Analysis
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max time kernel
118s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
25-12-2023 17:07
Static task
static1
Behavioral task
behavioral1
Sample
Readme-˵.htm
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
Readme-˵.htm
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
U̷.exe
Resource
win7-20231215-en
Behavioral task
behavioral4
Sample
U̷.exe
Resource
win10v2004-20231215-en
General
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Target
Readme-˵.htm
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Size
2KB
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MD5
1a8bbc500c051a7c3548643ceff1e9d8
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SHA1
4809a35f50d25818a8ffbb295d45399a65dd2acd
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SHA256
733208a0d818e837762ae667c2d8ef0de8ecb5552c1f16561862a7bd2fc3ddb2
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SHA512
e0f699dbf1c4893b9a09dbf3b0a0caefdd508d160ab6655dbce3b56f5ded0d1ee57f75e352890bcb982790f7c5b30e57fb2a5bbc1c0c7de4ecc3970bd31af61e
Malware Config
Signatures
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000008dcd4c448ce8fb42a8f577f49cde6d300000000002000000000010660000000100002000000090171669defc01cc5898d57adae6eb4a7a9907a3696adafa20df5a270c025878000000000e8000000002000020000000bbc865e556eb3345b7c140651998b5f935d244f8ccae52e41b6a9b02cbf1779a20000000b1b75ea1d28fc4a1553143707db3c6fb2e38d52da65e42efd592035fc479b97140000000200de60abfd49c00bcfe9469cd6cb7c9c2c5a7a8d22e9ff8de0b9483dcdc6c3f35c81b392c3cf1b850d05646848abed5eb29d1af744340ce9321fdf7baf81b16 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Size = "10" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\SearchScopes iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{ABCA7791-A5E6-11EE-92F6-EEC5CD00071E} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a08e9474f339da01 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "409973941" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Enable = "1" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Factor = "20" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\International\CpMRU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "2" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\International\CpMRU\InitHits = "100" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2548 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2548 iexplore.exe 2548 iexplore.exe 2808 IEXPLORE.EXE 2808 IEXPLORE.EXE 2808 IEXPLORE.EXE 2808 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2548 wrote to memory of 2808 2548 iexplore.exe 28 PID 2548 wrote to memory of 2808 2548 iexplore.exe 28 PID 2548 wrote to memory of 2808 2548 iexplore.exe 28 PID 2548 wrote to memory of 2808 2548 iexplore.exe 28
Processes
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\Readme-˵.htm1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2548 CREDAT:275457 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2808
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD50eea8591812dd654da9cbb073855a759
SHA197a787e0628f94b42e465d8c9da3784f87798f08
SHA25639bf12f6a822a93192189e88676220b6b3ae5c7903777a80a977718ca3bd94c7
SHA512e13413454f9f694079df50affaff376d3b618b55766ad6472f1c3907ccfbe6087502a644c79f7757e0d52cee7e9ef2a3ed2075e3ef24ab1c2894e4b66df4fb56
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD515b724aa5003463aca15e6e02a9f0659
SHA11c7aeecd2cb962d7cd11b8d33b743f80ed3b2046
SHA256f0d21026813f33b5ca4a5c9e2e6ce6e7bd6ee5cb94b521f48e954155af4454fa
SHA512ce2c514de03a3b2d6ca8720779d0cdf8a92466a65b88a2da563a39b384167b9b9d6b16abfaf77c903245335f9dfc1acfa3414f2242922ae9f7a959bbe4844f4f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5668033f00752e5ccb731b582da13962e
SHA1c2d9c13e810299ae1ef2b665507d0180d19ed5ff
SHA25659d2c7bb09b8c326f4f4f8d0a10e66f1c5341caa611705d905be88a10f62a44b
SHA512d63341cc817f3d101548eb6741420ba695bdc3a95abb0f7d28475da096d33c4f7167c44cfef044ec97d4690b692515b257f54323a16af43790ec3e874900b6fb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5a3b1d01eff15bd57c6ac7ab889a47b08
SHA12cb19f5aeb8b31d94cc75028b6191fdbe74395b2
SHA256d4a0e536256c4b6387d1e87812a02e07f8ac762496816fd12110c673d5ebe275
SHA51219cce4079d7879db2228c070640c4608d323995adca51d8a6dcf7b3007d474449a3b16c02d510c172bbdd67c35be7fa3cf810f2798b4ddccdd4b3ca5b9bfd7c0
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5278f3eee547c13661c52bf965b4ed6f3
SHA13435cf89b616cc000407c44746a06e1d3c8e8462
SHA25658538621c858dfc85d4cdabf5b9858ca36ea48a9dbcf3d1ffaf1f7b9cfbdb026
SHA5128fb2085849dafd8a462175c81e0aa74b4d647b5f5e7e0273f192d4c27a980ef2a8f58ef63812d3c94ac39f4bbec21fd9a5bb02e13e054c56bfdb9c84c8873cff
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD508f109b582d1fc62e54d14d431b31706
SHA1e73b28ae82004447e992137d608124d011e739a4
SHA256abb31b2d6029fc1c479efcc2baa3fc3961d362953437afbc303d59c44fcd2151
SHA512700cc24e229be50f558984b95fb473e27338d144a0df5e685968517dfb59395e6afc9d9f85a3f834b6236b23f5f9e8315451f233162d1038c6d4d1d3f08f1077
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5810dd242bf59b782955a0b2ad9b98f73
SHA127a1c55c0425e18cfe2fa9a1ddc717a5efd2858f
SHA25663d4d11002fa9441003ccfdf0e8f4357102ff30ac9e9af59a0bb459cd54e8085
SHA512e8eadf08b19bb12a8d4627eab1f9871ae93d5c4657a4d2e4115855c59ba45175710a44d557488dcce84eedb45c19521de971939e226da5fdb8157e0bd538b895
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD524d2b7a4c4fd515b90a55b7f3872d4e3
SHA1d9eb5ce65302cc8fa1f12fc2aa198459fc9db0ca
SHA25645a88840a89b9cb60efeeb9f8ee79bce0d524387fdc20e23e51c89944b05b4ab
SHA512804b53c6b610f2953b1da9ca4ffda077dad54c4faf816ba9d7802f78d9e5ca65b03b41b9f710243fe777d23eb756c4acf421518c5bf32263f74270c561618032
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD582eaf0ccb3d6a83011c997bde4448b36
SHA1813f5e1337a436d478f711df56e6b8c184b2f055
SHA2567e8e9918a93c544a9701fc144260e24dc5a30d9e82477c44521571b07429db16
SHA512f3e022c527e82f3a6de72b8fbd311e451b52956877493cf6c2eb1a93a63f64708358403d5f0775610f07b790e9373aa39541b5c6c5b87facfd60b5f193376ae6
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5e8b2bf9b1816368629ab68172b157c0a
SHA14614a9db89000da475178315c6df55b516cb56f6
SHA2564a55207d720143eff03f74b7b8a40b875a79c9e786f62928eaeeaddcc1626963
SHA512d6bb957c5a28325f02ad1b94ec0a4daa73cc4f32dfa774be0f7b3754c1826ac8af4f6cb8ecf3d52a633c5e5dceb6fb2dac7baf5704b6487ce2404cddcb08c814
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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Filesize
171KB
MD59c0c641c06238516f27941aa1166d427
SHA164cd549fb8cf014fcd9312aa7a5b023847b6c977
SHA2564276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f
SHA512936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06