Analysis
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max time kernel
90s -
max time network
93s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
29-04-2024 08:20
Behavioral task
behavioral1
Sample
pack.rar
Resource
win11-20240419-en
Behavioral task
behavioral2
Sample
pack/Decrypter.exe
Resource
win11-20240419-en
Behavioral task
behavioral3
Sample
pack/cho2.exe
Resource
win11-20240419-en
Behavioral task
behavioral4
Sample
pack/privateKey.xml
Resource
win11-20240426-en
Behavioral task
behavioral5
Sample
pack/publicKey.xml
Resource
win11-20240419-en
General
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Target
pack/privateKey.xml
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Size
1KB
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MD5
0d192c21ea5ea6edbc046fa6217567c4
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SHA1
6b648a7adb79a19fd095b9e951477458577721f7
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SHA256
b065bc372314f2a606da7c3cd2264bb25a3576a7067095e141eee2e5e4258ec1
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SHA512
8faf5559d904d190278662a31d820adcf1f112fde1946422099735b4e6348c7ebbd9153cb9e6eb84ecbee1075320c6b0ea77f141363d0bf1df8106bd37055a22
Malware Config
Signatures
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Processes:
iexplore.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31103546" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy\HomepagesUpgradeVersion = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "4116479821" iexplore.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
MSOXMLED.EXEdescription pid process target process PID 3344 wrote to memory of 3744 3344 MSOXMLED.EXE iexplore.exe PID 3344 wrote to memory of 3744 3344 MSOXMLED.EXE iexplore.exe
Processes
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C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX64\Microsoft Shared\Office16\MSOXMLED.EXE"C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX64\Microsoft Shared\Office16\MSOXMLED.EXE" /verb open "C:\Users\Admin\AppData\Local\Temp\pack\privateKey.xml"1⤵
- Suspicious use of WriteProcessMemory
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\pack\privateKey.xml2⤵
- Modifies Internet Explorer settings
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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memory/3344-0-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-2-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-1-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-4-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-6-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-5-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-7-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-3-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-8-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-9-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-10-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-12-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-11-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-13-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-19-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-20-0x00007FFDF9900000-0x00007FFDF99BD000-memory.dmpFilesize
756KB
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memory/3344-18-0x00007FFDFB9C0000-0x00007FFDFBBC9000-memory.dmpFilesize
2.0MB
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memory/3344-17-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-16-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-15-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB
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memory/3344-14-0x00007FFDBBA50000-0x00007FFDBBA60000-memory.dmpFilesize
64KB