Analysis Overview
SHA256
c7fc7246d6850f8ea01b150cc6220f8ff4d2b045318176835e6aa832a593317a
Threat Level: Known bad
The file ViennaExec.exe was found to be: Known bad.
Malicious Activity Summary
AgentTesla
Xworm
Detect Xworm Payload
Looks for VirtualBox Guest Additions in registry
AgentTesla payload
Looks for VMWare Tools registry key
Checks computer location settings
Loads dropped DLL
Checks BIOS information in registry
Executes dropped EXE
Maps connected drives based on registry
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-28 12:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-28 12:01
Reported
2024-05-28 12:04
Platform
win10v2004-20240426-en
Max time kernel
148s
Max time network
96s
Command Line
Signatures
AgentTesla
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Xworm
AgentTesla payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Looks for VirtualBox Guest Additions in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
Looks for VMWare Tools registry key
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Viena-Exec = "C:\\Users\\Admin\\AppData\\Roaming\\Viena-Exec.exe" | C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe | N/A |
Maps connected drives based on registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tt.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe
"C:\Users\Admin\AppData\Local\Temp\ViennaExec.exe"
C:\Users\Admin\AppData\Local\Temp\tt.exe
"C:\Users\Admin\AppData\Local\Temp\tt.exe"
C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe
"C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Viena-Exec" /tr "C:\Users\Admin\AppData\Roaming\Viena-Exec.exe"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /delete /f /tn "Viena-Exec"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9579.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
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 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | blood-sticker.gl.at.ply.gg | udp |
| US | 147.185.221.19:65461 | blood-sticker.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.221.185.147.in-addr.arpa | udp |
| US | 147.185.221.19:65461 | blood-sticker.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/1908-0-0x00007FFFD5833000-0x00007FFFD5835000-memory.dmp
memory/1908-1-0x00000000007D0000-0x00000000008F2000-memory.dmp
memory/1908-2-0x000000001B7F0000-0x000000001B902000-memory.dmp
memory/1908-3-0x00007FFFD5830000-0x00007FFFD62F1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tt.exe
| MD5 | a78e0eed0519f40f484bb90140094421 |
| SHA1 | 27bec5491e51282929d231045b3afeb64a6ad870 |
| SHA256 | 3b19ffaef69c19ce4b3a4a8b94e2117d4437544286009b357661312672a15e3b |
| SHA512 | 301c29e12e6ebe37fe266a5e16e3b7d779b22617fc8cc778395bd7024840cfc06024f09b989d93fe5f92f53a62f129bef687b1ff0b8502ff20fb195d8b8ec2e5 |
memory/1760-21-0x0000000074D6E000-0x0000000074D6F000-memory.dmp
memory/1760-24-0x0000000000F10000-0x0000000000F82000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Viena-Exec.exe
| MD5 | 5eb6e01db54df58a5a7de27e767ffaf5 |
| SHA1 | ec26ea621d1ea0058674f7df9dac96c971a92a03 |
| SHA256 | 3228ad175ceb3ca939cc22560998070a65fe599b0061fc3c597e98988c6bc09f |
| SHA512 | bbabccd56e2694923ab50d10df57a382dafb0a27415af4c698938166512767179a759cacb5e2704ff0e028c37b9cbcb7374719e79386041d31fcc839990927b5 |
memory/2792-34-0x00007FFFD5833000-0x00007FFFD5835000-memory.dmp
memory/2792-35-0x0000000000920000-0x0000000000930000-memory.dmp
memory/1760-36-0x0000000005F10000-0x00000000064B4000-memory.dmp
memory/1760-37-0x0000000005A00000-0x0000000005A92000-memory.dmp
memory/1908-38-0x00007FFFD5830000-0x00007FFFD62F1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Guna.UI2.dll
| MD5 | c19e9e6a4bc1b668d19505a0437e7f7e |
| SHA1 | 73be712aef4baa6e9dabfc237b5c039f62a847fa |
| SHA256 | 9ac8b65e5c13292a8e564187c1e7446adc4230228b669383bd7b07035ab99a82 |
| SHA512 | b6cd0af436459f35a97db2d928120c53d3691533b01e4f0e8b382f2bd81d9a9a2c57e5e2aa6ade9d6a1746d5c4b2ef6c88d3a0cf519424b34445d0d30aab61de |
memory/1760-42-0x0000000005CC0000-0x0000000005ED4000-memory.dmp
memory/1760-43-0x0000000005EF0000-0x0000000005EFA000-memory.dmp
memory/1760-44-0x0000000005910000-0x0000000005920000-memory.dmp
memory/2792-48-0x000000001B600000-0x000000001B610000-memory.dmp
memory/2792-49-0x000000001C260000-0x000000001C26A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp9579.tmp.bat
| MD5 | 7040c9e807b95da4512a58ed603a5465 |
| SHA1 | 72055ef4d675822c7e4a9c8af23c85e2a5908734 |
| SHA256 | a8ee16d28c5b468fbd5084baee961ad75d7c4785a234bc481a2c4fe2f0e08702 |
| SHA512 | b1a36d5245b6bc47927cb3edd5b5b229b178c4e4a8db11cfbfffb92999a361ce88d7deb3e7eecf8846919cf92141eba47840dd71fbda3c421b877645e1c5dfce |
memory/1760-55-0x0000000005910000-0x0000000005920000-memory.dmp