Analysis Overview
SHA256
8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f
Threat Level: Known bad
The file 8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f was found to be: Known bad.
Malicious Activity Summary
Detects executables packed with ASPack
Detects executables packed with ASPack
Loads dropped DLL
Executes dropped EXE
Modifies system executable filetype association
Enumerates connected drives
Adds Run key to start application
Drops file in Windows directory
Drops file in Program Files directory
Unsigned PE
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 23:13
Signatures
Detects executables packed with ASPack
| 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
2024-04-07 23:13
Reported
2024-04-07 23:16
Platform
win7-20240221-en
Max time kernel
120s
Max time network
123s
Command Line
Signatures
Detects executables packed with ASPack
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\$Recycle.Bin\TEY.EXE | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Users\\HEYYXX.EXE \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HEYYXX.EXE = "C:\\Users\\HEYYXX.EXE" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
Enumerates connected drives
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\KESZT.EXE | C:\$Recycle.Bin\TEY.EXE | N/A |
| File created | C:\Program Files (x86)\WIBSW.EXE | C:\$Recycle.Bin\TEY.EXE | N/A |
| File created | C:\Program Files (x86)\OYGBX.EXE | C:\$Recycle.Bin\TEY.EXE | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\WKJLGSD.EXE | C:\$Recycle.Bin\TEY.EXE | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\Users\\HEYYXX.EXE \"%1\"" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\Users\\HEYYXX.EXE \"%1\"" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file | C:\$Recycle.Bin\TEY.EXE | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Users\\HEYYXX.EXE \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\PerfLogs\\ASUO.EXE %1" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\Users\\HEYYXX.EXE %1" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile | C:\$Recycle.Bin\TEY.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell | C:\$Recycle.Bin\TEY.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1048 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\$Recycle.Bin\TEY.EXE |
| PID 1048 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\$Recycle.Bin\TEY.EXE |
| PID 1048 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\$Recycle.Bin\TEY.EXE |
| PID 1048 wrote to memory of 2544 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\$Recycle.Bin\TEY.EXE |
Processes
C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe
"C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe"
C:\$Recycle.Bin\TEY.EXE
C:\$Recycle.Bin\TEY.EXE
Network
Files
memory/1048-0-0x0000000000220000-0x0000000000221000-memory.dmp
C:\Users\HEYYXX.EXE
| MD5 | e51d14fc99c07a4377a6a841b06de296 |
| SHA1 | 79625116be7735a734b8885a0d71782fb0a3af6d |
| SHA256 | 7ed8825e615e10da7a73f84478d1d914af6a4ffe0754c839ba5230b6f1e07b9e |
| SHA512 | 9dbaff5c74f5f0e4367415c1f4cc412e8c0979ee44de5d7f8cefa139377d5405d2c4cdafe5ba074114301c3c025bb1eb963635e956dd58a02b67fbfd3a86be9b |
C:\filedebug
| MD5 | f0085afcb64a71f5b04c37f87b5259b7 |
| SHA1 | 3d6ae628935231143a1b7806c2c69a0c8b0b8e8a |
| SHA256 | 4d9c8497e08691d335ee440006094e0cfcbb788bcdee05626b7b0d2c3993c6f3 |
| SHA512 | 81d96933ce034bd33c4a98236a088242e7a32f4db1669f9b11e670fcf981285435432373a38a51ab38ec14c6245869d40e6efb2d275b584aa6631f11f5e6fadc |
C:\$Recycle.Bin\TEY.EXE
| MD5 | bbf9e18933efab68d10d561e36367fee |
| SHA1 | 18ce11988ee1e26f94fcaa24143f625c0dbd657c |
| SHA256 | 44ea44ba7eef516720a9cdcbac4ffec3f0be9693747bd33900a8a6a3c565d0d2 |
| SHA512 | aa53f26958ee90777505e48d3992823fcadb15c731864bdced01871474f3d89495f56284496bbe3b3bd1a02a6d5d37cb43562cfd18705c47d749b3d6d65b0ad9 |
memory/2544-26-0x0000000000220000-0x0000000000221000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 23:13
Reported
2024-04-07 23:16
Platform
win10v2004-20240226-en
Max time kernel
140s
Max time network
106s
Command Line
Signatures
Detects executables packed with ASPack
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\ULXZCJL.EXE | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\PerfLogs\\GOYZ.EXE \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\Windows\ULXZCJL.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NACJEMZ.EXE = "C:\\Windows\\NACJEMZ.EXE" | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
Enumerates connected drives
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\ULXZCJL.EXE | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| File opened for modification | C:\Windows\ULXZCJL.EXE | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
| File created | C:\Windows\NACJEMZ.EXE | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | N/A |
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\ULXZCJL.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4880 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\Windows\ULXZCJL.EXE |
| PID 4880 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\Windows\ULXZCJL.EXE |
| PID 4880 wrote to memory of 2252 | N/A | C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe | C:\Windows\ULXZCJL.EXE |
Processes
C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe
"C:\Users\Admin\AppData\Local\Temp\8d00635fc55eddbc9ac575ef147b532b0d4bed55583bdca3dcc33df909eaa44f.exe"
C:\Windows\ULXZCJL.EXE
C:\Windows\ULXZCJL.EXE
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| GB | 23.44.234.16:80 | tcp | |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 121.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/4880-4-0x00000000021F0000-0x00000000021F1000-memory.dmp
C:\PerfLogs\GOYZ.EXE
| MD5 | 165280c6246c57ea0cf55bf85acdd5ef |
| SHA1 | 080cc4510afea9f1706c3d7a18d490edff38c421 |
| SHA256 | 4782fc7f44d56ed93c05d0c1b6c7399804afaf0024df4300eb2026f33e4af1a2 |
| SHA512 | d7052815824cbb6749750242875419f71de5ec986987e54e80d3ea8cf9d24b18c26e28755c1b12425f17233fc48536ef9b440913dfbbd23bca41cba67299d12d |
C:\Windows\ULXZCJL.EXE
| MD5 | fc6c8c1309bf55141d60c52043f86d10 |
| SHA1 | 07e228551b0aa4b4fd90db071e950f6e0853c7cf |
| SHA256 | 2a89f40fc69d3cb0e5b3f67d406ecf527552cbfc7ef7c05aa1a750cc2caf59c9 |
| SHA512 | cda45aa0c186ae0d06a175bd92b7d66a8d80028c11895a53ec5b06f30f7d6e6d2854d62559ed7aa7dab4dc60706d1d9de3d4a9d718ad76fcdd19da6643ddb435 |
memory/2252-22-0x0000000000610000-0x0000000000611000-memory.dmp
memory/2252-23-0x0000000000610000-0x0000000000611000-memory.dmp