity | ET INFO DYNAMIC_DNS Query to *.duckdns. Domain |
2916 | MSBuild.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (AsyncRAT Server) |