Edit tour
Windows
Analysis Report
sysadmin.exe
Overview
General Information
Detection
Vidar
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Attempt to bypass Chrome Application-Bound Encryption
Found malware configuration
Malicious sample detected (through community Yara rule)
Suricata IDS alerts for network traffic
Yara detected Vidar stealer
AI detected suspicious sample
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Potentially Suspicious Malware Callback Communication
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Compiles C# or VB.Net code
Contains functionality to query locales information (e.g. system language)
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
Found dropped PE file which has not been started or loaded
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
Queries information about the installed CPU (vendor, model number etc)
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: Browser Started with Remote Debugging
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- sysadmin.exe (PID: 7260 cmdline:
"C:\Users\ user\Deskt op\sysadmi n.exe" MD5: E5F9640FB525C58FEC8901B16F41C9A5) - csc.exe (PID: 7300 cmdline:
"C:\Window s\Microsof t.NET\Fram ework64\v4 .0.30319\c sc.exe" /n oconfig /f ullpaths @ "C:\Users\ user\AppDa ta\Local\T emp\jhtixt pk\jhtixtp k.cmdline" MD5: F65B029562077B648A6A5F6A1AA76A66) - conhost.exe (PID: 7308 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - cvtres.exe (PID: 7364 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cv tres.exe / NOLOGO /RE ADONLY /MA CHINE:IX86 "/OUT:C:\ Users\user \AppData\L ocal\Temp\ RES8D13.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\jht ixtpk\CSCC DB7263B207 A4F1CADFD2 FC19D91DBC .TMP" MD5: C877CBB966EA5939AA2A17B6A5160950) - RegAsm.exe (PID: 7412 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) - chrome.exe (PID: 7532 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --re mote-debug ging-port= 9223 --pro file-direc tory="Defa ult" MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - chrome.exe (PID: 7828 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\Applicat ion\chrome .exe" --ty pe=utility --utility -sub-type= network.mo jom.Networ kService - -lang=en-U S --servic e-sandbox- type=none --mojo-pla tform-chan nel-handle =2564 --fi eld-trial- handle=228 0,i,234186 8853609439 944,236191 8596472421 75,262144 /prefetch: 8 MD5: 45DE480806D1B5D462A7DDE4DCEFC4E4) - cmd.exe (PID: 5804 cmdline:
"C:\Window s\system32 \cmd.exe" /c timeout /t 10 & r d /s /q "C :\ProgramD ata\3wtj5" & exit MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 2844 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - timeout.exe (PID: 6064 cmdline:
timeout /t 10 MD5: 976566BEEFCCA4A159ECBDB2D4B1A3E3)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Vidar | Vidar is a forked malware based on Arkei. It seems this stealer is one of the first that is grabbing information on 2FA Software and Tor Browser. | No Attribution |
{"C2 url": "https://steamcommunity.com/profiles/76561199816275252", "Botnet": "js4tn"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Vidar_1 | Yara detected Vidar stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
infostealer_win_vidar_strings_nov23 | Finds Vidar samples based on the specific strings | Sekoia.io |
| |
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
infostealer_win_vidar_strings_nov23 | Finds Vidar samples based on the specific strings | Sekoia.io |
| |
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: pH-T (Nextron Systems), Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems), X__Junior (Nextron Systems): |
Source: | Author: frack113: |
Data Obfuscation |
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Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-13T20:18:13.977147+0100 | 2044247 | 1 | Malware Command and Control Activity Detected | 116.203.166.124 | 443 | 192.168.2.4 | 49735 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-13T20:18:15.337689+0100 | 2051831 | 1 | Malware Command and Control Activity Detected | 116.203.166.124 | 443 | 192.168.2.4 | 49736 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-13T20:18:12.636616+0100 | 2049087 | 1 | A Network Trojan was detected | 192.168.2.4 | 49734 | 116.203.166.124 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-13T20:18:11.292842+0100 | 2859378 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49733 | 116.203.166.124 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Malware Configuration Extractor: |
Source: | Integrated Neural Analysis Model: |
Source: | Code function: | 4_2_0040C009 |
Source: | HTTPS traffic detected: | ||
Source: | HTTPS traffic detected: |
Source: | Static PE information: |
Source: | Binary string: | ||
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Source: | Code function: | 4_2_0041008C | |
Source: | Code function: | 4_2_00428248 | |
Source: | Code function: | 4_2_0042A4E5 | |
Source: | Code function: | 4_2_0040E749 | |
Source: | Code function: | 4_2_0040177C | |
Source: | Code function: | 4_2_00412AC9 | |
Source: | Code function: | 4_2_0040CCEA | |
Source: | Code function: | 4_2_0042BD1E | |
Source: | Code function: | 4_2_004018DA |
Source: | Code function: | 4_2_00428DDA |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior |
Source: | Memory has grown: |
Networking |
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Source: | Suricata IDS: | ||
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Source: | JA3 fingerprint: |
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
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Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: |
Source: | Code function: | 4_2_0040A09E |
Source: | HTTP traffic detected: | ||
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Source: | String found in binary or memory: |