Analysis
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max time kernel
47s -
max time network
46s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
09-09-2024 23:13
Behavioral task
behavioral1
Sample
wfs4r3.zip
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
VertaxNew/Vertax.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
VertaxNew/qqSnA.dll
Resource
win10v2004-20240802-en
General
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Target
wfs4r3.zip
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Size
4.4MB
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MD5
dc9c46a3619965e735623a5e38a1ea92
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SHA1
588033ee11bdd103ad71cbef4314a28de268f4e5
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SHA256
e29d278e33da6d0decd86fc5d0dc2cbd842a6b55934e4c72d10081ffb97ffbe4
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SHA512
e8c91b7d46a0203d532c428f6ab0e060bc5e2e70d9c93ad2ec0aa5e0752001a32e34606611609d3c5649aa45dd22923a5ef9ff7877ee9d8409ca61983397e674
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SSDEEP
98304:ruNJZ4pW50PVw2zwPb9sI0nMJR8fWVgtd/sTTNTyuvqeV7MI:ruLZsWWP5o9BJRtE03NTyuvrV7L
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla payload 1 IoCs
resource yara_rule behavioral1/memory/4424-19-0x00000000071D0000-0x00000000073E4000-memory.dmp family_agenttesla -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Vertax.exe -
Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions Vertax.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools Vertax.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Vertax.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Vertax.exe -
Executes dropped EXE 1 IoCs
pid Process 4424 Vertax.exe -
Loads dropped DLL 2 IoCs
pid Process 4424 Vertax.exe 4424 Vertax.exe -
resource yara_rule behavioral1/files/0x000700000001da1e-4.dat themida behavioral1/memory/4424-9-0x00000000008A0000-0x000000000120A000-memory.dmp themida behavioral1/memory/4424-10-0x00000000008A0000-0x000000000120A000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Vertax.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 Vertax.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum Vertax.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 4424 Vertax.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Vertax.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer Vertax.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion Vertax.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS Vertax.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe 4424 Vertax.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeRestorePrivilege 3004 7zG.exe Token: 35 3004 7zG.exe Token: SeSecurityPrivilege 3004 7zG.exe Token: SeSecurityPrivilege 3004 7zG.exe Token: SeDebugPrivilege 4424 Vertax.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3004 7zG.exe
Processes
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C:\Windows\Explorer.exeC:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\wfs4r3.zip1⤵PID:1320
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1064
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C:\Program Files\7-Zip\7zG.exe"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Desktop\" -an -ai#7zMap10439:92:7zEvent201061⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3004
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C:\Users\Admin\Desktop\VertaxNew\Vertax.exe"C:\Users\Admin\Desktop\VertaxNew\Vertax.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4424
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.3MB
MD532980bf90249d39c2bc463e6fb5cefa7
SHA176e18853ef019cff4b0015d1a6f8c47f3f506eba
SHA256ed2d5f70ec106e4274bca6a85022a1fffad82c66745bde3c876962c06b75b61b
SHA512156c9ffce33bf7b858bd85da726aa6ef6d8e9eee51d6c6072777037505619b144e332634158172cf36dcd3fa432fb266c32d1422f698ad1b4a9ca5087ed8c550
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Filesize
187KB
MD5723d164690fc603643300163eba52041
SHA18533a92f65e6811bee999148e515e8c202667a9b
SHA2567d1c100f1e79e91f8d6b9eaed5900e55c9483fdb22f07af8b10ee647230bdfbf
SHA512dde4d24f122a51183ba57098b15c37fb411dbf21b8aa087e27c8394b8f7a99461a1ef30089dee44569c4fb72536dbb9b827c1f5409222339775f0279ba2fd2b9