7b947eb46d4262a73c6b8d7f2c81396c24ad968a0dd9a766fc8e5954c32e0088

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
11/01/2024, 09:08

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General

Target

531a9df44e228da94c32d332720a175c.exe
Size

104KB
MD5

531a9df44e228da94c32d332720a175c
SHA1

f7a7ce2930b852552c8e3cf6b717eb17012dc795
SHA256

7b947eb46d4262a73c6b8d7f2c81396c24ad968a0dd9a766fc8e5954c32e0088
SHA512

de1b83115d1e29f91fff37d984aaee0b2d94194c6d839e8c251ebc26bbd258e3e155689aa6e00a2d1b48f0832620b5e91516d65cc83e47edeca500a62f7d9bb0
SSDEEP

1536:e/JZqulpodsUitz71NQ9wYHZO3D8DzgJ8r0:e/1wd5ozjQ9wYHZOIs8r0

Score

7^/10

bootkit persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1488	winlogon.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2100-0-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/2100-65-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/1488-91-0x0000000000400000-0x000000000041B000-memory.dmp	upx

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	531a9df44e228da94c32d332720a175c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\winlogon.exe	531a9df44e228da94c32d332720a175c.exe
File opened for modification	C:\Windows\winlogon.exe	531a9df44e228da94c32d332720a175c.exe

Modifies Internet Explorer settings 1 TTPs 39 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3763057219"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000015a2f750fe9ee1479ecf0c8cfb11934c00000000020000000000106600000001000020000000613bc7cea1e86f9060d3d772ac2d661202f280a22b40e9edb2396b6ba84c815f000000000e8000000002000020000000e9ed847c955b25066b2a31e9e6c9646b617b57156cf5f9c70c6565228c08214a200000002d8481e1d7031d6b90c1faf570abed03c6aa1097f724c5c8aaa4e563c5f31f1640000000559fe5ac37259c627441095d256ce82f3b433462fdbb1f1456ab673c8d1355a0a1f78fec66b3081737a385f52b55ed82462fad24ccac7fd19e8be493a5b7ff93	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000015a2f750fe9ee1479ecf0c8cfb11934c00000000020000000000106600000001000020000000d6eec0f8a7c2b4c1e84cd23f73e9ee953874b129e1965fbe2903551d7fa7f2be000000000e8000000002000020000000dd0bfc78eaf74bca55536ce70e349a73f605b811260bfe173c11dfae4c46ad8420000000ed8148d336efa61b1d17d34b9f5c1e15cddf14a76fc580ca20ff565e59a25aef40000000344746c434c75339f052f84c88d57e5c90fcca609079ad3e358807c052811648438a4182aab30add0659703e000cfeb58428ed812255e9918031013cdcb0d847	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 306d15e26d44da01	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3761807310"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{0B1EA463-B061-11EE-A0B6-6207E08AD8FF} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31081581"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31081581"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "411729110"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31081581"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31081581"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3761807310"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3763057219"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 30fc12e26d44da01	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2100	531a9df44e228da94c32d332720a175c.exe
2100	531a9df44e228da94c32d332720a175c.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2136	iexplore.exe
1488	winlogon.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2100	531a9df44e228da94c32d332720a175c.exe
1488	winlogon.exe
2136	iexplore.exe
2136	iexplore.exe
4888	IEXPLORE.EXE
4888	IEXPLORE.EXE
4888	IEXPLORE.EXE
4888	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 1488	2100	531a9df44e228da94c32d332720a175c.exe	31
PID 2100 wrote to memory of 1488	2100	531a9df44e228da94c32d332720a175c.exe	31
PID 2100 wrote to memory of 1488	2100	531a9df44e228da94c32d332720a175c.exe	31
PID 2100 wrote to memory of 2136	2100	531a9df44e228da94c32d332720a175c.exe	28
PID 2100 wrote to memory of 2136	2100	531a9df44e228da94c32d332720a175c.exe	28
PID 2136 wrote to memory of 4888	2136	iexplore.exe	30
PID 2136 wrote to memory of 4888	2136	iexplore.exe	30
PID 2136 wrote to memory of 4888	2136	iexplore.exe	30

C:\Users\Admin\AppData\Local\Temp\531a9df44e228da94c32d332720a175c.exe
"C:\Users\Admin\AppData\Local\Temp\531a9df44e228da94c32d332720a175c.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2100
- C:\progra~1\Intern~1\iexplore.exe
  C:\\progra~1\\Intern~1\\iexplore.exe http://houtai168.com:99/AddSetup.asp?id=01&localID=QM00013&isqq=3
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2136
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2136 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:4888
- C:\Windows\winlogon.exe
  C:\Windows\winlogon.exe auto
  2⤵
  - Executes dropped EXE
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:1488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\QSO8CY24\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
memory/1488-91-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2100-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2100-65-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2136-39-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-32-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-42-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-44-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-49-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-50-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-51-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-52-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-57-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-48-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-43-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-61-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-62-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-64-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-60-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-59-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-58-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-34-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-37-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-38-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-40-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-36-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-41-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-30-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-28-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-27-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-29-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-26-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-24-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-23-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-20-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-19-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-18-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-17-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-16-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-15-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-14-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-11-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-10-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-71-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-75-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-21-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download
memory/2136-13-0x00007FFCB0A90000-0x00007FFCB0AFE000-memory.dmp

Filesize
440KB

Download