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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
18/12/2024, 22:19
Static task
static1
Behavioral task
behavioral1
Sample
6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe
Resource
win7-20240903-en
General
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Target
6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe
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Size
376KB
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MD5
a951593191514e883bafd2adfd921679
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SHA1
974d5128fc2af8fa8fa20f732ffec8440c3656e1
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SHA256
6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0
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SHA512
7e394564e5d1352e8a5d12589118fde9d56ea0ea84f16cc3e56054fd94b6250ebf356b70b30538a07a36f8955904dee2473bcb312fd7325f5b1d568e81a1300d
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SSDEEP
6144:WGPEvbL4+tRfb9puSt/jbO/4MvJZju0WBD3HGYqkY/xPMuF6U:WpX4+tRfb9Z9O/pviBUkYNhF
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
pid Process 5024 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe 852 DesktopLayer.exe -
resource yara_rule behavioral2/memory/852-15-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/852-17-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000b000000023cad-12.dat upx behavioral2/memory/852-13-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/5024-7-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/5024-4-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\pxD88D.tmp 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe -
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 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150491" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150491" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "120707593" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "120707593" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "123363733" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441325365" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{32B53BCA-BD8E-11EF-BDBF-DEEFF298442C} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150491" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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 -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe 852 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 540 iexplore.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 1524 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe 540 iexplore.exe 540 iexplore.exe 3564 IEXPLORE.EXE 3564 IEXPLORE.EXE 3564 IEXPLORE.EXE 3564 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1524 wrote to memory of 5024 1524 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe 83 PID 1524 wrote to memory of 5024 1524 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe 83 PID 1524 wrote to memory of 5024 1524 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe 83 PID 5024 wrote to memory of 852 5024 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe 84 PID 5024 wrote to memory of 852 5024 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe 84 PID 5024 wrote to memory of 852 5024 6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe 84 PID 852 wrote to memory of 540 852 DesktopLayer.exe 85 PID 852 wrote to memory of 540 852 DesktopLayer.exe 85 PID 540 wrote to memory of 3564 540 iexplore.exe 86 PID 540 wrote to memory of 3564 540 iexplore.exe 86 PID 540 wrote to memory of 3564 540 iexplore.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe"C:\Users\Admin\AppData\Local\Temp\6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1524 -
C:\Users\Admin\AppData\Local\Temp\6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exeC:\Users\Admin\AppData\Local\Temp\6a3204a26737f6661fb5dd55b60116d6994328858390901eee926e3e8365ffe0Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5024 -
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:852 -
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:540 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:540 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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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
MD55e99ec80bb4e60401972729dff7db4f2
SHA1a68a2f47614d8afd1b7afd1e0620d32cd393e2c0
SHA2566ac6e0c6b415580d28c082f0e59f45289379890a167c088a557d3e2578b424e0
SHA5127670c7e91ae9555458275effc570e107c9ae43b02e65f9200b773f9139dfe228faf55f5c4ac5d9d713d0231e16c129baf1c289534b42ac7b4d042f370240c654
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD58c9d059091ad039690192714634e8087
SHA1607900851360d4b9de435a4906be948fa6c49dc9
SHA25683ad37da709043691a8343fc5b808491497d940be9554de3b3f75c648a765533
SHA51203454f1623b53678a0fc10023f7f8861b3320f266fd9ea9a3b4ec418db057f536bdbe4951fbf2e373d51131677468c4398441dcd6485d1a2c7c2a162b36e82b3
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee