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Windows
Analysis Report
RFQ.exe
Overview
General Information
Detection
Quasar, PureLog Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Quasar
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected PureLog Stealer
Yara detected Quasar RAT
AI detected suspicious sample
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
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 non-DNS traffic on DNS port
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)
Found inlined nop instructions (likely shell or obfuscated code)
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 check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, 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)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Uses 32bit PE files
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- RFQ.exe (PID: 6556 cmdline:
"C:\Users\ user\Deskt op\RFQ.exe " MD5: DF29EE043D88F265CD76747F62AB3EA7) - powershell.exe (PID: 1012 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\Des ktop\RFQ.e xe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 1448 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 5968 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\OLHTuSL w.exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 2908 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 5244 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\OLHT uSLw" /XML "C:\Users \user\AppD ata\Local\ Temp\tmp30 71.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 2496 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - RFQ.exe (PID: 7232 cmdline:
"C:\Users\ user\Deskt op\RFQ.exe " MD5: DF29EE043D88F265CD76747F62AB3EA7) - RFQ.exe (PID: 7244 cmdline:
"C:\Users\ user\Deskt op\RFQ.exe " MD5: DF29EE043D88F265CD76747F62AB3EA7) - schtasks.exe (PID: 7340 cmdline:
"schtasks" /create / tn "Quasar Client St artup" /sc ONLOGON / tr "C:\Use rs\user\Ap pData\Roam ing\SubDir \Client.ex e" /rl HIG HEST /f MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7372 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - Client.exe (PID: 7452 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" MD5: DF29EE043D88F265CD76747F62AB3EA7) - powershell.exe (PID: 7592 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\SubDir\ Client.exe " MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 7608 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7624 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\OLHTuSL w.exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 7660 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 7668 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\OLHT uSLw" /XML "C:\Users \user\AppD ata\Local\ Temp\tmp46 5A.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7716 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - Client.exe (PID: 7880 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" MD5: DF29EE043D88F265CD76747F62AB3EA7) - schtasks.exe (PID: 7932 cmdline:
"schtasks" /create / tn "Quasar Client St artup" /sc ONLOGON / tr "C:\Use rs\user\Ap pData\Roam ing\SubDir \Client.ex e" /rl HIG HEST /f MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7960 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- OLHTuSLw.exe (PID: 7356 cmdline:
C:\Users\u ser\AppDat a\Roaming\ OLHTuSLw.e xe MD5: DF29EE043D88F265CD76747F62AB3EA7) - schtasks.exe (PID: 6464 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\OLHT uSLw" /XML "C:\Users \user\AppD ata\Local\ Temp\tmp63 B6.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7328 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - OLHTuSLw.exe (PID: 7516 cmdline:
"C:\Users\ user\AppDa ta\Roaming \OLHTuSLw. exe" MD5: DF29EE043D88F265CD76747F62AB3EA7) - OLHTuSLw.exe (PID: 1904 cmdline:
"C:\Users\ user\AppDa ta\Roaming \OLHTuSLw. exe" MD5: DF29EE043D88F265CD76747F62AB3EA7) - OLHTuSLw.exe (PID: 5416 cmdline:
"C:\Users\ user\AppDa ta\Roaming \OLHTuSLw. exe" MD5: DF29EE043D88F265CD76747F62AB3EA7)
- Client.exe (PID: 7552 cmdline:
