Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-03-2024 08:14
Behavioral task
behavioral1
Sample
4204b9d4c4df5c4b4d67922db24f342a.exe
Resource
win7-20240220-en
General
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Target
4204b9d4c4df5c4b4d67922db24f342a.exe
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Size
3.2MB
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MD5
4204b9d4c4df5c4b4d67922db24f342a
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SHA1
9255b5e94028f3f55adda2576d60bd39452eaf08
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SHA256
62cd7b447bdee3ec1670c92d9585e1fddbaa5d4ee824dee8f15940005bf95414
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SHA512
0b4ed4d6397c9f34cf2c72d9c581a6e5d94eabf395da0010073b1600883dac6fcc48c1606ffee29952bd60707caf03b8a6d6cf644b2ac668306b4a418d726423
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SSDEEP
49152:l/Ki16IscOcmroPBql2IzydQgfTzTGKr6d61YryTz3onQqHlfBrfgOtat:Ujpreg7zyWsFGd61QYoHBroO4t
Malware Config
Signatures
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Modifies firewall policy service 2 TTPs 1 IoCs
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules\C:\ = "1" 4204b9d4c4df5c4b4d67922db24f342a.exe -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 4204b9d4c4df5c4b4d67922db24f342a.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 4204b9d4c4df5c4b4d67922db24f342a.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 4204b9d4c4df5c4b4d67922db24f342a.exe -
Processes:
resource yara_rule behavioral2/memory/1804-0-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-5-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-3-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-7-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-8-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-11-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-10-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-9-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida behavioral2/memory/1804-20-0x00007FF68D8C0000-0x00007FF68E321000-memory.dmp themida -
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 4204b9d4c4df5c4b4d67922db24f342a.exe -
Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 9 api.myip.com 10 api.myip.com 13 ipinfo.io 18 ipinfo.io -
Drops file in System32 directory 4 IoCs
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exedescription ioc process File opened for modification C:\Windows\System32\GroupPolicy 4204b9d4c4df5c4b4d67922db24f342a.exe File opened for modification C:\Windows\System32\GroupPolicy\gpt.ini 4204b9d4c4df5c4b4d67922db24f342a.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 4204b9d4c4df5c4b4d67922db24f342a.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 4204b9d4c4df5c4b4d67922db24f342a.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
4204b9d4c4df5c4b4d67922db24f342a.exepid process 1804 4204b9d4c4df5c4b4d67922db24f342a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4204b9d4c4df5c4b4d67922db24f342a.exe"C:\Users\Admin\AppData\Local\Temp\4204b9d4c4df5c4b4d67922db24f342a.exe"1⤵
- Modifies firewall policy service
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1804
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:4608
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4000