Analysis Overview
SHA256
03e15b7644a4692524bd1e5e41cb22921a5bec52191d390160b0d6de61940cdd
Threat Level: Known bad
The file efae2dc9c812edcd76426579e516c7d3_JaffaCakes118 was found to be: Known bad.
Malicious Activity Summary
Darkcomet
Checks computer location settings
UPX packed file
Executes dropped EXE
Checks BIOS information in registry
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Checks processor information in registry
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-14 22:41
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
2024-04-14 22:41
Reported
2024-04-14 22:43
Platform
win7-20240319-en
Max time kernel
145s
Max time network
150s
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 |
| 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-1-5-21-2610426812-2871295383-373749122-1000\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 2684 set thread context of 2808 | 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\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 |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | 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\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.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\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\ksUtr.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 |
| US | 8.8.8.8:53 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
Files
memory/2516-0-0x0000000000400000-0x00000000007C9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ksUtr.bat
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.exe
| MD5 | 894032fa981350555267f83d9e3bf471 |
| SHA1 | a72eae9c964de7d553b16cadaa2cccc7a1292a02 |
| SHA256 | dfa03ea5f47da608468fed069c0707164a2b70ab25fbad145619285ad843bf7e |
| SHA512 | 0ead4da305bef168f4e8ff09e8de421545958f5ee835f30a64c17a9170e2863f6e2b895a2905fbf82f05ccbc2a2e0f04e70be7eb6e9b604d5af004d5431f4b3e |
memory/2516-42-0x0000000003000000-0x00000000033C9000-memory.dmp
memory/2516-43-0x0000000003000000-0x00000000033C9000-memory.dmp
memory/2516-45-0x0000000003000000-0x00000000033C9000-memory.dmp
memory/2516-46-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2684-48-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2684-52-0x0000000002AD0000-0x0000000002E99000-memory.dmp
memory/2808-53-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-57-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2684-56-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/2808-58-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-60-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-61-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2808-62-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-63-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-65-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-64-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-66-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-68-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2808-69-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-71-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-73-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-75-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-78-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/2808-80-0x0000000000400000-0x00000000004B5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-14 22:41
Reported
2024-04-14 22:43
Platform
win10v2004-20240412-en
Max time kernel
146s
Max time network
152s
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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.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-1-5-21-1826666146-2574340311-1877551059-1000\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 3532 set thread context of 4016 | 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 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\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.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\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\efae2dc9c812edcd76426579e516c7d3_JaffaCakes118.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\dBPqZ.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 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.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 |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.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 | 11.227.111.52.in-addr.arpa | 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 | ygo.no-ip.info | udp |
| ES | 94.73.33.36:1604 | ygo.no-ip.info | tcp |
| US | 8.8.8.8:53 | 15.173.189.20.in-addr.arpa | udp |
Files
memory/3552-0-0x0000000000400000-0x00000000007C9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\dBPqZ.txt
| MD5 | a5feca573884d76f559b996d45e8ad9a |
| SHA1 | 0e81a993f3af4e31d60653dc2513186f0495f1c8 |
| SHA256 | c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f |
| SHA512 | a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda |
C:\Users\Admin\AppData\Roaming\mcsft.txt
| MD5 | 1bb341e66a119c572c8e5ea24b2e5063 |
| SHA1 | 29c93632c1d0fc753f34b82bcb8cb58ef3574228 |
| SHA256 | 83c2a7e78fa7fa9fe1e17e4c6a46da423401f9e67f600a3ddf5d4bd8f3ec7699 |
| SHA512 | 1efc71079ef8150271cd6a3cf3ed60c68074da2a1de923e77ac112ade22378a1757f1c6c57d8563f5f8e43ca3cbd877f6d74a45473b22d42d9310d7309e7ff9d |
memory/3552-29-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/4016-31-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-34-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-35-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/3532-36-0x0000000000400000-0x00000000007C9000-memory.dmp
memory/4016-37-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-38-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-39-0x00000000007C0000-0x00000000007C1000-memory.dmp
memory/4016-40-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-42-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-41-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-43-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-45-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-47-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-49-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-51-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-53-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4016-55-0x0000000000400000-0x00000000004B5000-memory.dmp