Analysis Overview
SHA256
afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1
Threat Level: Shows suspicious behavior
The file afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Modifies system executable filetype association
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-09 07:32
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-09 07:32
Reported
2024-06-09 07:37
Platform
win7-20231129-en
Max time kernel
149s
Max time network
120s
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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
Modifies system executable filetype association
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File created | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File created | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File created | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| 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:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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\MSipv | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 = "1717918475" | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717918475" | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" | C:\Windows\system\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | 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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe
"C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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/952-0-0x0000000000400000-0x0000000000415A00-memory.dmp
C:\Windows\SysWOW64\notepad¢¬.exe
| MD5 | c27c5e5d2bbff016226d439d084db31f |
| SHA1 | 52ed7998424fd004742973c402b06c973b10a449 |
| SHA256 | 869297bcfbe5b5eee4eafb354332343490b0d7f263ccfe2218a2a379c01756ec |
| SHA512 | 2ee5ac9ccf21086dec549ca4043bc96bdc4c6093fb6b3c0e8474c393d689693d75597d7fb0e512eaab1e7f33ed209f1544b42932544dcc52129005b6b2ad5c4b |
\Windows\system\rundll32.exe
| MD5 | 7df7466ee7bbec4e07c8161b8fbdc2f1 |
| SHA1 | 6444df507ee2c0cf50439ae1aa7be03ad083e330 |
| SHA256 | 61b4396eabc593b439eb7514e2283f85325f51cd673834b51f20c0309d4f2bd4 |
| SHA512 | 87ae8f4f4acb1a5f124b210c06b99a89579b0351a46a8035a801fe8edf0a5faddfb3f0737319b1451b4ac90eb7503a695646ea9a34a96723dbe99e7a54685a6d |
memory/2996-19-0x0000000000400000-0x0000000000415A00-memory.dmp
memory/952-18-0x00000000003E0000-0x00000000003F6000-memory.dmp
memory/952-17-0x00000000003E0000-0x00000000003F6000-memory.dmp
memory/952-21-0x0000000000400000-0x0000000000415A00-memory.dmp
memory/952-22-0x00000000003E0000-0x00000000003E2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-09 07:32
Reported
2024-06-09 07:37
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
133s
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:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File created | C:\Windows\SysWOW64\¢«.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\notepad¢¬.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| File created | C:\Windows\system\rundll32.exe | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 = "1717918476" | 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\MSipv | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717918476" | C:\Windows\system\rundll32.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" | C:\Windows\system\rundll32.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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 4504 wrote to memory of 4192 | N/A | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | C:\Windows\system\rundll32.exe |
| PID 4504 wrote to memory of 4192 | N/A | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | C:\Windows\system\rundll32.exe |
| PID 4504 wrote to memory of 4192 | N/A | C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe | C:\Windows\system\rundll32.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.exe
"C:\Users\Admin\AppData\Local\Temp\afc22d19136f9db671708293e114ab529bde5a3e0c3a5dce7e5e904d5ad3c8d1.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 --field-trial-handle=4212,i,6576818814118437872,11004518367271063231,262144 --variations-seed-version --mojo-platform-channel-handle=4132 /prefetch:8
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 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.zigui.org | udp |
| HK | 103.251.237.123:80 | www.zigui.org | tcp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.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 |
Files
memory/4504-0-0x0000000000400000-0x0000000000415A00-memory.dmp
C:\Windows\SysWOW64\notepad¢¬.exe
| MD5 | 7b1174853b33e1bfa2685549e5cc9709 |
| SHA1 | 201ef34017ce7e11447c2d049d264ccc6affca97 |
| SHA256 | 534a602e65f9587d6e0c781cea915a39444e28e14d5e626c43f3152d2c2a7777 |
| SHA512 | bfc4a2ff12ed5b83b8dc0101666686b78e68da1c928975d3836203bbfbf4b06cd0712c7dfe38ae5d2484de4001e873334767d659ad4ab5eb0f0d0de00e842c8c |
C:\Windows\System\rundll32.exe
| MD5 | 0ac150839f3ada246b57b0b9f0905226 |
| SHA1 | 16465d767f2adb22ec4c02c4096f09fd9583ce44 |
| SHA256 | 820e55052079ecaae51e0a45595ab397f62f6a5f852b4030627a1a69f184d0ab |
| SHA512 | 9327e93edb33623f867ee78cb43f8839e49dfb54e164f36f5f601eac66bcd3fcda9b51544479d92977f5ec9e609518de4f8d103c836a64d5261372688180f9c3 |
memory/4504-13-0x0000000000400000-0x0000000000415A00-memory.dmp