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Analysis
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max time kernel
82s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
21/11/2022, 10:38
Static task
static1
Behavioral task
behavioral1
Sample
9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll
Resource
win7-20221111-en
General
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Target
9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll
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Size
388KB
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MD5
20d11451f2c1dafb5023993e397f9a80
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SHA1
5be6f1bece4a0422adb05f27e1c214feba093554
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SHA256
9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e
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SHA512
3307f8969cfc67ee66349e1db742bb890c374facb1757bf1b82c38b6f66bcd5ba9badcd232903dbecccf29cd71520cc30dbea0769b2d2b1e3a11c043ec686c80
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SSDEEP
6144:uIrIshB5Esv4ULo6bVGTraIYteLLqsOQ9jUG9+45Vrr58/YVGqq0IjeF7KtB:frIshbtv4ULTZGPysOGL5Nd0lL0jI
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1984 rundll32Srv.exe 804 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x0007000000022de8-134.dat upx behavioral2/files/0x0007000000022de8-135.dat upx behavioral2/files/0x0004000000022def-139.dat upx behavioral2/memory/1984-138-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x0004000000022def-137.dat upx behavioral2/memory/804-140-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxF9E5.tmp rundll32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 3304 1612 WerFault.exe 82 -
description ioc Process 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 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\LastCheckForUpdateHighDateTime = "30997909" 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\Recovery\AdminActive 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 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\LastCheckForUpdateLowDateTime = "1901734978" 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 (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9CD8C60D-6988-11ED-A0EE-7A46CE8ECE48} = "0" 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\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ 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 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\LastUpdateLowDateTime = "1901734978" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1914861038" 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\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997909" 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\Main\WindowsSearch 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\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997909" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375792074" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe 804 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3876 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3876 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3876 iexplore.exe 3876 iexplore.exe 4616 IEXPLORE.EXE 4616 IEXPLORE.EXE 4616 IEXPLORE.EXE 4616 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3704 wrote to memory of 1612 3704 rundll32.exe 82 PID 3704 wrote to memory of 1612 3704 rundll32.exe 82 PID 3704 wrote to memory of 1612 3704 rundll32.exe 82 PID 1612 wrote to memory of 1984 1612 rundll32.exe 83 PID 1612 wrote to memory of 1984 1612 rundll32.exe 83 PID 1612 wrote to memory of 1984 1612 rundll32.exe 83 PID 1984 wrote to memory of 804 1984 rundll32Srv.exe 84 PID 1984 wrote to memory of 804 1984 rundll32Srv.exe 84 PID 1984 wrote to memory of 804 1984 rundll32Srv.exe 84 PID 804 wrote to memory of 3876 804 DesktopLayer.exe 86 PID 804 wrote to memory of 3876 804 DesktopLayer.exe 86 PID 3876 wrote to memory of 4616 3876 iexplore.exe 88 PID 3876 wrote to memory of 4616 3876 iexplore.exe 88 PID 3876 wrote to memory of 4616 3876 iexplore.exe 88
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3704 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9ac30e8cd469b32168786c2448c8f196debfbb111a6def172f36b4d64787f93e.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1984 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:804 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3876 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3876 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4616
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 6403⤵
- Program crash
PID:3304
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1612 -ip 16121⤵PID:3780
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5cb295ed32b0acd9eac87bcc961fb315a
SHA1a580f2d38c9d1611e25b6aaa3d79b54eb34d3ebe
SHA256980abeaa872503211925db8acf8bdcdff0bc3c6deb2182fd698f6a444d2625be
SHA512974f48bdfb8ea90a49cfa25cacc98c9a145702f4e4967dd6ffddd5eaee6144189499682e80b342708e04f812006314b04e5715492170d0f63c7b0530e9cd399a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD59c2c33d8d137955788a7d0643b2648af
SHA10f431a5085637265ececc9d1ae0f542ad392eb0f
SHA25621e700076a749d70602046960dca2adb5335fb0ca558114dcbb789beceb172bd
SHA512c5f8b647960d8ca08498dd6ce2682080be7720195028cb6799dbc92e5976a3498238a7b58e84b2496ecc22944dba06fb8feb3f3ab9ec7677a15224f1fb53db6e
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a