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Analysis
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max time kernel
144s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
07/05/2023, 09:20
Static task
static1
Behavioral task
behavioral1
Sample
taskhostcl.exe
Resource
win7-20230220-en
General
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Target
taskhostcl.exe
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Size
3.8MB
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MD5
1f175c2b390c4a969e20ee55b9717cb0
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SHA1
597a0d6feab62c7bff88b2321e3816ab4dc447bb
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SHA256
e7726f656b2c499257541c6f77f80da3dbc68761a0c86b39c59b292a99800413
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SHA512
6f2f07026669d27737cdada05e36a048502a7d624040a18cc3e8c8021143589f456422a5c4f8d2dba72ccba65e3dc119f52ed4741ddf24121c8a3d7799de19e4
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SSDEEP
98304:3A/QAh25W+xsqp/ObAHj7gkHRHz2XI9rG7rBHyqBcp0:khGpxfNObADUkHRHqcSrNBcW
Malware Config
Extracted
laplas
http://45.159.189.105
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api_key
f52a5c9bc5eb2f51b22f04f3e85c301ac0170a650de6044773f0a8309fbdfb79
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ taskhostcl.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ntlhost.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion taskhostcl.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ntlhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ntlhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion taskhostcl.exe -
Executes dropped EXE 1 IoCs
pid Process 2664 ntlhost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe" taskhostcl.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA taskhostcl.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ntlhost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1356 taskhostcl.exe 2664 ntlhost.exe -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 9 Go-http-client/1.1 -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1356 wrote to memory of 2664 1356 taskhostcl.exe 84 PID 1356 wrote to memory of 2664 1356 taskhostcl.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\taskhostcl.exe"C:\Users\Admin\AppData\Local\Temp\taskhostcl.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1356 -
C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exeC:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:2664
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
420.6MB
MD5484f0c2d9d6ebc9203db4adbaa1900a7
SHA12b8a2ba4a885b6e92fb47eed52a3ec0648115930
SHA256f3a7fc082480bb8a5a15e810605580ebe5cf1eafb5d72eff1c120e087d3f1112
SHA5125486816c9c7a0b7110032424f56e1da7451d812ba42a76b58a803365e9eb6478cb5404f301d6a90ad4a31be4b9c6e6e3a18661b9140b0884e9693c0b0f68807d
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Filesize
414.4MB
MD559fc2aacdb2227f3dbc1789deb651748
SHA1052f436142e62d62de24ef86f2eb8e72587720ea
SHA256b6e2a3095012de4db85353e2cc7106b6afc2379c97b4211f4a7da2ec0a611773
SHA5120d153a59e1ac7c37e1e18085adcee983a5cae335b7ee59f2de96e63b95aa180cb624399b7a994dea7b3aa7d3d0f698300cb9071343c764a861201e8058ab83fb