493e63fee6fd8194364582a65762fdede3a7445a52d01b96d940576c8233c76c

Analysis

max time kernel
144s
max time network
160s
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/LastApp.xml
Size

640B
MD5

0f3b71d0fa474d73aff7de9cdf842732
SHA1

7990f81c60b8ab722c5ad7367f69c85106be5ed5
SHA256

5055de34114f55b1bfafbbbda68ec60c4291109780b9c197557b7c222c9a4e09
SHA512

afead4310e0d994d212c9e2ba1c783382fd8a434c3422d5d58eed998f9dc71f3583ca98480cec776b0372ddc9f04fd48a2008ee14ce7aed73d65d05663cf5868

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\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-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "3222079437"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31090294"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy\HomepagesUpgradeVersion = "1"	iexplore.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1472 wrote to memory of 2952	1472	MSOXMLED.EXE	78
PID 1472 wrote to memory of 2952	1472	MSOXMLED.EXE	78

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\LastApp.xml"
1⤵
- Suspicious use of WriteProcessMemory
PID:1472
- 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\LastApp.xml
  2⤵
  - Modifies Internet Explorer settings
  PID:2952

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/1472-0-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-1-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-2-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-4-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-3-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-6-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-7-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-8-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-5-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-9-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-10-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-11-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-12-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-13-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-14-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-15-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-17-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-19-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-18-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-20-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-22-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-21-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download
memory/1472-24-0x00007FFAF0C70000-0x00007FFAF0D2D000-memory.dmp

Filesize
756KB

Download
memory/1472-23-0x00007FFAF1D80000-0x00007FFAF1F89000-memory.dmp

Filesize
2.0MB

Download
memory/1472-16-0x00007FFAB1E10000-0x00007FFAB1E20000-memory.dmp

Filesize
64KB

Download