Analysis Overview
SHA256
1f513dc58beba7a95c1d04f10fe08af89e55f2dd6b0127d93df596e62a399de3
Threat Level: Shows suspicious behavior
The file eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe was found to be: Shows suspicious behavior.
Malicious Activity Summary
Reads user/profile data of web browsers
Executes dropped EXE
Loads dropped DLL
Deletes itself
Writes to the Master Boot Record (MBR)
Adds Run key to start application
Enumerates connected drives
Drops file in Program Files directory
System Network Configuration Discovery: Internet Connection Discovery
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Runs ping.exe
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 11:16
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 11:16
Reported
2024-11-11 11:18
Platform
win7-20240729-en
Max time kernel
116s
Max time network
105s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\esf = "c:\\Program Files\\qrkapvywt\\xbqfs.exe \"c:\\Program Files\\qrkapvywt\\xbqfs.dll\",EnumSourceFiles" | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Enumerates connected drives
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | \??\c:\Program Files\qrkapvywt\xbqfs.exe | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| File opened for modification | \??\c:\Program Files\qrkapvywt\xbqfs.exe | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| File opened for modification | \??\c:\Program Files\qrkapvywt | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| File created | \??\c:\Program Files\qrkapvywt\xbqfs.dll | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
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\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.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\PING.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
| N/A | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\Program Files\qrkapvywt\xbqfs.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hymnxu.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe
"C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hymnxu.exe "C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\hymnxu.exe
C:\Users\Admin\AppData\Local\Temp\\hymnxu.exe "C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
\??\c:\Program Files\qrkapvywt\xbqfs.exe
"c:\Program Files\qrkapvywt\xbqfs.exe" "c:\Program Files\qrkapvywt\xbqfs.dll",EnumSourceFiles C:\Users\Admin\AppData\Local\Temp\hymnxu.exe
Network
| Country | Destination | Domain | Proto |
| KR | 107.163.56.238:18530 | 107.163.56.238 | tcp |
| KR | 107.163.56.109:18530 | 107.163.56.109 | tcp |
| KR | 107.163.56.251:6658 | tcp | |
| KR | 107.163.56.239:18963 | tcp | |
| KR | 107.163.56.239:18963 | tcp | |
| KR | 107.163.56.239:18963 | tcp | |
| KR | 107.163.56.239:18963 | tcp | |
| KR | 107.163.56.251:6658 | tcp | |
| KR | 107.163.56.251:6658 | tcp |
Files
memory/2744-0-0x0000000000400000-0x0000000000443000-memory.dmp
memory/2744-2-0x0000000000400000-0x0000000000443000-memory.dmp
\Users\Admin\AppData\Local\Temp\hymnxu.exe
| MD5 | c9e41af7b9c4c9b00b0ddd2ce5027156 |
| SHA1 | b2c78257ada2b4ef0e9dfe14c80dffd1dc9a246e |
| SHA256 | fae222c049054b6809d1190f4cddb00791ea6093f4cbe041ab735aa248687fa9 |
| SHA512 | 0c9cefbce11490b0959b046545f6a50c05454e298a9781e84bb65a98368bda77323793e53b33b77cd8b5c5815e53e25d5732d2557859a85a83d6de06bc2ab7cb |
\Program Files\qrkapvywt\xbqfs.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
memory/2804-12-0x0000000000400000-0x0000000000443000-memory.dmp
\??\c:\Program Files\qrkapvywt\xbqfs.dll
| MD5 | f72ac65bae063457750ef74b7acce096 |
| SHA1 | c9f39eb53c64002ddf5f3c29aa007c203c6a5425 |
| SHA256 | bfb3e48ba79510f04f05a56562feec0707d9a6fc5d421b3a5a92306ced0ac29b |
| SHA512 | 43c5318f7e1f9ca499d8041b5b1a3756b0e1da6acea25b92ccf9bc4d5f47ccfa4885b85f005977796a6fcec03899283b6a03d8b83257f80986b07685156bd93f |
