Analysis
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max time kernel
271s -
max time network
292s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
25-04-2023 04:47
Static task
static1
Behavioral task
behavioral1
Sample
4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe
Resource
win7-20230220-en
General
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Target
4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe
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Size
3.1MB
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MD5
aa7df3ed889baecbe0a09bc3e75efbfe
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SHA1
2d9f8e98597611f0c70a28f0f5a96c9c963b8277
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SHA256
4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d
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SHA512
6e43f52839ab0dbbd74f1fe3c041f974df3abce97f23dc441a679e479551083c3d81bb1d3da9f89855549dee8a79415907fc3bf833c0a36704ad727b122f3333
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SSDEEP
49152:CADdEi3psHUFpBlM7pEdraVsosJ585bm57orAxRG:CEdEi5sHypQ7ayQfj5oAxR
Malware Config
Extracted
laplas
http://163.123.142.220
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api_key
a0f588021b58e0c7908a163f8750678efedf2a66bf739a12427b379aef47ccde
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__ 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.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\SystemBiosVersion 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion ntlhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion ntlhost.exe -
Executes dropped EXE 1 IoCs
pid Process 1108 ntlhost.exe -
Loads dropped DLL 1 IoCs
pid Process 928 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\NTSystem = "C:\\Users\\Admin\\AppData\\Roaming\\NTSystem\\ntlhost.exe" 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ntlhost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 928 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe 1108 ntlhost.exe -
GoLang User-Agent 1 IoCs
Uses default user-agent string defined by GoLang HTTP packages.
description flow ioc HTTP User-Agent header 1 Go-http-client/1.1 -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 928 wrote to memory of 1108 928 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe 28 PID 928 wrote to memory of 1108 928 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe 28 PID 928 wrote to memory of 1108 928 4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe"C:\Users\Admin\AppData\Local\Temp\4b3cce8e86d60ac8b9ac01d2dd135d6a8386c08098e95fbf7a65a069dfd96f1d.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:928 -
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:1108
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
754.1MB
MD5ffc0e3e9f10490084a37ea39778fce42
SHA14c44003e097363c7c545ab92aa42a7fdd3f4843b
SHA256a49581cb75f4f7fba57e49099c47133a304b4f42403fdac66480dbe99705f954
SHA512c20c8ef90d07152d25b105c2acba733fdda77e8cd66bf6b9e1470440f48fe07eff15eec3044034b746b21526c8d93917279e78c42e3f5a8131712a4a5563fb44
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Filesize
754.1MB
MD5ffc0e3e9f10490084a37ea39778fce42
SHA14c44003e097363c7c545ab92aa42a7fdd3f4843b
SHA256a49581cb75f4f7fba57e49099c47133a304b4f42403fdac66480dbe99705f954
SHA512c20c8ef90d07152d25b105c2acba733fdda77e8cd66bf6b9e1470440f48fe07eff15eec3044034b746b21526c8d93917279e78c42e3f5a8131712a4a5563fb44