Analysis Overview
SHA256
eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446
Threat Level: Likely malicious
The file eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446 was found to be: Likely malicious.
Malicious Activity Summary
Detects executables containing base64 encoded User Agent
Executes dropped EXE
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Adds Run key to start application
Writes to the Master Boot Record (MBR)
Enumerates connected drives
Drops file in Program Files directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Suspicious use of WriteProcessMemory
Runs ping.exe
Suspicious use of SetWindowsHookEx
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-15 03:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-15 03:34
Reported
2024-06-15 03:37
Platform
win7-20240611-en
Max time kernel
140s
Max time network
144s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.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\zvyqjld.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.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-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\Cache = "c:\\Program Files\\fymwetb\\aplkit.exe \"c:\\Program Files\\fymwetb\\aplkit.dll\",Cache" | \??\c:\Program Files\fymwetb\aplkit.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\fymwetb\aplkit.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\Program Files\fymwetb | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
| File created | \??\c:\Program Files\fymwetb\aplkit.dll | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
| File created | \??\c:\Program Files\fymwetb\aplkit.exe | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
| File opened for modification | \??\c:\Program Files\fymwetb\aplkit.exe | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\Program Files\fymwetb\aplkit.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\fymwetb\aplkit.exe | N/A |
| N/A | N/A | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\Program Files\fymwetb\aplkit.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe
"C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zvyqjld.exe "C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe
C:\Users\Admin\AppData\Local\Temp\\zvyqjld.exe "C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
\??\c:\Program Files\fymwetb\aplkit.exe
"c:\Program Files\fymwetb\aplkit.exe" "c:\Program Files\fymwetb\aplkit.dll",Cache C:\Users\Admin\AppData\Local\Temp\zvyqjld.exe
Network
| Country | Destination | Domain | Proto |
| US | 174.139.6.44:803 | tcp | |
| US | 107.163.56.110:18530 | 107.163.56.110 | tcp |
| US | 174.139.6.44:803 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.42:3204 | tcp |
Files
memory/1244-0-0x0000000000400000-0x000000000048C050-memory.dmp
memory/1244-2-0x0000000000400000-0x000000000048C050-memory.dmp
\Users\Admin\AppData\Local\Temp\zvyqjld.exe
| MD5 | 9a382aa0384ac5ac876b53503588c07f |
| SHA1 | 609735e179a9c07dd36667e7bd009d2d4c1da76a |
| SHA256 | fb5d1573dac0b8b63a34298b1285eea7b46a71fc7476b13c89fbe074011de9c3 |
| SHA512 | 4cba23be76b03904823450d3ea2dd02d7a37412663d5e9b27156691975e36b83f80eaae8e68c6ad2bbc061799084c02b5a1159dc5d5912244ff5b1ce38455889 |
memory/2480-7-0x0000000000400000-0x000000000048D000-memory.dmp
memory/3068-9-0x0000000000400000-0x000000000048C050-memory.dmp
memory/2480-8-0x0000000000400000-0x000000000048D000-memory.dmp
\Program Files\fymwetb\aplkit.exe
| MD5 | 51138beea3e2c21ec44d0932c71762a8 |
| SHA1 | 8939cf35447b22dd2c6e6f443446acc1bf986d58 |
| SHA256 | 5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124 |
| SHA512 | 794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d |
memory/3068-16-0x0000000000400000-0x000000000048C050-memory.dmp
\??\c:\Program Files\fymwetb\aplkit.dll
| MD5 | 860870fd39a21d219c4bc7a5409fe5cd |
| SHA1 | 5fa0f4918e853907273a26eb82452add6070bcfa |
| SHA256 | af49bb1508c2e287c3fac8cbe33efe7ffe99f04358ec23192e1e86e4db552d3e |
| SHA512 | a58c0c8de5afc4bd8c2ed1b039c0a08b10b02585ac07ee7880589214448b1d1dff6db05b24ef6e266cd00f574e01948fae0768f8527880933ad03fc41fc560e8 |
