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Windows
Analysis Report
YDW0S5K7hi.exe
Overview
General Information
Sample name: | YDW0S5K7hi.exerenamed because original name is a hash value |
Original sample name: | 078f2f65179647c8a6af688be140138eae827e1f.exe |
Analysis ID: | 1555421 |
MD5: | fe4ee341b4e7e0d03e27893bd6070a3e |
SHA1: | 078f2f65179647c8a6af688be140138eae827e1f |
SHA256: | fd32b776edd0656ad550b2a4981897515f5f2c793eb3d80da8fcd04f98b12222 |
Tags: | exesilverratuser-NDA0E |
Infos: | |
Detection
SilverRat
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected SilverRat
.NET source code contains potential unpacker
AI detected suspicious sample
Contains functionality to log keystrokes (.Net Source)
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses cmd line tools excessively to alter registry or file data
Uses schtasks.exe or at.exe to add and modify task schedules
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality to call native functions
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE file does not import any functions
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: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Suricata IDS alerts with low severity for network traffic
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
- YDW0S5K7hi.exe (PID: 7600 cmdline:
"C:\Users\ user\Deskt op\YDW0S5K 7hi.exe" MD5: FE4EE341B4E7E0D03E27893BD6070A3E) - attrib.exe (PID: 7808 cmdline:
"C:\Window s\System32 \attrib.ex e" +s +h " C:\Users\u ser\AppDat a\Roaming\ Microsoft\ Windows\Te mplates\co mserver" MD5: 5037D8E6670EF1D89FB6AD435F12A9FD) - conhost.exe (PID: 7816 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - attrib.exe (PID: 7836 cmdline:
"C:\Window s\System32 \attrib.ex e" +s +h " C:\Users\u ser\AppDat a\Roaming\ Microsoft\ Windows\Te mplates\co mserver\$7 7HelpPanel .exe" MD5: 5037D8E6670EF1D89FB6AD435F12A9FD) - conhost.exe (PID: 7860 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cmd.exe (PID: 7924 cmdline:
C:\Windows \system32\ cmd.exe /c ""C:\User s\user\App Data\Local \Temp\tmp9 C90.tmp.ba t"" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7932 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - timeout.exe (PID: 7964 cmdline:
timeout 3 MD5: 100065E21CFBBDE57CBA2838921F84D6) - $77HelpPanel.exe (PID: 7992 cmdline:
"C:\Users\ user\AppDa ta\Roaming \Microsoft \Windows\T emplates\c omserver\$ 77HelpPane l.exe" MD5: FE4EE341B4E7E0D03E27893BD6070A3E) - schtasks.exe (PID: 8092 cmdline:
"schtasks. exe" /quer y /TN $77H elpPanel.e xe MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 8100 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 8140 cmdline:
"schtasks. exe" /Crea te /SC ONC E /TN "$77 HelpPanel. exe" /TR " C:\Users\u ser\AppDat a\Roaming\ Microsoft\ Windows\Te mplates\co mserver\$7 7HelpPanel .exe \"\$7 7HelpPanel .exe\" /As Admin" /ST 00:01 /IT /F /RL HI GHEST MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 8148 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 8188 cmdline:
"schtasks. exe" /quer y /TN $77H elpPanel.e xe MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 6988 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7328 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Set-MpPref erence -Ex clusionExt ension exe ,bat,dll,p s1;exit MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 5088 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WmiPrvSE.exe (PID: 4784 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - schtasks.exe (PID: 7400 cmdline:
"C:\Window s\System32 \schtasks. exe" /crea te /sc dai ly /tn "He lpPanel_Ta sk-DAILY-2 1PM" /TR " %MyFile%" /ST 21:00 MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 6336 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- $77HelpPanel.exe (PID: 2608 cmdline:
C:\Users\u ser\AppDat a\Roaming\ Microsoft\ Windows\Te mplates\co mserver\$7 7HelpPanel .exe "\$77 HelpPanel. exe" /AsAd min MD5: FE4EE341B4E7E0D03E27893BD6070A3E)
- cleanup
{"Mutex": "SilverMutex_RxWYRpnqXs", "Host": "109.120.138.54", "Port": "9999", "Relay Connect": "4", "Version": "1.0.0.0", "Discord Url": "https://discord.com/api/webhooks/1306009594367180840/Zg6W2rH_yPNkl7Hn5Z-GWjtm8W94xN_PzceHo8g5RjjoNr4vkRdq1c70arvb91az-VPT"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security | ||
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security | ||
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security | ||
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security | ||
JoeSecurity_SilverRat | Yara detected SilverRat | Joe Security |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-13T21:11:36.230576+0100 | 2022930 | 1 | A Network Trojan was detected | 172.202.163.200 | 443 | 192.168.2.7 | 49781 | TCP |
2024-11-13T21:12:14.628423+0100 | 2022930 | 1 | A Network Trojan was detected | 172.202.163.200 | 443 | 192.168.2.7 | 49981 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
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Source: | Malware Configuration Extractor: |
Source: | ReversingLabs: |
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Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
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Source: | HTTPS traffic detected: |
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Source: | String found in binary or memory: | ||
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Source: | Network traffic detected: | ||
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Source: | HTTPS traffic detected: |
Key, Mouse, Clipboard, Microphone and Screen Capturing |
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Source: | .Net Code: | ||
Source: | .Net Code: |
Source: | Code function: | 0_2_00007FFAAB402F09 |
Source: | Code function: | 10_2_00007FFAAB417DF2 | |
Source: | Code function: | 10_2_00007FFAAB417046 |
Source: | Static PE information: | ||
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Source: | Task registration methods: | ||
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Source: | Base64 encoded string: |