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Windows
Analysis Report
download.ps1
Overview
General Information
| Sample name: | download.ps1 |
| Analysis ID: | 1571745 |
| MD5: | 0188ae5e15c1edc64ab1ae6ca5b6e72f |
| SHA1: | 29f44de502cc3c08d6cef1c020ad9e7ef3f953bc |
| SHA256: | 8215c16d5462d70b3c146a74a6ac6bf38b434691bd27d5c46754ace5fd2b4964 |
| Tags: | KongTukeps1user-monitorsg |
| Infos: |  |
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Detection
| Score: | 64 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Binary contains a suspicious time stamp
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
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 potential string decryption / allocating functions
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 BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, 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: 7552 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: 7560 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
check.exe (PID: 7992 cmdline: "C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) - check.exe (PID: 8060 cmdline:
"C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) 
systeminfo.exe (PID: 8136 cmdline: systeminfo MD5: EE309A9C61511E907D87B10EF226FDCD) - conhost.exe (PID: 8148 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 6524 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 6920 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
WMIC.exe (PID: 3800 cmdline: wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) 
WerFault.exe (PID: 7284 cmdline: C:\Windows \system32\ WerFault.e xe -u -p 8 060 -s 892 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- check.exe (PID: 8076 cmdline:
"C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) - check.exe (PID: 5112 cmdline:
"C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) - systeminfo.exe (PID: 2848 cmdline:
systeminfo MD5: EE309A9C61511E907D87B10EF226FDCD) - conhost.exe (PID: 7744 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 1848 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 3256 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 1928 cmdline:
wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - WerFault.exe (PID: 4260 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 5 112 -s 956 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- check.exe (PID: 4460 cmdline:
"C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) - check.exe (PID: 7608 cmdline:
"C:\Users\ user\AppDa ta\Roaming \HseeHuht\ check.exe" MD5: F17797CAAB0F1CB8D5813853AAD786CA) - systeminfo.exe (PID: 4376 cmdline:
systeminfo MD5: EE309A9C61511E907D87B10EF226FDCD) - conhost.exe (PID: 3968 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 5192 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic com putersyste m get manu facturer" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 6068 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 4212 cmdline:
wmic compu tersystem get manufa cturer MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - WerFault.exe (PID: 4656 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 7 608 -s 928 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
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