Analysis
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max time kernel
127s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
09-01-2023 03:38
Behavioral task
behavioral1
Sample
Install.exe
Resource
win7-20221111-en
General
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Target
Install.exe
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Size
6.7MB
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MD5
4b9e8b2f3ea2608442a84b93c3b04545
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SHA1
8b4d08b15fc86adf6c7783b8e88cd313f012674e
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SHA256
f96864b6f9c6af50b4f71073ea5396e96c5b80bc3024a1531064f43b34497d12
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SHA512
0248bee7ba26dcbd086a9c719b8463e013e0121ebcfe3b70f04fb7cd99f2e3da54b243aed3c1e59f7df9fd54717d153999f72a58f53dddcfc757a9ccbb85d811
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SSDEEP
196608:7ZH239wkNJymM3IhIKrO1lrG6uFuCkSZnb7d:NH239zTywng8J1Zb7d
Malware Config
Signatures
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
Install.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Install.exe -
Processes:
resource yara_rule behavioral2/memory/2600-132-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-133-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-134-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-135-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-137-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-138-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-139-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-140-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect behavioral2/memory/2600-142-0x0000000000840000-0x00000000012D8000-memory.dmp vmprotect -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
Install.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Install.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Install.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Install.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation Install.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Processes:
resource yara_rule behavioral2/memory/2600-132-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-133-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-134-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-135-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-137-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-138-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-139-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-140-0x0000000000840000-0x00000000012D8000-memory.dmp themida behavioral2/memory/2600-142-0x0000000000840000-0x00000000012D8000-memory.dmp themida -
Processes:
Install.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Install.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 14 ipinfo.io 15 ipinfo.io -
Drops file in System32 directory 4 IoCs
Processes:
Install.exedescription ioc process File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI Install.exe File opened for modification C:\Windows\System32\GroupPolicy Install.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini Install.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol Install.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
Install.exepid process 2600 Install.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Install.exepid process 2600 Install.exe 2600 Install.exe 2600 Install.exe 2600 Install.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Install.exe"C:\Users\Admin\AppData\Local\Temp\Install.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/2600-132-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-133-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-134-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-136-0x0000000077CF0000-0x0000000077E93000-memory.dmpFilesize
1.6MB
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memory/2600-135-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-137-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-138-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-139-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-140-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB
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memory/2600-141-0x0000000077CF0000-0x0000000077E93000-memory.dmpFilesize
1.6MB
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memory/2600-142-0x0000000000840000-0x00000000012D8000-memory.dmpFilesize
10.6MB