Analysis Overview
SHA256
26bad25289defb0340ab061b79a2bb9130ef3cdf7630c670e9b5eb75165651b1
Threat Level: Known bad
The file 11674566496.zip was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
HawkEye
NirSoft WebBrowserPassView
NirSoft MailPassView
Nirsoft
Loads dropped DLL
Executes dropped EXE
Uses the VBS compiler for execution
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2023-08-30 07:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-08-30 07:07
Reported
2023-08-30 07:10
Platform
win7-20230712-en
Max time kernel
129s
Max time network
122s
Command Line
Signatures
HawkEye
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft WebBrowserPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | whatismyipaddress.com | N/A | N/A |
| N/A | whatismyipaddress.com | N/A | N/A |
| N/A | whatismyipaddress.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 568 set thread context of 2784 | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
| PID 568 set thread context of 2544 | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe
"C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe"
C:\Users\Admin\AppData\Roaming\winlogon.exe
"C:\Users\Admin\AppData\Roaming\winlogon.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | whatismyipaddress.com | udp |
| US | 104.16.154.36:80 | whatismyipaddress.com | tcp |
| US | 104.16.154.36:443 | whatismyipaddress.com | tcp |
| US | 104.16.154.36:443 | whatismyipaddress.com | tcp |
| US | 8.8.8.8:53 | mail.facebookmarketers.net | udp |
Files
memory/2372-0-0x0000000074600000-0x0000000074BAB000-memory.dmp
memory/2372-2-0x0000000000B60000-0x0000000000BA0000-memory.dmp
memory/2372-1-0x0000000074600000-0x0000000074BAB000-memory.dmp
\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
memory/2372-13-0x0000000074600000-0x0000000074BAB000-memory.dmp
memory/568-14-0x0000000074600000-0x0000000074BAB000-memory.dmp
memory/568-15-0x0000000000BC0000-0x0000000000C00000-memory.dmp
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
memory/568-16-0x0000000074600000-0x0000000074BAB000-memory.dmp
memory/568-21-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/568-22-0x0000000074600000-0x0000000074BAB000-memory.dmp
memory/2784-23-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2784-25-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2784-26-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2784-28-0x0000000000400000-0x000000000041B000-memory.dmp
memory/568-29-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2544-30-0x0000000000400000-0x0000000000458000-memory.dmp
memory/2544-32-0x0000000000400000-0x0000000000458000-memory.dmp
memory/2544-33-0x0000000000400000-0x0000000000458000-memory.dmp
memory/2544-36-0x0000000000400000-0x0000000000458000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\holderwb.txt
| MD5 | f3b25701fe362ec84616a93a45ce9998 |
| SHA1 | d62636d8caec13f04e28442a0a6fa1afeb024bbb |
| SHA256 | b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209 |
| SHA512 | 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84 |
Analysis: behavioral2
Detonation Overview
Submitted
2023-08-30 07:07
Reported
2023-08-30 07:10
Platform
win10v2004-20230703-en
Max time kernel
128s
Max time network
127s
Command Line
Signatures
HawkEye
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft WebBrowserPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | whatismyipaddress.com | N/A | N/A |
| N/A | whatismyipaddress.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2252 set thread context of 2380 | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
| PID 2252 set thread context of 4504 | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\winlogon.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe
"C:\Users\Admin\AppData\Local\Temp\e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce.exe"
C:\Users\Admin\AppData\Roaming\winlogon.exe
"C:\Users\Admin\AppData\Roaming\winlogon.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | whatismyipaddress.com | udp |
| US | 104.16.154.36:80 | whatismyipaddress.com | tcp |
| US | 104.16.154.36:443 | whatismyipaddress.com | tcp |
| US | 8.8.8.8:53 | 36.154.16.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.facebookmarketers.net | udp |
| US | 8.8.8.8:53 | mail.facebookmarketers.net | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.22.238.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/4264-0-0x0000000075070000-0x0000000075621000-memory.dmp
memory/4264-1-0x0000000075070000-0x0000000075621000-memory.dmp
memory/4264-2-0x0000000001760000-0x0000000001770000-memory.dmp
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
C:\Users\Admin\AppData\Roaming\winlogon.exe
| MD5 | 8ce71e40eda2d9304c1e127c60500e0c |
| SHA1 | 93ef97529dcaa047d023456103827b6f97345caf |
| SHA256 | e63b24adf9119f7d500167a62d62d3b8a35f4694f8488fc764523fd322fb2dce |
| SHA512 | 12c8386596d215cf56e6e14db5e14cce8b65a90c028f75abcce5169c0830f505bb82473232e58b1cf53b17375cc4f1c0054702ed7920033658f3fe327cb1a8e8 |
memory/2252-12-0x0000000075070000-0x0000000075621000-memory.dmp
memory/2252-13-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/4264-14-0x0000000075070000-0x0000000075621000-memory.dmp
memory/2252-15-0x0000000075070000-0x0000000075621000-memory.dmp
memory/2252-16-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/2252-21-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/2252-22-0x0000000075070000-0x0000000075621000-memory.dmp
memory/2380-23-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2380-25-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2380-26-0x0000000000400000-0x000000000041B000-memory.dmp
memory/2252-27-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/2252-28-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/2252-29-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/4504-30-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4504-32-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4504-33-0x0000000000400000-0x0000000000458000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\holderwb.txt
| MD5 | f94dc819ca773f1e3cb27abbc9e7fa27 |
| SHA1 | 9a7700efadc5ea09ab288544ef1e3cd876255086 |
| SHA256 | a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92 |
| SHA512 | 72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196 |
memory/4504-40-0x0000000000400000-0x0000000000458000-memory.dmp