Analysis
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max time kernel
150s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
13/03/2023, 14:14
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/tianya0529/R3nzSkin/releases/download/v2.3.8/R3nzSkin13.5.6.zip
Resource
win10v2004-20230220-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
https://github.com/tianya0529/R3nzSkin/releases/download/v2.3.8/R3nzSkin13.5.6.zip
Score
1/10
Malware Config
Signatures
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Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\PhishingFilter iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 402aab7ba945d901 iexplore.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1184192579" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "385481879" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\MINIE iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\RepId iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1184192579" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{71AAB52C-C1A9-11ED-8FFF-72EDBB006969} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\RepId\PublicId = "{EF262320-EAB8-4107-9F19-291FA08B47BD}" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31020470" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31020470" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000_Classes\Local Settings iexplore.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe 1176 R3nzSkin_Injector.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1176 R3nzSkin_Injector.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1180 iexplore.exe 1180 iexplore.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1180 iexplore.exe 1180 iexplore.exe 1440 IEXPLORE.EXE 1440 IEXPLORE.EXE 1440 IEXPLORE.EXE 1440 IEXPLORE.EXE 460 R3nzSkin13.5.6.exe 460 R3nzSkin13.5.6.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1180 wrote to memory of 1440 1180 iexplore.exe 89 PID 1180 wrote to memory of 1440 1180 iexplore.exe 89 PID 1180 wrote to memory of 1440 1180 iexplore.exe 89 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" https://github.com/tianya0529/R3nzSkin/releases/download/v2.3.8/R3nzSkin13.5.6.zip1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1180 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1180 CREDAT:17410 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1440
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:696
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C:\Users\Admin\AppData\Local\Temp\Temp1_R3nzSkin13.5.6.zip\R3nzSkin_Injector.exe"C:\Users\Admin\AppData\Local\Temp\Temp1_R3nzSkin13.5.6.zip\R3nzSkin_Injector.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1176
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C:\Users\Admin\AppData\Local\Temp\Temp1_R3nzSkin13.5.6.zip\R3nzSkin13.5.6.exe"C:\Users\Admin\AppData\Local\Temp\Temp1_R3nzSkin13.5.6.zip\R3nzSkin13.5.6.exe"1⤵
- Suspicious use of SetWindowsHookEx
PID:460
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\39K1WZBJ\R3nzSkin13.5.6.zip.c4cb4mg.partial
Filesize989KB
MD5b8a184df370c7334ec62c3209cddd8be
SHA18e63828637a2d50fd1c67987bd3cdde869b70cde
SHA256d64039f1ab7e6e8d13884be5a4699ebc96b5cf94e08a79a0871993e258704f28
SHA512d19b23d462605149bc8e8e1aab884d17226805c502a61198babd763d849c44ff788d72b3f40a6d83d12cb81b9800cc2d62ae71c7a8019e889fd4b184da670ca6
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Filesize
989KB
MD5b8a184df370c7334ec62c3209cddd8be
SHA18e63828637a2d50fd1c67987bd3cdde869b70cde
SHA256d64039f1ab7e6e8d13884be5a4699ebc96b5cf94e08a79a0871993e258704f28
SHA512d19b23d462605149bc8e8e1aab884d17226805c502a61198babd763d849c44ff788d72b3f40a6d83d12cb81b9800cc2d62ae71c7a8019e889fd4b184da670ca6
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee