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Analysis
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max time kernel
93s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2024, 13:38
Behavioral task
behavioral1
Sample
loader1.exe
Resource
win7-20240903-en
8 signatures
150 seconds
General
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Target
loader1.exe
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Size
19.6MB
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MD5
fcfb2668c205cf6b25b256420ace004e
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SHA1
b3b696adff3cc0fc12f027347b582aa9cd7d5f20
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SHA256
4e3931657ed3103acf45c9356d5ef5648298cbfc5d11f8dd407b94e776c14fd5
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SHA512
9c577770ca4de729fb55420936802a21f02a765404e7faffc17aaa25bfee45bdfe8e606e0255530f3d01276c3729d285df748790449531eca5e6a393f1440297
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SSDEEP
393216:vNVL8SLSsbPpiZ8XtX64nYjRG3CA8d6i67sYppz6cvt2dL:1VLxTp2etX2Y3id45pz8L
Malware Config
Signatures
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Remcos family
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ loader1.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 loader1.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion loader1.exe -
resource yara_rule behavioral2/memory/1680-0-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-1-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-3-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-4-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-5-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-7-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-6-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-8-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-9-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-10-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida behavioral2/memory/1680-12-0x00007FF6EEE20000-0x00007FF6F0FCB000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA loader1.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1680 loader1.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1680 wrote to memory of 2848 1680 loader1.exe 83 PID 1680 wrote to memory of 2848 1680 loader1.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\loader1.exe"C:\Users\Admin\AppData\Local\Temp\loader1.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c cls2⤵PID:2848
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