Analysis Overview
SHA256
a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d
Threat Level: Known bad
The file a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d was found to be: Known bad.
Malicious Activity Summary
Darkcomet
UPX dump on OEP (original entry point)
UPX packed file
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-05-18 01:23
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-18 01:23
Reported
2024-05-18 01:26
Platform
win7-20240220-en
Max time kernel
150s
Max time network
121s
Command Line
Signatures
Darkcomet
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\sgMdsJnHrw = "C:\\Users\\Admin\\AppData\\Roaming\\sY50fjAZ\\server.exe.lnk" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2732 set thread context of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe
"C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "sgMdsJnHrw" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\sY50fjAZ\server.exe.lnk"
C:\Windows\SysWOW64\reg.exe
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "sgMdsJnHrw" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\sY50fjAZ\server.exe.lnk"
C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe
"C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
Files
memory/2732-0-0x00000000749E1000-0x00000000749E2000-memory.dmp
memory/2732-1-0x00000000749E0000-0x0000000074F8B000-memory.dmp
memory/2732-2-0x00000000749E0000-0x0000000074F8B000-memory.dmp
memory/2732-3-0x00000000749E0000-0x0000000074F8B000-memory.dmp
memory/2732-4-0x00000000749E0000-0x0000000074F8B000-memory.dmp
\Users\Admin\AppData\Roaming\sY50fjAZ\server.exe
| MD5 | c612ab5b8fd7121be5de86f236165256 |
| SHA1 | 8ae7f79d06378c6ae313905ac81454088a9b7b8f |
| SHA256 | a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d |
| SHA512 | b9bffc385abc999e5d3f1d3d643d4771113deb98b685f92885960a524cf5b652298274038ff441ccec7b29f536ccb17c2da051c54d8c6db569ae0b62c95d1cfe |
memory/2576-19-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-18-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2576-14-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-11-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-12-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-20-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2732-23-0x00000000749E0000-0x0000000074F8B000-memory.dmp
memory/2576-22-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-24-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-27-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-26-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-25-0x0000000000270000-0x0000000000271000-memory.dmp
memory/2576-21-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/2576-28-0x0000000000400000-0x00000000004B7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-18 01:23
Reported
2024-05-18 01:26
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
154s
Command Line
Signatures
Darkcomet
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
UPX packed file
| 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 |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sgMdsJnHrw = "C:\\Users\\Admin\\AppData\\Roaming\\sY50fjAZ\\server.exe.lnk" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1560 set thread context of 3000 | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe
"C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "sgMdsJnHrw" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\sY50fjAZ\server.exe.lnk"
C:\Windows\SysWOW64\reg.exe
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "sgMdsJnHrw" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\sY50fjAZ\server.exe.lnk"
C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe
"C:\Users\Admin\AppData\Local\Temp\a3f36a4527abd8e1bd4dcf0185d76c5b6715cbf7d02ea17c72decf5c4e42e74d.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| BE | 2.17.196.137:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 137.196.17.2.in-addr.arpa | udp |
| BE | 2.17.196.137:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | 79.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
| US | 8.8.8.8:53 | andreibgg.sytes.net | udp |
Files
memory/1560-0-0x0000000075162000-0x0000000075163000-memory.dmp
memory/1560-1-0x0000000075160000-0x0000000075711000-memory.dmp
memory/1560-2-0x0000000075160000-0x0000000075711000-memory.dmp
memory/1560-3-0x0000000075160000-0x0000000075711000-memory.dmp
memory/1560-4-0x0000000075160000-0x0000000075711000-memory.dmp
memory/3000-10-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-11-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-12-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-13-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/1560-15-0x0000000075160000-0x0000000075711000-memory.dmp
memory/3000-17-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-18-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-16-0x0000000001280000-0x0000000001281000-memory.dmp
memory/3000-14-0x0000000000400000-0x00000000004B7000-memory.dmp
memory/3000-19-0x0000000000400000-0x00000000004B7000-memory.dmp