Analysis Overview
SHA256
5131d0642a54d02c54545e823e706b89be27243608a047c07349fbc30e07dde5
Threat Level: Known bad
The file VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Sets file to hidden
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-05-19 10:45
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-19 10:45
Reported
2024-05-19 10:45
Platform
win10v2004-20240508-en
Max time kernel
17s
Max time network
18s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\permdata\\java.exe" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\permdata\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft Essentials = "C:\\Users\\Admin\\AppData\\Roaming\\MsMpEng.exe" | C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\java = "C:\\permdata\\java.exe" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4984 set thread context of 4552 | N/A | C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe | C:\Users\Admin\AppData\Local\Temp\svchost.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
C:\permdata\java.exe
"C:\permdata\java.exe"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
Files
memory/4984-0-0x0000000074A62000-0x0000000074A63000-memory.dmp
memory/4984-1-0x0000000074A60000-0x0000000075011000-memory.dmp
memory/4984-3-0x0000000074A60000-0x0000000075011000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | e118330b4629b12368d91b9df6488be0 |
| SHA1 | ce90218c7e3b90df2a3409ec253048bb6472c2fd |
| SHA256 | 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9 |
| SHA512 | ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0 |
memory/4552-6-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/4552-9-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/4552-13-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/4552-11-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/4552-18-0x00000000025D0000-0x00000000025D1000-memory.dmp
memory/4552-29-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/4984-31-0x0000000074A60000-0x0000000075011000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
| MD5 | b774ae3fb1da087e1f83b4f7b2060e5a |
| SHA1 | 97eb9be49ac3af9c851c9e1e84e32bfd53e325a8 |
| SHA256 | adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b |
| SHA512 | f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-19 10:45
Reported
2024-05-19 10:45
Platform
win7-20240221-en
Max time kernel
1s
Max time network
1s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\permdata\\java.exe" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\permdata\java.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Essentials = "C:\\Users\\Admin\\AppData\\Roaming\\MsMpEng.exe" | C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\java = "C:\\permdata\\java.exe" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2796 set thread context of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe | C:\Users\Admin\AppData\Local\Temp\svchost.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_f0a5b6bb52a088b9b8ee76b341e58e2b.exe"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
C:\permdata\java.exe
"C:\permdata\java.exe"
C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
Network
Files
memory/2796-0-0x00000000744A1000-0x00000000744A2000-memory.dmp
memory/2796-2-0x00000000744A0000-0x0000000074A4B000-memory.dmp
memory/2796-3-0x00000000744A0000-0x0000000074A4B000-memory.dmp
\Users\Admin\AppData\Local\Temp\svchost.exe
| MD5 | ed797d8dc2c92401985d162e42ffa450 |
| SHA1 | 0f02fc517c7facc4baefde4fe9467fb6488ebabe |
| SHA256 | b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e |
| SHA512 | e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2 |
memory/1944-8-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-25-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-23-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/1944-20-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-18-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-16-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-14-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-13-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-12-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-10-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/1944-26-0x0000000000400000-0x00000000004CB000-memory.dmp
memory/2796-31-0x00000000744A0000-0x0000000074A4B000-memory.dmp
memory/1944-32-0x0000000000400000-0x00000000004CB000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
| MD5 | b774ae3fb1da087e1f83b4f7b2060e5a |
| SHA1 | 97eb9be49ac3af9c851c9e1e84e32bfd53e325a8 |
| SHA256 | adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b |
| SHA512 | f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701 |
memory/1944-52-0x0000000000400000-0x00000000004CB000-memory.dmp