493e63fee6fd8194364582a65762fdede3a7445a52d01b96d940576c8233c76c

Analysis

max time kernel
83s
max time network
94s
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

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

$APPDATA/EaseUSOS2Go4.0/os2go/bin/Thread.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-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31090321"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\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-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "2389097648"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\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-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456"	iexplore.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 244 wrote to memory of 336	244	MSOXMLED.EXE	77
PID 244 wrote to memory of 336	244	MSOXMLED.EXE	77

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\Thread.dll.xml"
1⤵
- Suspicious use of WriteProcessMemory
PID:244
- 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\Thread.dll.xml
  2⤵
  - Modifies Internet Explorer settings
  PID:336

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

Loading Replay Monitor...

Downloads

memory/244-0-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-1-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-3-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-4-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-5-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-6-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-7-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-2-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-8-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-9-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-10-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-11-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-12-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-13-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-14-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-15-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-16-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-17-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-18-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-20-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-21-0x00007FF99FD50000-0x00007FF99FD60000-memory.dmp

Filesize
64KB

Download
memory/244-23-0x00007FF9DFCC0000-0x00007FF9DFEC9000-memory.dmp

Filesize
2.0MB

Download
memory/244-22-0x00007FF9DE7A0000-0x00007FF9DE85D000-memory.dmp

Filesize
756KB

Download
memory/244-19-0x00007FF9DE7A0000-0x00007FF9DE85D000-memory.dmp

Filesize
756KB

Download