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
22-11-2024 09:44
General
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Target
accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe
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Size
111KB
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MD5
a0359b9f9f24d542ea9810aba26cede0
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SHA1
6a30a7a6418aed56c2e7c88a4128b8c94c4dd0c4
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SHA256
accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee
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SHA512
9c00c64ea988be46464ba3a01fe1fc7375555f6f5c1f09b9bb158351d4854eae17569e2ff74c51bd23f5adbbad2b56d4be79bf0d4e5328c233b2c7d9c1b724dc
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SSDEEP
3072:bROzoTq0+RO7IwnYLdxZ4j8givE8hcRoAqZ:dkdNwBg4j8gisjoAqZ
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 388 DesktopLayer.exe -
resource yara_rule behavioral1/memory/2148-0-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2148-2-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x000d000000023b91-5.dat upx behavioral1/memory/388-9-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/2148-11-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/388-8-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe File opened for modification C:\Program Files (x86)\Microsoft\pxABE0.tmp accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 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 accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1154972033" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31145155" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{707050F4-A8B6-11EF-A4B7-F6235BFAC6D3} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31145155" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1161065794" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31145155" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1154972033" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "439033674" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\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 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe 388 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1524 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1524 iexplore.exe 1524 iexplore.exe 4880 IEXPLORE.EXE 4880 IEXPLORE.EXE 4880 IEXPLORE.EXE 4880 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2148 wrote to memory of 388 2148 accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe 82 PID 2148 wrote to memory of 388 2148 accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe 82 PID 2148 wrote to memory of 388 2148 accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe 82 PID 388 wrote to memory of 1524 388 DesktopLayer.exe 83 PID 388 wrote to memory of 1524 388 DesktopLayer.exe 83 PID 1524 wrote to memory of 4880 1524 iexplore.exe 84 PID 1524 wrote to memory of 4880 1524 iexplore.exe 84 PID 1524 wrote to memory of 4880 1524 iexplore.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe"C:\Users\Admin\AppData\Local\Temp\accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:388 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"3⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1524 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1524 CREDAT:17410 /prefetch:24⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4880
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
111KB
MD5a0359b9f9f24d542ea9810aba26cede0
SHA16a30a7a6418aed56c2e7c88a4128b8c94c4dd0c4
SHA256accbb992d5092be5b5fcbb8b0d45ca87884d6cc7d209f17b9799a9cadb4063ee
SHA5129c00c64ea988be46464ba3a01fe1fc7375555f6f5c1f09b9bb158351d4854eae17569e2ff74c51bd23f5adbbad2b56d4be79bf0d4e5328c233b2c7d9c1b724dc
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5a5d59031144ac6ab3dbf6358566aa618
SHA1f6fb4567bbfd07f0df27083b36a179e00c263c5d
SHA256039ec47b1e431e2555dc8da6bff06a3c78b242c01c9553286128c0f94d4c55ff
SHA512a3049b32be6a7e8a4b1522d32df205e6433fa81fd540893ca917eb6ca33f51f79ec5571f144727bf145f00a457b4705942f0c55c85ddad96a227465345fc866f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5681b1e5e429ba4c63de6303cc972e0b7
SHA1ee3665d324cacafabbe4154e0c0ac89ded133c46
SHA2565d59777ac06c2d22a63d3af11d4ee06a33df07130393aecc44b6c6936021f60d
SHA51251fd61bcfb4b87ef3b2fe244c23a910a6cb8b6d565b91694bcdb09bfa8aa12cec4153e39745c5b4bc9e84d840ebd24d2477a02b7acf58eac945149564a4a064b
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee