21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2

Analysis

max time kernel
150s
max time network
146s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 07:35

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General

Target

21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
Size

43KB
MD5

85ce39e5502a41d4d0aba6b06056fed4
SHA1

3fbf4c812901ef6edd5c75c2fac84b7384d31056
SHA256

21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2
SHA512

227fb7390dc92b61d36dcb421c23ea6623e515b18f6fb8dda7a9f13d11477ba9d131cd59710968e4de063bfa0aa3c30ec9ffba1e6d802b18af7a87ce6387b83a
SSDEEP

768:JpzH9DwrsRhGJMfllLfapMmQIXfWbw7MLiQ+ylgmVhrt3RXmXH4:Lr9DwqoJqLfa2IXuEwR+yltVlXmXH4

Score

8^/10

bootkit persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1948	svchosts.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/748-56-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/files/0x0007000000005c50-58.dat	upx
behavioral1/memory/1948-64-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/memory/748-66-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/memory/1948-68-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/memory/748-69-0x0000000000400000-0x000000000041E000-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

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\windows\svchosts.exe	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
File opened for modification	C:\windows\svchosts.exe	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe

Modifies Internet Explorer settings 1 TTPs 34 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e08fc02427ccd801	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "370357083"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{471224F1-381A-11ED-B531-52E8C5FCC7C7} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000d3b98f5693c0d24b85f349229339c59c0000000002000000000010660000000100002000000020ec70c0347971eee3054c4fde0e831c1b6bb1c84653af0bc031cf9ed465a89b000000000e8000000002000020000000a4f678500203692f7a5c4ad58458a62bd79d3aeca1b500b9f99c8974d13c2f7e20000000c1257b622cb475b9018ba8c68b460bab4021faa2942384c780348f20d3a6520f40000000eb3b1a98a735592a392533697250569b28a2aa9201f1b4ad691532e0ab6a92b844d8d13d87d52af9d3a74d8f65460f1bc84ea0acaf9afb75977ad957a8e18188	iexplore.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1560	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
1948	svchosts.exe
1560	iexplore.exe
1560	iexplore.exe
1104	IEXPLORE.EXE
1104	IEXPLORE.EXE
1104	IEXPLORE.EXE
1104	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1948	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	27
PID 748 wrote to memory of 1948	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	27
PID 748 wrote to memory of 1948	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	27
PID 748 wrote to memory of 1948	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	27
PID 748 wrote to memory of 1560	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	28
PID 748 wrote to memory of 1560	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	28
PID 748 wrote to memory of 1560	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	28
PID 748 wrote to memory of 1560	748	21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe	28
PID 1560 wrote to memory of 1104	1560	iexplore.exe	30
PID 1560 wrote to memory of 1104	1560	iexplore.exe	30
PID 1560 wrote to memory of 1104	1560	iexplore.exe	30
PID 1560 wrote to memory of 1104	1560	iexplore.exe	30

C:\Users\Admin\AppData\Local\Temp\21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
"C:\Users\Admin\AppData\Local\Temp\21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.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:748
- C:\windows\svchosts.exe
  C:\windows\svchosts.exe auto
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1948
- C:\progra~1\Intern~1\iexplore.exe
  C:\\progra~1\\Intern~1\\iexplore.exe http://jianqiangzhe1.com/AddSetup.asp?id=137&localID=QM00013&isqq=3
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1560
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1560 CREDAT:275457 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

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

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\JTVZWSRT.txt

Filesize
596B

MD5
37a0b803314e232d3df03c38fe1074a8

SHA1
c545e0e438327ca2408a8bff93feed0bf1607049

SHA256
dfde34c6ef6239b1d9cf2cca802dca7d4f699d859ad781e38c355d55af914b41

SHA512
9232505e135d21ebd1d7cfd0c8e70fd54c53543726f896c65026e4015240a1d389274a551188dd19b3d0f9d1c741cecccb772917136d51df3ee35b0839b62d3a

Download Submit
C:\Windows\svchosts.exe

Filesize
43KB

MD5
85ce39e5502a41d4d0aba6b06056fed4

SHA1
3fbf4c812901ef6edd5c75c2fac84b7384d31056

SHA256
21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2

SHA512
227fb7390dc92b61d36dcb421c23ea6623e515b18f6fb8dda7a9f13d11477ba9d131cd59710968e4de063bfa0aa3c30ec9ffba1e6d802b18af7a87ce6387b83a

Download Submit
memory/748-67-0x0000000000230000-0x000000000024E000-memory.dmp

Filesize
120KB

Download
memory/748-56-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/748-62-0x0000000000230000-0x000000000024E000-memory.dmp

Filesize
120KB

Download
memory/748-63-0x0000000000230000-0x000000000024E000-memory.dmp

Filesize
120KB

Download
memory/748-69-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/748-65-0x0000000074FB1000-0x0000000074FB3000-memory.dmp

Filesize
8KB

Download
memory/748-66-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1948-68-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1948-64-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download