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Windows
Analysis Report
BWCStartMSI.exe
Overview
General Information
Detection
Score: | 54 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Compliance
Score: | 32 |
Range: | 0 - 100 |
Signatures
Antivirus detection for URL or domain
.NET source code contains potential unpacker
Changes the wallpaper picture
PE file contains section with special chars
PE file has nameless sections
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected Generic Downloader
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Checks for available system drives (often done to infect USB drives)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to dynamically determine API calls
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to shutdown / reboot the system
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Deletes files inside the Windows folder
Detected potential crypto function
Drops PE files
Drops PE files to the windows directory (C:\Windows)
EXE planting / hijacking vulnerabilities found
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found evasive API chain checking for process token information
Found potential string decryption / allocating functions
May sleep (evasive loops) to hinder dynamic analysis
PE file contains an invalid checksum
PE file contains executable resources (Code or Archives)
PE file contains sections with non-standard names
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Potentially Suspicious Desktop Background Change Via Registry
Sigma detected: Wow6432Node CurrentVersion Autorun Keys Modification
Stores files to the Windows start menu directory
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64native
- BWCStartMSI.exe (PID: 3436 cmdline:
"C:\Users\ user\Deskt op\BWCStar tMSI.exe" MD5: 89D75B7846DB98111BE948830F9CF7C2) - BWCStartMSI.exe (PID: 1096 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\IXP000. TMP\BWCSta rtMSI.exe MD5: A923912A4643C5502E6C14F423065F11) - msiexec.exe (PID: 2928 cmdline:
"C:\Window s\System32 \msiexec.e xe" /q /i BWCInstall er.msi /no restart MD5: 9D09DC1EDA745A5F87553048E57620CF)
- msiexec.exe (PID: 4176 cmdline:
C:\Windows \system32\ msiexec.ex e /V MD5: E5DA170027542E25EDE42FC54C929077) - msiexec.exe (PID: 4324 cmdline:
C:\Windows \syswow64\ MsiExec.ex e -Embeddi ng 1E7C6F8 FE305CF59F C9AE1ED420 6AF89 MD5: 9D09DC1EDA745A5F87553048E57620CF) - rundll32.exe (PID: 3516 cmdline:
rundll32.e xe "C:\Win dows\Insta ller\MSI43 43.tmp",zz zzInvokeMa nagedCusto mActionOut OfProc Sfx CA_8209281 2 CustomA ctions!Cus tomActions .CustomAct ions.Start App MD5: 889B99C52A60DD49227C5E485A016679) - BingWallpaperApp.exe (PID: 7648 cmdline:
"C:\Users\ user\AppDa ta\Local\M icrosoft\B ingWallpap erApp\Bing WallpaperA pp.exe" MD5: 5DDF6C0675019C3A758236D0DB069D15) - rundll32.exe (PID: 3400 cmdline:
rundll32.e xe "C:\Win dows\Insta ller\MSI47 2C.tmp",zz zzInvokeMa nagedCusto mActionOut OfProc Sfx CA_8210250 8 CustomA ctions!Cus tomActions .CustomAct ions.Insta llPing MD5: 889B99C52A60DD49227C5E485A016679)
- rundll32.exe (PID: 7644 cmdline:
"C:\Window s\system32 \rundll32. exe" C:\Wi ndows\syst em32\advpa ck.dll,Del NodeRunDLL 32 "C:\Use rs\user\Ap pData\Loca l\Temp\IXP 000.TMP\" MD5: EF3179D498793BF4234F708D3BE28633)
- BingWallpaperApp.exe (PID: 448 cmdline:
"C:\Users\ user\AppDa ta\Local\M icrosoft\B ingWallpap erApp\Bing WallpaperA pp.exe" MD5: 5DDF6C0675019C3A758236D0DB069D15)
- BingWallpaperApp.exe (PID: 3332 cmdline:
"C:\Users\ user\AppDa ta\Local\M icrosoft\B ingWallpap erApp\Bing WallpaperA pp.exe" MD5: 5DDF6C0675019C3A758236D0DB069D15)
- cleanup
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security |
System Summary |
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Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Source: | Author: Nasreddine Bencherchali (Nextron Systems), Stephen Lincoln @slincoln-aiq (AttackIQ): |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
⊘No Suricata rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira URL Cloud: | ||
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Source: | Code function: | 0_2_00952F10 | |
Source: | Code function: | 7_2_6BEFFAF0 | |
Source: | Code function: | 8_2_6CF56C80 | |
Source: | Code function: | 8_2_6CF56A90 |
Source: | EXE: | Jump to behavior | ||
Source: | EXE: | Jump to behavior |
Compliance |
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Source: | EXE: | Jump to behavior | ||
Source: | EXE: | Jump to behavior |
Source: | Static PE information: |
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Source: | File opened: | Jump to behavior | ||
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Source: | File opened: | Jump to behavior |
Source: | Code function: | 0_2_00952395 | |
Source: | Code function: | 7_2_6BEDC660 | |
Source: | Code function: | 7_2_6BED8580 | |
Source: | Code function: | 8_2_6CF537BF | |
Source: | Code function: | 8_2_6CF62D02 | |
Source: | Code function: | 8_2_6CF53FC7 |
Networking |
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Source: | File source: | ||
Source: | File source: |
Source: | UDP traffic detected without corresponding DNS query: |
Source: | String found in binary or memory: | ||
Source: | String found in binary or memory: |