Analysis Overview
SHA256
7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a
Threat Level: Shows suspicious behavior
The file 7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
Modifies system executable filetype association
Loads dropped DLL
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-13 04:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 04:47
Reported
2024-06-13 04:49
Platform
win7-20240220-en
Max time kernel
149s
Max time network
122s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\MSipv | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\MSipv | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718254027" | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718254027" | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe
"C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe"
C:\Windows\system\rundll32.exe
C:\Windows\system\rundll32.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.zigui.org | udp |
| HK | 103.251.237.123:80 | www.zigui.org | tcp |
Files
memory/2360-0-0x0000000000400000-0x0000000000415A00-memory.dmp
C:\Windows\SysWOW64\notepad¢¬.exe
| MD5 | d2c0dd76e05e3ed2106089468b2d65a2 |
| SHA1 | 642967312de7e370e19515651b6cb460bec6e87e |
| SHA256 | 13cd0eb0d1b9065937173ff5e79f8b5088e0690d65e60d3782a491366697d2e3 |
| SHA512 | 8e9c96fe25347aa869797e0ceba8adf0d74ad34a76a24e4fb9eb23dfdfe521b130802e3b2c8ee303f365b2bce51e70ff7bd211645c0c20b79a7ceba5d0dfc69a |
\Windows\system\rundll32.exe
| MD5 | 78e70f15776f745ce34c37ad7f8cd1a3 |
| SHA1 | 0846c7c8a5bf2239ce55298a885b5acde9eac92d |
| SHA256 | b14d3b7c9b6836d4c9e20b9d1bd53477aa457bff42b185647c45230f017457f1 |
| SHA512 | 0778bacdb2d4a98f1dd56e78bc193f796dfaa365e53e5173f6f98a9e1081e6303de20c642861fe88ce946c8364f88e2ac049c2e3ad6e8b755cf7aa7ba5e08fe5 |
memory/2360-18-0x00000000002F0000-0x0000000000306000-memory.dmp
memory/2988-19-0x0000000000400000-0x0000000000415A00-memory.dmp
memory/2360-17-0x00000000002F0000-0x0000000000306000-memory.dmp
memory/2360-21-0x0000000000400000-0x0000000000415A00-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 04:47
Reported
2024-06-13 04:49
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| File created | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Windows\system\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\MSipv | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718254035" | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718254035" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\MSipv | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Windows\system\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | N/A |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\system\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4248 wrote to memory of 4660 | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | C:\Windows\system\rundll32.exe |
| PID 4248 wrote to memory of 4660 | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | C:\Windows\system\rundll32.exe |
| PID 4248 wrote to memory of 4660 | N/A | C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe | C:\Windows\system\rundll32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe
"C:\Users\Admin\AppData\Local\Temp\7acfc0f7c3e424d1e01bc74c15b86c3961f9ddae5950419a3a35e460dd03035a.exe"
C:\Windows\system\rundll32.exe
C:\Windows\system\rundll32.exe
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4032 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.zigui.org | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| HK | 103.251.237.123:80 | www.zigui.org | tcp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.173.189.20.in-addr.arpa | udp |
Files
memory/4248-0-0x0000000000400000-0x0000000000415A00-memory.dmp
C:\Windows\SysWOW64\notepad¢¬.exe
| MD5 | 3b42ff4a685dc780e4aa4ff22cdd9b22 |
| SHA1 | b6041b672cf48545ab3580b85725c9f2bf078abb |
| SHA256 | fbd5042adce2c89fc66a8db783a820d277bac844be78c006a2f4cd9f833ebb20 |
| SHA512 | 0fa58b350bc33ca50b2cc2f92d676b4e695b9505027e3695227ddff1e38efd49b467d4533b6edd9f71cda0422a93f35fda3840631a679feb53592d0aa134c2b9 |
C:\Windows\System\rundll32.exe
| MD5 | 2ee4c03249fee21f225f4eca24c0c2c4 |
| SHA1 | 0597594e1b192db58145acef4e3fa59fa7bbd9e3 |
| SHA256 | c80ac839960867719610c77501f0d08233dac7a71537b6bc7d674df7346e9995 |
| SHA512 | aa6c90e5dd11910ff7992bae85678c502db944d60e9fb996316e0d2ce4f3dea8ebe9203b18a6c4497831275d832e1c0bce79c51f1e9e4bbcab8235b60137d5b7 |
memory/4248-13-0x0000000000400000-0x0000000000415A00-memory.dmp