493e63fee6fd8194364582a65762fdede3a7445a52d01b96d940576c8233c76c

Analysis

max time kernel
144s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
23/02/2024, 11:25

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General

Target

$APPDATA/EaseUSOS2Go4.0/os2go/bin/NASOperator.dll.xml
Size

616B
MD5

f45fedfcce4a78fd25ea62ce9c2f089f
SHA1

ff2f255a5a9342f3b494b96bad04f3687623f0a7
SHA256

355f202ffd0106f6af1810742223cd92f96a63f0e4867d963152cb52b171653b
SHA512

01740f858ac78561f447710f00590f160e9faee7e7ac085ff4ccdda0ac9a0147bad8c810f52ae78cad13b8dc81f6fd2869121beb3acb3bbc04a48861bbfb59a3

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31090310"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\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-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4280069375-290121026-380765049-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "2252698790"	iexplore.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2372	2028	MSOXMLED.EXE	79
PID 2028 wrote to memory of 2372	2028	MSOXMLED.EXE	79

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\$APPDATA\EaseUSOS2Go4.0\os2go\bin\NASOperator.dll.xml"
1⤵
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\$APPDATA\EaseUSOS2Go4.0\os2go\bin\NASOperator.dll.xml
  2⤵
  - Modifies Internet Explorer settings
  PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2028-0-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-1-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-2-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-3-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-4-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-5-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-6-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-7-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-8-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-9-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-10-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-11-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-12-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-14-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-16-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-15-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-17-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-18-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-13-0x00007FFCAFB90000-0x00007FFCAFBA0000-memory.dmp

Filesize
64KB

Download
memory/2028-19-0x00007FFCEFB00000-0x00007FFCEFD09000-memory.dmp

Filesize
2.0MB

Download
memory/2028-20-0x00007FFCEE160000-0x00007FFCEE21D000-memory.dmp

Filesize
756KB

Download