C:\Users\u ser\AppDat a\Roaming\ SubDir\Cli ent.exe MD5: DF29EE043D88F265CD76747F62AB3EA7) - powershell.exe (PID: 6656 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\SubDir\ Client.exe " MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 6676 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7444 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\OLHTuSL w.exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 7372 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 1260 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\OLHT uSLw" /XML "C:\Users \user\AppD ata\Local\ Temp\tmp64 CF.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 4476 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - Client.exe (PID: 1772 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" MD5: DF29EE043D88F265CD76747F62AB3EA7) - Client.exe (PID: 1012 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" MD5: DF29EE043D88F265CD76747F62AB3EA7)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Quasar RAT, QuasarRAT | Quasar RAT is a malware family written in .NET which is used by a variety of attackers. The malware is fully functional and open source, and is often packed to make analysis of the source more difficult. |
{"Version": "1.4.1", "Host:Port": "toolsbox.ydns.eu:20901;", "SubDirectory": "SubDir", "InstallName": "Client.exe", "MutexName": "33714128-68e4-4509-bd32-b7e414783d3eDtWike", "StartupKey": "Quasar Client Startup", "Tag": "gasplant", "LogDirectoryName": "Logs", "ServerSignature": "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", "ServerCertificate": "MIIE9DCCAtygAwIBAgIQAINI5zCA1eKMBIzVGHFGqTANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDEwMzE1MTE1NVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnzXS+Xn0nqcul8x0v9zbjhWKxGw5U6+QqI4uiyuiRvN1s+2yrjcCjuS0ag5crR+KPuaFKWK9ZsS5fEw4SpJwPEt91jZ+m5XG17tmGCFPjOsrQWSEvJsk7aIUpHEBNW7Hr3X0lX78dAFqpV+pRBEfgYnap/q34AZ3+DpFig0uWJapMlh1ILjyl5BcTPjzIWc4iuSsrGu7UFVZ346UbHC2reYut2Zqp9tGj3Nd3zudAOTel7EP97Gc+XWptNFDYsb+vGGq5fVqRdrDcfo+o7W9kQITN4xaWjVOBxEcW5x1P9uM8OpPzT9hsgMsHBgla8CGn+9AWXfdiqTWDFGFnbnIF6AwTnXNs+obmTw6KeVUrZIbL11+KuVy3fl7o5Rss9buwwqA2QajWRdka4RYo1101EVVPvJ6jeX+WeK07SNA7yYMblOjuy6xyHXX7R327MZjCwy+GAyL0yq0s7kifc7bd1GbCYrlMtYmz6ECdN/pK0auTNxuJumb1bUW5/LHlU0ZcJJInuJnKUrJ5fcaq3SKd94ATX8zcJ/dKqr+fuMyCwPwRe26jQpXBnl2JSHi6UqMIdn2tFREN6LpEuDHtUXcoegGRRGD/WLm6/5tD1JqPKMQbgiACQZe2IK0bd4F6i9NmmpduFg4e3N7yyvStTnexsZE1Ufsp08XvqBHav0XHI0CAwEAAaMyMDAwHQYDVR0OBBYEFCkhbM2ucinuZphETS2w98oceVYbMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQENBQADggIBADW9nKRkTx6hF9YV27VL1z2886aEGJSb/Sxgbi6YJquotn1ma+9lZvYspdAVzxvykpfxanwww9bSTNya8+Cj+d8SejxSIKlOW9kWq6pHTDAnZjEXK+zopRmKmGlM6A8vD+zEg7M6ty0eCD0lymSd7ambLS12cJ5Mu+5Es1hZGIWOwIrSD1OtEw5l0vyW4YBQHVVo6SO+BRYB7uP7LsZPzkIU+FEmkgd+ioV4coJMK4+wr67MxftPIQaxv/JM7vQLtuz+oOyyL343/UhI2rAjTZNIuzdAr42zRe0H3wUrUwHINZvjEhV7DOYvgdK8AH6YV+FnUhTZRf+XLnXQhsECXttDYBDCWYAOQEk1fmBu4k6kpVLeT6hYr0MbOtWB2W+w1oE7teCsQnPICMwlx7L10ll6MLdzLgq+rOUD8B5vBUPZ6h1iKyR4KL3rb8fIUDxV4kG4akGi42k/eaSIHsV00cw55i54Etm9RnAI5gPSiRj5jC3iP6CZbF+RUiNpUVmOpBrHfnX/OWUjGoVdm/9X2W+UYeFsAoQh38QBUOXI4SBWSVM/nztDvSYcDnJcFBT6/Y+t+6so+qfYZ0OUA5tuuo5CsTcZXw3VFwqES21qbTeR3Wy3y29hrKovjZGIQ7HyRRDT/Seog+HHJ5SO0osiSJbSCRsPfBV3SPcIlNZqiCn9"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
Click to see the 42 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
Click to see the 36 entries |
AV Detection |
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Source: | Author: Joe Security: |
E-Banking Fraud |
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Source: | Author: Joe Security: |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |
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): |
Persistence and Installation Behavior |
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Source: | Author: Joe Security: |
Stealing of Sensitive Information |
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Source: | Author: Joe Security: |
Remote Access Functionality |
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Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-14T08:37:12.797299+0100 | 2035595 | 1 | Domain Observed Used for C2 Detected | 185.222.57.67 | 20901 | 192.168.2.4 | 49735 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-14T08:37:12.797299+0100 | 2027619 | 1 | Domain Observed Used for C2 Detected | 185.222.57.67 | 20901 | 192.168.2.4 | 49735 | TCP |
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Show All Signature Results
AV Detection |
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Source: | Avira URL Cloud: |
Source: | Malware Configuration Extractor: |