Analysis Overview
SHA256
5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99
Threat Level: Known bad
The file 5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Darkcomet family
Checks computer location settings
Loads dropped DLL
Checks BIOS information in registry
Executes dropped EXE
Adds Run key to start application
Suspicious use of SetThreadContext
UPX packed file
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Enumerates system info in registry
Checks processor information in registry
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-30 17:48
Signatures
UPX packed file
| 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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-30 17:48
Reported
2024-12-30 17:50
Platform
win7-20241010-en
Max time kernel
112s
Max time network
114s
Command Line
Signatures
Darkcomet
Darkcomet family
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Loads dropped DLL
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2484 set thread context of 2852 | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | C:\Users\Admin\AppData\Roaming\mcsft.exe |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\reg.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Roaming\mcsft.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\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe
"C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\HfBuw.bat" "
C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
C:\Users\Admin\AppData\Roaming\mcsft.exe
"C:\Users\Admin\AppData\Roaming\mcsft.exe"
C:\Users\Admin\AppData\Roaming\mcsft.exe
C:\Users\Admin\AppData\Roaming\mcsft.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
Files
memory/1740-0-0x0000000000400000-0x00000000007C8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\HfBuw.bat
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.exe
| MD5 | f0f1fcf59193219a7594888080512109 |
| SHA1 | 51b7587914aba8d772af549439d9e02d2d37c9ce |
| SHA256 | 67509ad290bd74e5851ddefdf35e62d8f6a4f6c08baa46f709d636d49b342f2a |
| SHA512 | b3cfc73ce25f9246edae71169b9371f19f5a9996767fe8976d294746e3ba22a76aabf42518ca7fa2b3a58750cba4afd74a451825707d5a59ee5eed031662f856 |
memory/1740-45-0x00000000039D0000-0x0000000003D98000-memory.dmp
memory/1740-44-0x00000000039D0000-0x0000000003D98000-memory.dmp
memory/1740-43-0x00000000039D0000-0x0000000003D98000-memory.dmp
memory/1740-42-0x00000000039D0000-0x0000000003D98000-memory.dmp
memory/2484-47-0x0000000000400000-0x00000000007C8000-memory.dmp
memory/1740-49-0x0000000000400000-0x00000000007C8000-memory.dmp
memory/2852-54-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-56-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-57-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2484-59-0x0000000000400000-0x00000000007C8000-memory.dmp
memory/2852-60-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-62-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-63-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-61-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-66-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-65-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-64-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-67-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-70-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-72-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-74-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-76-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2852-78-0x0000000000400000-0x00000000004B5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-30 17:48
Reported
2024-12-30 17:50
Platform
win10v2004-20241007-en
Max time kernel
111s
Max time network
118s
Command Line
Signatures
Darkcomet
Darkcomet family
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4944 set thread context of 4824 | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | C:\Users\Admin\AppData\Roaming\mcsft.exe |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\reg.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier | C:\Users\Admin\AppData\Roaming\mcsft.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\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe
"C:\Users\Admin\AppData\Local\Temp\5a153fbd6e42b3c15c4a52b9ba1bf688ade2148921d10a08314b17173dbdbb99.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VBPKJ.bat" "
C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
C:\Users\Admin\AppData\Roaming\mcsft.exe
"C:\Users\Admin\AppData\Roaming\mcsft.exe"
C:\Users\Admin\AppData\Roaming\mcsft.exe
C:\Users\Admin\AppData\Roaming\mcsft.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 86.49.80.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
Files
memory/4488-0-0x0000000000400000-0x00000000007C8000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\VBPKJ.txt
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.txt
| MD5 | c834c78bc3be3bb03c282c550cfcd7fc |
| SHA1 | 81d6bb92026aae6d6288038a809a5bde174f85b7 |
| SHA256 | 6bbf69fd263e6cbdfbd84d054e6bb9c178cb0232a19390145bb1dfff79c8a185 |
| SHA512 | 656dfac5dce560852298b0e1da5869a7e75f198d5f0aabb219f8a592cb32f0f3ca3e090a867836a6133e0caa1fd1e072e573279ee9bc7531017b6ae9b6499bc7 |
memory/4488-29-0x0000000000400000-0x00000000007C8000-memory.dmp
memory/4824-32-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-34-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-35-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4944-37-0x0000000000400000-0x00000000007C8000-memory.dmp
memory/4824-39-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-38-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-43-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-42-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-41-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-40-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-44-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-45-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-48-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-50-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-52-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-54-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4824-56-0x0000000000400000-0x00000000004B5000-memory.dmp