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Windows
Analysis Report
download.ps1
Overview
General Information
| Sample name: | download.ps1 |
| Analysis ID: | 1570493 |
| MD5: | aa53e9e42c8f90023dc846e2cb391fc0 |
| SHA1: | 7508cfcd899cfe941a85d085d847b74958a93bce |
| SHA256: | 4af7ee1bbb06bf40d82f8d6c50d8624caeebd2e61fb2af97d9f8d5fe35c0d3ed |
| Tags: | KongTukeps1user-monitorsg |
| Infos: |  |
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Detection
| Score: | 68 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
AI detected suspicious sample
Found suspicious powershell code related to unpacking or dynamic code loading
Loading BitLocker PowerShell Module
Opens network shares
Powershell drops PE file
Binary contains a suspicious time stamp
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query CPU information (cpuid)
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)
Detected potential crypto function
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
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 large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
One or more processes crash
PE file contains executable resources (Code or Archives)
PE file contains sections with non-standard names
PE file does not import any functions
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Change PowerShell Policies to an Insecure Level
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
powershell.exe (PID: 7160 cmdline: "C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -noLogo -E xecutionPo licy unres tricted -f ile "C:\Us ers\user\D esktop\dow nload.ps1" MD5: 04029E121A0CFA5991749937DD22A1D9) 
conhost.exe (PID: 6256 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
check.exe (PID: 2792 cmdline: "C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - check.exe (PID: 1520 cmdline:
"C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - cmd.exe (PID: 3276 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 4568 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
WMIC.exe (PID: 1248 cmdline: wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) 
WerFault.exe (PID: 2164 cmdline: C:\Windows \system32\ WerFault.e xe -u -p 1 520 -s 892 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- check.exe (PID: 2604 cmdline:
"C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - check.exe (PID: 3608 cmdline:
"C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - cmd.exe (PID: 1532 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 5688 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 4752 cmdline:
wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - WerFault.exe (PID: 2556 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 3 608 -s 968 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- check.exe (PID: 6584 cmdline:
"C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - check.exe (PID: 5300 cmdline:
"C:\Users\ user\AppDa ta\Roaming \UvDdFNOw\ check.exe" MD5: 00152720A2C1C6969E3581E2DABC6702) - cmd.exe (PID: 4720 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 5244 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 2272 cmdline:
wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - WerFault.exe (PID: 1656 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 5 300 -s 932 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- cleanup
⊘No configs have been found
⊘No yara matches
System Summary |   |
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| Source: | Author: frack113: | ||
| Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): | ||
| Source: | Author: frack113, Nasreddine Bencherchali (Nextron Systems): | ||
| Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): | ||
⊘No Suricata rule has matched
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Show All Signature Results
AV Detection | |
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| Source: | Avira URL Cloud: | ||
| Source: | Integrated Neural Analysis Model: | ||
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