Overview
overview
10Static
static
10TekDefense.exe
windows7-x64
7TekDefense.exe
windows10-2004-x64
7index 2.html
windows7-x64
1index 2.html
windows10-2004-x64
1index2 2.html
windows7-x64
1index2 2.html
windows10-2004-x64
1index3 2.html
windows7-x64
1index3 2.html
windows10-2004-x64
1ransomware.exe
windows7-x64
7ransomware.exe
windows10-2004-x64
7tekdefense.dll
windows7-x64
10tekdefense.dll
windows10-2004-x64
5Analysis
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max time kernel
73s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
27-03-2023 09:37
Behavioral task
behavioral1
Sample
TekDefense.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
TekDefense.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral3
Sample
index 2.html
Resource
win7-20230220-en
Behavioral task
behavioral4
Sample
index 2.html
Resource
win10v2004-20230220-en
Behavioral task
behavioral5
Sample
index2 2.html
Resource
win7-20230220-en
Behavioral task
behavioral6
Sample
index2 2.html
Resource
win10v2004-20230220-en
Behavioral task
behavioral7
Sample
index3 2.html
Resource
win7-20230220-en
Behavioral task
behavioral8
Sample
index3 2.html
Resource
win10v2004-20230221-en
Behavioral task
behavioral9
Sample
ransomware.exe
Resource
win7-20230220-en
Behavioral task
behavioral10
Sample
ransomware.exe
Resource
win10v2004-20230220-en
Behavioral task
behavioral11
Sample
tekdefense.dll
Resource
win7-20230220-en
Behavioral task
behavioral12
Sample
tekdefense.dll
Resource
win10v2004-20230220-en
General
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Target
index2 2.html
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Size
291B
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MD5
d49409921bb8cd4bdf277752bc7291af
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SHA1
129a86e978f9ae72fc1714757289675bd18ad54c
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SHA256
a9ae4f9ab97c9ab2158ea0594bfec1db6be0ddb7b9605c228c2950c0ac9484f5
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SHA512
7bfbbc1d781b0efef75ee5fe438969a9c0f3fc9e42b843a4253fd9d67f02ab9c92900edb79a069de360033618260fd288e638980164e6afd8a88351b1a24402e
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "386682023" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 20fc6ca4a060d901 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{BFBBF41A-CC93-11ED-9F77-6A8031F758F8} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\IESettingSync IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31023264" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2510642394" IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000038a9e23718fe574b84afdc36f043bb4c00000000020000000000106600000001000020000000a8cb50d966cd4cb1f8478f8d565545db6427d90aed382c4742fe7319b03a36cd000000000e8000000002000020000000eb3a9b269367394711ba43ea62f1d2fdf67c859d09b344856d646a47fa518a4b20000000198da7bd4aa2393c4787e2bca0e42ece52f99975deeed410a20bf5e5389b28a340000000c8022ac182f23a5ef4027996022bb8e50ab141e1f142c94cf6374c7a7eea7178196f40ffb19ff5003b43d833a4fdfeb86b07fd8ee877d7909bcc58ecb401acb8 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 401561a4a060d901 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2486894113" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31023264" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31023264" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000038a9e23718fe574b84afdc36f043bb4c000000000200000000001066000000010000200000006c043d5cd129d207901b1ae8d47c24a29de522910d505895a339fabe2d4dc88a000000000e800000000200002000000016ad9ea4a1d4f3d99f99d3f2b028a0671cb65b3b4012098a5f54dff656e06d0e20000000dbda0d20de13fb198c9fb867f1dee25e10f78ae859eee5601bfc0d72a134ad624000000077fe1b121607b906ff73e776b8728e28366df95f4cddd1a5207da600728776e02895e8c6486e8bba3abd685de8613cd1befce9b4953e26496444d72cb72e5f80 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2487048569" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4324 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4324 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4324 iexplore.exe 4324 iexplore.exe 2868 IEXPLORE.EXE 2868 IEXPLORE.EXE 2868 IEXPLORE.EXE 2868 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4324 wrote to memory of 2868 4324 iexplore.exe 84 PID 4324 wrote to memory of 2868 4324 iexplore.exe 84 PID 4324 wrote to memory of 2868 4324 iexplore.exe 84
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\index2 2.html"1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4324 CREDAT:17410 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2868
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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
MD5f9eeb08fe84bc838ae6ac49893015c9b
SHA1529791696d3d8044dfb4dc0bbc5df47b4f5ed1a7
SHA2568effa7195753f0aa5c991f18df5866aed1e6688f8e484e47b6ecde0e2916d958
SHA5127f269c53a566998c1e3859eaaf96272224326e8959c86ad381869c2ebc6039518f74f3e4cbb71cb14d476ff4066d86705647fc60a0724f20ae07b0e1a51a3a4c
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize434B
MD5b86b92b56e54e6479ccd808a4711eca1
SHA107ec69030e7a74175abe0f44d06d74b024ff222e
SHA256b25d58a40faa6fdc8aeffd867148bfc9845016a559f583d168039ccf22dc9b52
SHA51219bafb8f51a86defd43f7a39cb0ff40a6092b456837cf67609be74fae4d2d681fa29e4f3c0df5d2609232ce41cd4e91328c30297e38cbf5bc611f1ecf2357562
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee