Analysis Overview
SHA256
b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b
Threat Level: Known bad
The file b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b was found to be: Known bad.
Malicious Activity Summary
Darkcomet
UPX packed file
Checks BIOS information in registry
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-23 01:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-23 01:41
Reported
2024-07-23 01:44
Platform
win7-20240708-en
Max time kernel
149s
Max time network
17s
Command Line
Signatures
Darkcomet
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
UPX packed file
| Description | Indicator | Process | Target |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\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 2892 set thread context of 2004 | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | C:\Users\Admin\AppData\Roaming\mcsft.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| 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 |
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\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.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\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.exe
"C:\Users\Admin\AppData\Local\Temp\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\EpSbN.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 | letsgoboom.no-ip.info | udp |
Files
memory/2024-0-0x0000000000400000-0x00000000007C5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\EpSbN.bat
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.exe
| MD5 | 3a013036e8780cdfe62bedee0f45f492 |
| SHA1 | b929242e7c02fee00f5349382ef5eb1afce1478c |
| SHA256 | 23b76a26183a695188f5a992aa9a83c06265660949a64d5334c7ad8cb1e014fb |
| SHA512 | 2a3523c035040cac9a727aa3a9bf7ae3ff4709f6e0b42f748ed2b817cb651394ca432a6ab77b19653c5c9f530e2797335430ef26a23f940a1481d067e8c3a274 |
memory/2004-51-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-50-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-48-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-52-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-54-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-53-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-55-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-58-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-57-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-56-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-59-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-60-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-61-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-62-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-63-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-64-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-65-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-66-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-67-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-68-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-69-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-70-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-71-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-72-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2004-73-0x0000000000400000-0x00000000004B5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-23 01:41
Reported
2024-07-23 01:44
Platform
win10v2004-20240709-en
Max time kernel
150s
Max time network
148s
Command Line
Signatures
Darkcomet
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-1-5-21-47134698-4092160662-1261813102-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.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 |
UPX packed file
| Description | Indicator | Process | Target |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-47134698-4092160662-1261813102-1000\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 4536 set thread context of 3916 | N/A | C:\Users\Admin\AppData\Roaming\mcsft.exe | C:\Users\Admin\AppData\Roaming\mcsft.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Users\Admin\AppData\Roaming\mcsft.exe | N/A |
| 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 |
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\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.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\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.exe
"C:\Users\Admin\AppData\Local\Temp\b2033ef6c4b6f6b580c24092bd483c80caae2d6efb658318a596db082d81427b.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\pored.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 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
| US | 8.8.8.8:53 | letsgoboom.no-ip.info | udp |
Files
memory/4916-0-0x0000000000400000-0x00000000007C5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\pored.txt
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.txt
| MD5 | cd8cba2a8090011010c7be6de55a1f69 |
| SHA1 | c85b0a2a253949cfef78e1bd62c6eb1538335990 |
| SHA256 | daa10f2edddedf6f98950831dde48f87f6dbdcee17266936eebb104dad735c0c |
| SHA512 | 875806fed0e4203941e3b0edf380b3edfadeb2452367d8d6747975110607769df3e6553e70c7a1c3291763b72585a811c9c6bf4e57880fd0142611db1692499f |
memory/3916-33-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-31-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-34-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-35-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-36-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-40-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-39-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-38-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-37-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-41-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-42-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-43-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-44-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-45-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-46-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-47-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-48-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-49-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-50-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-51-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-52-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-53-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-54-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3916-55-0x0000000000400000-0x00000000004B5000-memory.dmp