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Analysis
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max time kernel
152s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2022, 07:35
Behavioral task
behavioral1
Sample
21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
Resource
win10v2004-20220901-en
General
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Target
21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe
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Size
43KB
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MD5
85ce39e5502a41d4d0aba6b06056fed4
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SHA1
3fbf4c812901ef6edd5c75c2fac84b7384d31056
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SHA256
21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2
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SHA512
227fb7390dc92b61d36dcb421c23ea6623e515b18f6fb8dda7a9f13d11477ba9d131cd59710968e4de063bfa0aa3c30ec9ffba1e6d802b18af7a87ce6387b83a
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SSDEEP
768:JpzH9DwrsRhGJMfllLfapMmQIXfWbw7MLiQ+ylgmVhrt3RXmXH4:Lr9DwqoJqLfa2IXuEwR+yltVlXmXH4
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3880 svchosts.exe -
resource yara_rule behavioral2/memory/4836-134-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x0002000000022dd9-136.dat upx behavioral2/files/0x0002000000022dd9-137.dat upx behavioral2/memory/3880-140-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/4836-201-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/3880-216-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/4836-219-0x0000000000400000-0x000000000041E000-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.
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 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{82BAB389-3809-11ED-A0EE-E6AF42CF752C} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d79060000000002000000000010660000000100002000000085c02ce92190e3efb90f6755ab4b6fa65611e8256f9dce5aa0b961d4e7de9f51000000000e8000000002000020000000c28a9fa83e8951ae3ea101c1151fc140734554ec3f136429b5751f7ebaf3dfea20000000e37f72746cfd2a0d8e11f84d56ecb9a5ae70bf74cdae56b5364b423d0c135f1140000000f727861cd2cd0ae311e4f46d0d114af9c4e6fde58d0259821f75b9828cf8dadd07f2865ad61f000d2762069da126a0ab1700f735569d154041970d0a80749122 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d7906000000000200000000001066000000010000200000003fb7732c19eefcade248b15cd4ae5ba519701011c044ee9d7a56354dbd2ece2f000000000e8000000002000020000000d2b671887a41abdfe3b12e449d6694fc946178ba20b4b124ab33c84743f1a3ae20000000127ef032d93a0bb7cf9b87e979bd37e75c2ef1ed8a7d71b285fbe2d5b5bd8ab3400000006030c8cbabd5a3e269a6afcc6f2c2bd49b5a0fb5cd2ce01f1f48d1dd42e09790cb723f5b6e1f0af0660429f2f2bdfeb352d3ac5b4f8bb23714370758a03316cf iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 40f8555a16ccd801 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1470629981" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1489962966" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "370349879" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30985238" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30985238" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30985238" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1470629981" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e01d7c5a16ccd801 iexplore.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2808 iexplore.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2808 iexplore.exe 3880 svchosts.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 3880 svchosts.exe 2808 iexplore.exe 2808 iexplore.exe 3052 IEXPLORE.EXE 3052 IEXPLORE.EXE 3052 IEXPLORE.EXE 3052 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4836 wrote to memory of 3880 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 84 PID 4836 wrote to memory of 3880 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 84 PID 4836 wrote to memory of 3880 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 84 PID 4836 wrote to memory of 2808 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 85 PID 4836 wrote to memory of 2808 4836 21fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2.exe 85 PID 2808 wrote to memory of 3052 2808 iexplore.exe 86 PID 2808 wrote to memory of 3052 2808 iexplore.exe 86 PID 2808 wrote to memory of 3052 2808 iexplore.exe 86
Processes
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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:4836 -
C:\windows\svchosts.exeC:\windows\svchosts.exe auto2⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3880
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C:\progra~1\Intern~1\iexplore.exeC:\\progra~1\\Intern~1\\iexplore.exe http://jianqiangzhe1.com/AddSetup.asp?id=137&localID=QM00013&isqq=32⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2808 CREDAT:17410 /prefetch:23⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3052
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5520071a63bb5e2038486cd0ce14055b1
SHA1752cfb61bbe3ae1e2c2609c53aeee510661a59ed
SHA256f8a989e9cf1fe0f0000c795537122a3c727e3b570b66582bfb62d9bbae4b20f8
SHA5126f0131c9e0943c6a13d52a7525e1c592c95db868bf2dd21a8a37254150a239748985cc31518d0c4844bebfc5613feee6857b5debfbbbd6ed4539cd5e494ebbb2
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5779fe4f1da64e35ceee041cd39768855
SHA1f6397c37d80a418a7f840fbe17c447e6c1e13388
SHA2563b7485201ec9089180f3fcdfc2061524507f820e1eec8cfa7114b9aac5ecef80
SHA512d9957cf2e61fa9a85c72509eb60c86d0c398cc2404390b8f4b0e728fcd2052450b9b5160eab5142a1b411f583ced8abba887eca36e2827daf8d8c84d1d3b2ff2
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Filesize
43KB
MD585ce39e5502a41d4d0aba6b06056fed4
SHA13fbf4c812901ef6edd5c75c2fac84b7384d31056
SHA25621fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2
SHA512227fb7390dc92b61d36dcb421c23ea6623e515b18f6fb8dda7a9f13d11477ba9d131cd59710968e4de063bfa0aa3c30ec9ffba1e6d802b18af7a87ce6387b83a
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Filesize
43KB
MD585ce39e5502a41d4d0aba6b06056fed4
SHA13fbf4c812901ef6edd5c75c2fac84b7384d31056
SHA25621fe91556d24f8c8704c6777abe75c70ef36c5c2a33b7020ce479af6111eddd2
SHA512227fb7390dc92b61d36dcb421c23ea6623e515b18f6fb8dda7a9f13d11477ba9d131cd59710968e4de063bfa0aa3c30ec9ffba1e6d802b18af7a87ce6387b83a