memory/2360-22-0x0000000010000000-0x000000001006F000-memory.dmp
memory/2360-25-0x0000000010000000-0x000000001006F000-memory.dmp
memory/2360-23-0x0000000010000000-0x000000001006F000-memory.dmp
memory/2360-26-0x0000000010000000-0x000000001006F000-memory.dmp
memory/2360-28-0x0000000010000000-0x000000001006F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-15 03:34
Reported
2024-06-15 03:37
Platform
win10v2004-20240508-en
Max time kernel
140s
Max time network
135s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
| N/A | N/A | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\Program Files\zrrkb\bykksnqp.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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cache = "c:\\Program Files\\zrrkb\\bykksnqp.exe \"c:\\Program Files\\zrrkb\\bykksnqp.dll\",Cache" | \??\c:\Program Files\zrrkb\bykksnqp.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\zrrkb\bykksnqp.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\Program Files\zrrkb | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
| File created | \??\c:\Program Files\zrrkb\bykksnqp.dll | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
| File created | \??\c:\Program Files\zrrkb\bykksnqp.exe | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
| File opened for modification | \??\c:\Program Files\zrrkb\bykksnqp.exe | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\Program Files\zrrkb\bykksnqp.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\zrrkb\bykksnqp.exe | N/A |
| N/A | N/A | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
| N/A | N/A | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
| N/A | N/A | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\Program Files\zrrkb\bykksnqp.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\pylzd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe
"C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\pylzd.exe "C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
C:\Users\Admin\AppData\Local\Temp\pylzd.exe
C:\Users\Admin\AppData\Local\Temp\\pylzd.exe "C:\Users\Admin\AppData\Local\Temp\eecbe0ee158252e585f11e95a43462649a90440717091cecc2d8b4e030ce6446.exe"
\??\c:\Program Files\zrrkb\bykksnqp.exe
"c:\Program Files\zrrkb\bykksnqp.exe" "c:\Program Files\zrrkb\bykksnqp.dll",Cache C:\Users\Admin\AppData\Local\Temp\pylzd.exe
Network
| Country | Destination | Domain | Proto |
| US | 174.139.6.44:803 | tcp | |
| US | 107.163.56.110:18530 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.43:805 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.42:3204 | tcp | |
| US | 174.139.6.42:3204 | tcp |
Files
memory/4128-0-0x0000000000400000-0x000000000048C050-memory.dmp
memory/4128-2-0x0000000000400000-0x000000000048C050-memory.dmp
C:\Users\Admin\AppData\Local\Temp\pylzd.exe
| MD5 | e235de10ee0e1064948a14803a51e772 |
| SHA1 | 71ff6a28492854a33c5f9b8755d01e6a4e7a7117 |
| SHA256 | 2399d86ab0e9708d38b28571c609616235e27dbc59d205467bf5ee48abe14e2f |
| SHA512 | 264d7a54138ca7c71d85ed64531f0566496454c55a470f7f65ff6f52bd7d44ac8f8da7d18e5fe6d73d0c259182bc02d4d2b5964c8fcf812a961ad364e17e1d13 |
memory/4796-6-0x0000000000400000-0x000000000048C050-memory.dmp
C:\Program Files\zrrkb\bykksnqp.exe
| MD5 | 889b99c52a60dd49227c5e485a016679 |
| SHA1 | 8fa889e456aa646a4d0a4349977430ce5fa5e2d7 |
| SHA256 | 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910 |
| SHA512 | 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641 |
memory/4796-11-0x0000000000400000-0x000000000048C050-memory.dmp
\??\c:\Program Files\zrrkb\bykksnqp.dll
| MD5 | 721b43c9cec5114c7dc3bb7c3961638a |
| SHA1 | 66460771e6876e6a9aee546682e2c30a3881f15c |
| SHA256 | 858bc90f161a3bdf8b38613c369a2c2e7252d4f9b9ae0528e5ab3350689bcef0 |
| SHA512 | f6697ac3c29c776ed292c571dac7ca11de4eca69e2a5b7ab0419c66bbc074f3dad87efcbbd4b3fa4a2f1cc4c6976a8ba7a164a2fd152ec4388ea4f230183d4fc |
memory/3052-15-0x0000000010000000-0x000000001006F000-memory.dmp
memory/3052-16-0x0000000010000000-0x000000001006F000-memory.dmp
memory/3052-18-0x0000000010000000-0x000000001006F000-memory.dmp