| File name: | blue_skull.exe |
| Full analysis: | https://app.any.run/tasks/2e4379b8-944a-437f-bee9-a962ea135416 |
| Verdict: | Malicious activity |
| Analysis date: | April 08, 2021, 07:54:48 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 74B94B14668EA1070980D221C963C628 |
| SHA1: | 61A0FDC4418C0812C7C660D7E0ABDE02D6EA178B |
| SHA256: | 6485AF5032466D4171F7B8DC6E819A9638B3845ACE73309681F4763AE3430A3A |
| SSDEEP: | 1536:MougyGBWoV5vNX+sfrPrfDAN/f+x8mOqGL63X5aUV1nt0PcPW8ih+wVcl:NyGs0RFfjrfDE/Gx8mOYn5aUVE84+qY |
MALICIOUS
Changes the autorun value in the registry
- blue_skull.exe (PID: 3180)
- blue_skull.exe (PID: 2496)
- blue_skull.exe (PID: 2672)
- blue_skull.exe (PID: 952)
Task Manager has been disabled (taskmgr)
- blue_skull.exe (PID: 3180)
- blue_skull.exe (PID: 2496)
- blue_skull.exe (PID: 2672)
- blue_skull.exe (PID: 952)
UAC/LUA settings modification
- blue_skull.exe (PID: 2496)
- blue_skull.exe (PID: 3180)
- blue_skull.exe (PID: 2672)
- blue_skull.exe (PID: 952)
SUSPICIOUS
No suspicious indicators.INFO
Manual execution by user
- blue_skull.exe (PID: 956)
- blue_skull.exe (PID: 2496)
- verclsid.exe (PID: 2300)
- blue_skull.exe (PID: 2672)
- blue_skull.exe (PID: 3932)
- blue_skull.exe (PID: 952)
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.) (82.9) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (7.4) |
| .exe | | | Win32 Executable (generic) (5.1) |
| .exe | | | Generic Win/DOS Executable (2.2) |
| .exe | | | DOS Executable Generic (2.2) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2084:06:15 03:16:54+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 56320 |
| InitializedDataSize: | 120832 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xfa8e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| 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: | blue_skull |
| FileVersion: | 1.0.0.0 |
| InternalName: | blue_skull.exe |
| LegalCopyright: | Copyright © 2020 |
| LegalTrademarks: | - |
| OriginalFileName: | blue_skull.exe |
| ProductName: | blue_skull |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 09-May-1948 18:48:38 |
| Debug artifacts: |
|
| Comments: | - |
| CompanyName: | - |
| FileDescription: | blue_skull |
| FileVersion: | 1.0.0.0 |
| InternalName: | blue_skull.exe |
| LegalCopyright: | Copyright © 2020 |
| LegalTrademarks: | - |
| OriginalFilename: | blue_skull.exe |
| ProductName: | blue_skull |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
DOS Header
| 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 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 09-May-1948 18:48:38 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x0000DA94 | 0x0000DC00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.6035 |
.rsrc | 0x00010000 | 0x0001D488 | 0x0001D600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.17042 |
.reloc | 0x0002E000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00772 | 3168 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 1.55491 | 67624 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 1.89201 | 16936 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 2.08479 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 2.35531 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
6 | 2.85743 | 1128 | UNKNOWN | UNKNOWN | RT_ICON |
32512 | 2.79908 | 90 | UNKNOWN | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
59
Monitored processes
8
Malicious processes
4
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 952 | "C:\Users\admin\Desktop\blue_skull.exe" | C:\Users\admin\Desktop\blue_skull.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Description: blue_skull Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 956 | "C:\Users\admin\Desktop\blue_skull.exe" | C:\Users\admin\Desktop\blue_skull.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: blue_skull Exit code: 3221226540 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2300 | "C:\Windows\system32\verclsid.exe" /S /C {0B2C9183-C9FA-4C53-AE21-C900B0C39965} /I {0C733A8A-2A1C-11CE-ADE5-00AA0044773D} /X 0x401 | C:\Windows\system32\verclsid.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Extension CLSID Verification Host Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 2496 | "C:\Users\admin\Desktop\blue_skull.exe" | C:\Users\admin\Desktop\blue_skull.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Description: blue_skull Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2672 | "C:\Users\admin\Desktop\blue_skull.exe" | C:\Users\admin\Desktop\blue_skull.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Description: blue_skull Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2780 | "C:\Users\admin\AppData\Local\Temp\blue_skull.exe" | C:\Users\admin\AppData\Local\Temp\blue_skull.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: blue_skull Exit code: 3221226540 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3180 | "C:\Users\admin\AppData\Local\Temp\blue_skull.exe" | C:\Users\admin\AppData\Local\Temp\blue_skull.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Description: blue_skull Exit code: 4294967295 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3932 | "C:\Users\admin\Desktop\blue_skull.exe" | C:\Users\admin\Desktop\blue_skull.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: blue_skull Exit code: 3221226540 Version: 1.0.0.0 Modules
| |||||||||||||||
Total events
96
Read events
55
Write events
41
Delete events
0
Modification events
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | FilterAdministratorToken |
Value: 1 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | EnableLUA |
Value: 0 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | blue_skull |
Value: C:\Users\admin\AppData\Local\Temp\blue_skull.exe | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System |
| Operation: | write | Name: | DisableTaskMgr |
Value: 1 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows |
| Operation: | write | Name: | blue_skull_confirm |
Value: 1 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\blue_skull_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\blue_skull_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\blue_skull_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\blue_skull_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: 4294901760 | |||
| (PID) Process: | (3180) blue_skull.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\blue_skull_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
Executable files
0
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3180 | blue_skull.exe | C:\norm9.wav | html | |
MD5:2149311134367871AEFD64FFC2BFEBD1 | SHA256:EE1F0C0170633410DD2EC401D381486C988DED4C00A42CAE7E503404A9261FAC | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
2
DNS requests
2
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3180 | blue_skull.exe | GET | 200 | 104.16.202.237:80 | http://www.mediafire.com/download_repair.php?flag=4&dkey=1vwen5963gx&qkey=k3tg8tcsyndp40c&ip=85.203.34.125&ref=3 | US | html | 40.9 Kb | shared |
3180 | blue_skull.exe | GET | 302 | 205.196.123.203:80 | http://download1515.mediafire.com/1vwen5963gxg/k3tg8tcsyndp40c/ | US | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
3180 | blue_skull.exe | 104.16.202.237:80 | www.mediafire.com | Cloudflare Inc | US | unknown |
3180 | blue_skull.exe | 205.196.123.203:80 | download1515.mediafire.com | MediaFire, LLC | US | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
download1515.mediafire.com |
| unknown |
www.mediafire.com |
| shared |