Overview
overview
7Static
static
3dc425d638a...d2.exe
windows7-x64
7dc425d638a...d2.exe
windows10-2004-x64
7$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$SYSDIR/$S...4_.exe
windows7-x64
7$SYSDIR/$S...4_.exe
windows10-2004-x64
7$PLUGINSDI...ns.dll
windows7-x64
3$PLUGINSDI...ns.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows7-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$TEMP/$_8_.dll
windows7-x64
6$TEMP/$_8_.dll
windows10-2004-x64
6Analysis
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max time kernel
94s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2024 17:57
Static task
static1
Behavioral task
behavioral1
Sample
dc425d638aaffd968f4d6c20d473d7d2.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
dc425d638aaffd968f4d6c20d473d7d2.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240319-en
Behavioral task
behavioral5
Sample
$SYSDIR/$SYSDIR/$_14_.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
$SYSDIR/$SYSDIR/$_14_.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win7-20240221-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240221-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral11
Sample
$TEMP/$_8_.dll
Resource
win7-20240221-en
Behavioral task
behavioral12
Sample
$TEMP/$_8_.dll
Resource
win10v2004-20231215-en
General
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Target
$TEMP/$_8_.dll
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Size
380KB
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MD5
9ea41d845f06f65cc4f18c0c60a4a69f
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SHA1
c3d119060bb7273798571d790d49cc1a2c890204
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SHA256
edbe235ae1344856534b60a92a08d69ce8ef18c4656853340acbad2f4e70326c
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SHA512
12fc02282533df30cf6ca5ca5973d746d9a4064877287a7247cfd39cdcb4dbf132526188d6f97033777e38431e3c4c76d54a291163c8e4241f0bffc4513727e0
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SSDEEP
6144:W5vuZ2WFasIULOmdIiyPuseKUINW5hqrSzAxbkDyl9OIzNIk/qfhCIq2igR/5:Avu9F1IULOmyPusfs54SzAxbkDyOIzNC
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\qekbnsglzrvboxt = "C:\\Windows\\System32\\regsvr32.exe /s \"C:\\Users\\Admin\\AppData\\Local\\Temp\\$TEMP\\$_8_.dll\"" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{50A65C25-6D73-39C8-DE52-8520CD1776DB} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{50A65C25-6D73-39C8-DE52-8520CD1776DB}\NoExplorer = "1" regsvr32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1290765778" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e010884db97bda01 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\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 Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1294672293" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31095737" IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000002064eb03e9d3c64b8e263ff834711d9a0000000002000000000010660000000100002000000015d9393cd5e1e47bdd71179b4cc504bf6ccb306e6328db460852792231d4e2b8000000000e800000000200002000000096c928f445bb3d234376e67f512af2755327c3746d750f4b424f6a0cf3ca05eb20000000d45b04e14ba648ab182a56b664eb853c45a0f6181202df29e9efaa98a9d141a240000000c8db93df60ded6b815613f4ba0042c8410d6da019c895bccbc6bb717c6eb67d77e7295c793c01ae616ac968d7060939aa93cd8c11b2d57d65e286100e62da041 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{785D731A-E7AC-11EE-BD28-4E55496B34AD} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31095737" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31095737" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1294672293" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31095737" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000002064eb03e9d3c64b8e263ff834711d9a00000000020000000000106600000001000020000000e328c0c9c462e8c67550aaf6c668d31dc1969c1278ff9e01ae58a50444f04dd2000000000e8000000002000020000000e1cb7cc6c70e6cb2be968192d00698d8e2a30615034f71ec0798c4b7a6fbe4d7200000006d8aed716762d9fc251f540e7f63a6bf6398b5a1d91b2d3838c72f657407a69d400000001675a58f37eb19a96312e6026e9df041bc5c661380d0df296cac91420e53919f44c3f7220e023a2a6b0a72740d1482ace450f2e18bfc370575f72526dd0d45ae iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = d03c8f4db97bda01 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1290765778" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "417808818" iexplore.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50A65C25-6D73-39C8-DE52-8520CD1776DB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50A65C25-6D73-39C8-DE52-8520CD1776DB}\ = "freedomltd browser enhancer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50A65C25-6D73-39C8-DE52-8520CD1776DB}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50A65C25-6D73-39C8-DE52-8520CD1776DB}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50A65C25-6D73-39C8-DE52-8520CD1776DB}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$TEMP\\$_8_.dll" regsvr32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4048 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4048 iexplore.exe 4048 iexplore.exe 4688 IEXPLORE.EXE 4688 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4784 wrote to memory of 4996 4784 regsvr32.exe 83 PID 4784 wrote to memory of 4996 4784 regsvr32.exe 83 PID 4784 wrote to memory of 4996 4784 regsvr32.exe 83 PID 4048 wrote to memory of 4688 4048 iexplore.exe 86 PID 4048 wrote to memory of 4688 4048 iexplore.exe 86 PID 4048 wrote to memory of 4688 4048 iexplore.exe 86
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\$TEMP\$_8_.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4784 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\$TEMP\$_8_.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:4996
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C:\Program Files (x86)\Internet Explorer\ielowutil.exe"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding1⤵PID:5092
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4048 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4048 CREDAT:17410 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4688
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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\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD56f11b9401e2b512faaad278ff27f8e5a
SHA13a8a8ed2f92c4165059e8d11c70ed0140cc99d3b
SHA256abbacb77eb59b95f5b3b50eeec27dbd6e689bc98f36a4bcdbd5a9c583fbad122
SHA512569744b04e01f935dbfa776b6d55aa43fbb24fc770b4996c00dba788791c7eea05ee5d9ab7eb48b45996e1fa29062717c13b0c3c6704211f7eed7e0b552aaa0c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5b92775f5ea0aa2d205108029e25c1863
SHA15dfbfca5f9e0bb534d4c12a9549278ef46a46240
SHA25663ad6946c34cda3a363c620cc0c414f62708f8e20e3f9adf14e342bf729d34b2
SHA51295284dc74d43ce3424da5124c8ae79cb4dfb0f32a607dc7cc823deb849af79130bf3948e38b1d3ef231a50c7ab1413d0f1dd52f72ecee3c4d85b9431d49d65f9
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d