Analysis Overview
SHA256
f2a22a1b44253073cda975e57ee937304a434538f4df0942a65b25889f0fa24b
Threat Level: Known bad
The file SeroXen.zip was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar family
Quasar payload
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Themida packer
Checks BIOS information in registry
Executes dropped EXE
Loads dropped DLL
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Windows directory
Unsigned PE
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-15 08:02
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral3
Detonation Overview
Submitted
2024-06-15 08:01
Reported
2024-06-15 08:36
Platform
win10v2004-20240611-en
Max time kernel
1387s
Max time network
1177s
Command Line
Signatures
Processes
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\SeroXen.zip
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 129.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.15.31.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.73.42.20.in-addr.arpa | udp |
Files
Analysis: behavioral4
Detonation Overview
Submitted
2024-06-15 08:01
Reported
2024-06-15 08:36
Platform
win11-20240508-en
Max time kernel
1739s
Max time network
1751s
Command Line
Signatures
Processes
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\SeroXen.zip
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-15 08:01
Reported
2024-06-15 08:32
Platform
win10-20240611-en
Max time kernel
477s
Max time network
1611s
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 |
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Themida packer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\rescache\_merged\1847152663\4105898438.pri | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1453213197-474736321-1741884505-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance | C:\Program Files\7-Zip\7zFM.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: 35 | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| N/A | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\New folder\SeroXen.exe | N/A |
Processes
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\SeroXen.zip
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\SeroXen.zip"
C:\Users\Admin\Desktop\New folder\SeroXen.exe
"C:\Users\Admin\Desktop\New folder\SeroXen.exe"
Network
| Country | Destination | Domain | Proto |
| US | 199.232.210.172:80 | tcp | |
| US | 199.232.210.172:80 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | auth.patched.to | udp |
| US | 104.26.15.16:443 | auth.patched.to | tcp |
| US | 8.8.8.8:53 | 16.15.26.104.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db
| MD5 | ac4b20a781fe9996d0e4d62043f8c63b |
| SHA1 | 844a5b02f46fc207c6e35e9724ed5b24470b029a |
| SHA256 | e88b5a6405f9b5abfb83f5bb2538ec4146b345c46a0f119490fcb6267dc3f14d |
| SHA512 | d85efb126ae2d1498e6812b09bcbd79cb168292930c95f023f3f05a3347325e81d567e3b00f0c01e2a91b0a0a5adbf5d340d049324c5bc764d2542d65943f0b2 |
C:\Users\Admin\Desktop\New folder\SeroXen.exe
| MD5 | 89a7d73bad622bbd0b9dfb8e80f8c42e |
| SHA1 | f1ac96f1d956254c6b2209f457355da89c987d8f |
| SHA256 | 7cb37cd110a388998ce95819da915446331f614a5da8d5cfeed953812ada23f1 |
| SHA512 | 760e8e7087ac107ec9e12caaa26968142ddd62ddd82d0e6abfcaa35de8f03917323e97147e72b63fb3dca27756726f4f8fa68f89f9e5acc70898c4c4b0a7bdd0 |
memory/5096-76-0x000001D32CBD0000-0x000001D32F264000-memory.dmp
C:\Users\Admin\Desktop\New folder\Renci.SshNet.dll
| MD5 | 38cd4058d861c08800a2a52ab41f929d |
| SHA1 | 9f5f747f2bd6bcb75ff2935833c617718fbe39cb |
| SHA256 | 57e8f49f8347c5e9444c138846a85868c52829b8ee99f0bde905e4fb3127339f |
| SHA512 | 3e0761550179952e60263ecbe803f0fd3ed32c03712e36e4f6cde53d1a039869bb210d04c1c1bda235226d362dc93d290e7f42291822b5daea4247070a891435 |
memory/5096-78-0x000001D349960000-0x000001D349A2A000-memory.dmp
\Users\Admin\AppData\Local\Temp\e598627d-8851-4529-8c98-58e978071e98\C5VM64.dll
| MD5 | e3bd88b3c3e9b33dfa72c814f8826cff |
| SHA1 | 6d220c9eb7ee695f2b9dec261941bed59cac15e4 |
| SHA256 | 28e9458a43e5d86a341590eaa83d0da18c29fce81f2383d84bda484e049a1796 |
| SHA512 | fcb7e384b5bda0f810c4b6190a991bd066eedfc8fc97af9837cda1ba480385c8bc09bd703c1029f9d8d8a3eea3dbc03af97b014b4713a4ceea6ad6ae85b3b6e9 |
memory/5096-85-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
memory/5096-86-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
memory/5096-87-0x00007FF861470000-0x00007FF86159C000-memory.dmp
C:\Users\Admin\Desktop\New folder\C5VM.dll
| MD5 | 37691c7533a9327f520ebe21faa72191 |
| SHA1 | 328ba7fe8627883bc3e31b7bf1cd317b442a4c08 |
| SHA256 | de6f08708b8bc6562828c7787769d14752b2c1ab0b0e9b34b1ed44987bd2f842 |
| SHA512 | b6334eba7103a986d4e2c12b38f34d084ce8d6b986ccb9775ec5d623b988546ce97308ddeb0239a5ec25e9d5782a27c777af7f89e757fdd35047723c4a0afdb4 |
memory/5096-93-0x000001D330F80000-0x000001D330FAC000-memory.dmp
\Users\Admin\Desktop\New folder\SeroXenPTO.bin
| MD5 | 839acc7894ecd3b706277a7c754d1ab3 |
| SHA1 | 03ceb5f2f82b4e2f6a1b41da9300564d78e0b13d |
| SHA256 | a601e5352480503c69e2baa53c589a40881051965b4220bed1c17a5b36735b35 |
| SHA512 | 46a713c005b2acc8db03023c63073603fc4a10e578429fe3783279e739b57942892ef5332e8ecf72e7157c50ee02ab1f10a3e681399e72b83714730f945314fd |
memory/5096-94-0x000001D330FB0000-0x000001D330FD2000-memory.dmp
memory/5096-89-0x000001D349ED0000-0x000001D349FE4000-memory.dmp
\Users\Admin\Desktop\New folder\PTOAuth.dll
| MD5 | ced7e9cdea3c1dceedab64214c6dcb83 |
| SHA1 | 73da7147478f83db810de4680e1e4fad13281a93 |
| SHA256 | 4287556856619243ab4546046cea447e2481b2e7a1e7a26855f28d49918bfd87 |
| SHA512 | dee3a60236f044b7bee7baa384db5b9ecaa291d83583fa40cbac561e1419a481901a728d632653c150d5588ed29336fd64473e5ec5dbf11e7ca294c8dd278faf |
memory/5096-97-0x00007FF85B430000-0x00007FF85B922000-memory.dmp
memory/5096-103-0x000001D34B880000-0x000001D34B921000-memory.dmp
memory/5096-104-0x000001D34B930000-0x000001D34B9A1000-memory.dmp
memory/5096-102-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
memory/5096-114-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
memory/5096-123-0x000001D34BDF0000-0x000001D34BE61000-memory.dmp
memory/5096-122-0x000001D34B900000-0x000001D34B9A1000-memory.dmp
memory/5096-121-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
memory/5096-125-0x00007FF85B930000-0x00007FF85C18F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-15 08:01
Reported
2024-06-15 08:36
Platform
win7-20240221-en
Max time kernel
1565s
Max time network
1568s
Command Line
Signatures
Processes
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\SeroXen.zip