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Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26/12/2024, 03:52
Static task
static1
Behavioral task
behavioral1
Sample
86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe
Resource
win7-20240729-en
General
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Target
86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe
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Size
1.0MB
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MD5
19e994fc4c9991ad0bf52707bd6b4f78
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SHA1
6c157c7008a9fe5da59a82bad9145ef06a060066
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SHA256
86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61
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SHA512
0d90de9ac90764cc36328ab3c14dbcb3e287329f3c710dd11f095dcab33d494c7561d2fa154a74749a327e8cbe8624bf972001fca405f768b0bd3c84129a534c
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SSDEEP
24576:yGt+igEhxI9qg8RVMdEU5vNYGp7oS7C+/kY6:MWsqjzMdNNY786
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
pid Process 1424 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe 1656 DesktopLayer.exe -
resource yara_rule behavioral2/memory/1424-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000a000000023bef-3.dat upx behavioral2/memory/1424-8-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1656-14-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1656-15-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px8D8A.tmp 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3057909826" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151945" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441950147" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E1C4FFA7-C33C-11EF-B9B6-7ECF469E42CC} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3059628647" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151945" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151945" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3057909826" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151945" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3059628647" IEXPLORE.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe 1656 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3536 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3536 iexplore.exe 3536 iexplore.exe 2944 IEXPLORE.EXE 2944 IEXPLORE.EXE 2944 IEXPLORE.EXE 2944 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3772 wrote to memory of 1424 3772 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe 83 PID 3772 wrote to memory of 1424 3772 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe 83 PID 3772 wrote to memory of 1424 3772 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe 83 PID 1424 wrote to memory of 1656 1424 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe 84 PID 1424 wrote to memory of 1656 1424 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe 84 PID 1424 wrote to memory of 1656 1424 86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe 84 PID 1656 wrote to memory of 3536 1656 DesktopLayer.exe 85 PID 1656 wrote to memory of 3536 1656 DesktopLayer.exe 85 PID 3536 wrote to memory of 2944 3536 iexplore.exe 86 PID 3536 wrote to memory of 2944 3536 iexplore.exe 86 PID 3536 wrote to memory of 2944 3536 iexplore.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe"C:\Users\Admin\AppData\Local\Temp\86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3772 -
C:\Users\Admin\AppData\Local\Temp\86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exeC:\Users\Admin\AppData\Local\Temp\86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1424 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1656 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3536 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3536 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2944
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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
MD573d8dd7eaa8896905e31f1960f51ece1
SHA1164e031603e75d95091220c5ff0d695547f6d3ae
SHA2569ff75ab638fe252bd0d04aea3f0ce38270ffc8df5db9399f9ea45aaef196dddc
SHA5124879585482992d7ea3ee02775b74592b06daab32a63dc7700dd4da40c45a524f3bcfc2beff928a85563f09ad0438be5b3e458bc3d0cd08ad146d416fec014a04
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5fc49380a4cd662f1bbb3b30c55223489
SHA185802d45a7c00055121c45a74b291030b56ac657
SHA2567e2185fe3910d79cfabc40b956bf16b08b747fe1ee88261d3501667724537c70
SHA512fa728f2b3afea61a14bd81ea7777adf69bada189178733f4280258e92d2d57c26db82f6645587e7e8207ab4af75ed73cae67fe625f4128131c85a8a76769d5ba
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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C:\Users\Admin\AppData\Local\Temp\86fb9e21a026067342c9a95e2d21860f365c17f9f523a8b9827dccc441ca9e61Srv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a