memory/2888-21-0x0000000010000000-0x0000000010079000-memory.dmp
memory/2888-22-0x0000000010000000-0x0000000010079000-memory.dmp
memory/2888-19-0x0000000010000000-0x0000000010079000-memory.dmp
memory/2888-23-0x0000000010000000-0x0000000010079000-memory.dmp
memory/2888-26-0x0000000010000000-0x0000000010079000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 11:16
Reported
2024-11-11 11:18
Platform
win10v2004-20241007-en
Max time kernel
118s
Max time network
114s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\esf = "c:\\Program Files\\fzzks\\kvffbwwa.exe \"c:\\Program Files\\fzzks\\kvffbwwa.dll\",EnumSourceFiles" | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Enumerates connected drives
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\Program Files\fzzks | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
| File created | \??\c:\Program Files\fzzks\kvffbwwa.dll | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
| File created | \??\c:\Program Files\fzzks\kvffbwwa.exe | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
| File opened for modification | \??\c:\Program Files\fzzks\kvffbwwa.exe | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
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\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.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\PING.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\Program Files\fzzks\kvffbwwa.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe
"C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hjhmxr.exe "C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe
C:\Users\Admin\AppData\Local\Temp\\hjhmxr.exe "C:\Users\Admin\AppData\Local\Temp\eda05842958f7fad73fd431a1d5ad40ec48d81d0a6e22901119448594f8cc976N.exe"
\??\c:\Program Files\fzzks\kvffbwwa.exe
"c:\Program Files\fzzks\kvffbwwa.exe" "c:\Program Files\fzzks\kvffbwwa.dll",EnumSourceFiles C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.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 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| KR | 107.163.56.238:18530 | tcp | |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| KR | 107.163.56.109:18530 | tcp | |
| KR | 107.163.56.251:6658 | tcp | |
| US | 8.8.8.8:53 | 251.56.163.107.in-addr.arpa | udp |
| KR | 107.163.56.239:18963 | 107.163.56.239 | tcp |
| KR | 107.163.56.239:18963 | 107.163.56.239 | tcp |
| US | 8.8.8.8:53 | 239.56.163.107.in-addr.arpa | udp |
| 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 | 172.214.232.199.in-addr.arpa | udp |
| KR | 107.163.56.239:18963 | tcp | |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.209.201.84.in-addr.arpa | udp |
| KR | 107.163.56.251:6658 | tcp |
Files
memory/3444-0-0x0000000000400000-0x0000000000443000-memory.dmp
memory/3444-2-0x0000000000400000-0x0000000000443000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\hjhmxr.exe
| MD5 | 5d67ef14f40ffaab97ab21686840a436 |
| SHA1 | 7ac5d59fe5e4f112048693da6deeb0fd5f410e09 |
| SHA256 | 75807384e601255bc7d34d2ff951c3d4663c923c4e30358838e7e89eed39a5fa |
| SHA512 | 58b075d16dc1f580a94abd29e802e8afaa7addd99b918346346cddb4792a92220d885250a2a88f7edb903d753e27b0e8e33d1666cf968cc5bd4275aaae740104 |
C:\Program Files\fzzks\kvffbwwa.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
memory/5116-10-0x0000000000400000-0x0000000000443000-memory.dmp
\??\c:\Program Files\fzzks\kvffbwwa.dll
| MD5 | bfdd091c301402f94d47b22502a4ad5c |
| SHA1 | 9013379788d802d7974940cd50656c08ade7ebfc |
| SHA256 | 91dd7e6f7625628c6309ec8923211832c34d2bf5692420bcac62bc8518970ef4 |
| SHA512 | 0df9cf158bf2aa3a52374ecb507fa21ddd9a51cb6507226853cbfefa5336954eebc46a90f3a92bd48069985e45717c0414cfd9e6414d1c4bb9d841291342302a |
memory/3348-14-0x0000000010000000-0x0000000010079000-memory.dmp
memory/3348-15-0x0000000010000000-0x0000000010079000-memory.dmp
memory/3348-18-0x0000000010000000-0x0000000010079000-memory.dmp