40c92384d321d4728f5f8a7e86066069313b91ed9368f0fa50a55b6ec7f72a25

Analysis

max time kernel
1745s
max time network
1155s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
05-08-2024 00:37

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General

Target

KRNL-REBORN/krnlss.exe.xml
Size

202B
MD5

0ed4b3831ff5e91dff636145f68aac4c
SHA1

2d1140812945dc1b9e400a88c911803639cb2e49
SHA256

03962ae5a55dfc70e2717771a9a7aa37b956b2c5b4c62e3cff9fe24360250347
SHA512

4039d0272678777ba6fa496baf875050bd4c29352fffd37af8c3c07fb2abeedc54ba04a3dd085b491d848e951ccfcbd67ec7ba50a10ec0c624df45e98c18bf1c

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 29 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31123231"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\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-1-5-21-4272559161-3282441186-401869126-1000\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-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "3513941767"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

MSOXMLED.EXE

description	pid	Process	procid_target
PID 4224 wrote to memory of 3124	4224	MSOXMLED.EXE	82
PID 4224 wrote to memory of 3124	4224	MSOXMLED.EXE	82

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\KRNL-REBORN\krnlss.exe.xml"
1⤵
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\KRNL-REBORN\krnlss.exe.xml
  2⤵
  - Modifies Internet Explorer settings
  PID:3124

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/4224-0-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-2-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-3-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-4-0x00007FFF24483000-0x00007FFF24484000-memory.dmp

Filesize
4KB

Download
memory/4224-5-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-1-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-6-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-7-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-8-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-11-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-10-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-9-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-13-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-12-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-14-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-19-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-18-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-20-0x00007FFF243E0000-0x00007FFF245E9000-memory.dmp

Filesize
2.0MB

Download
memory/4224-17-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-16-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download
memory/4224-15-0x00007FFEE4470000-0x00007FFEE4480000-memory.dmp

Filesize
64KB

Download