Analysis
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max time kernel
93s -
max time network
112s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
21-11-2024 01:52
Static task
static1
Behavioral task
behavioral1
Sample
abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll
Resource
win7-20241010-en
General
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Target
abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll
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Size
224KB
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MD5
b5bdccd1c02b6764910e94a6d9e9a5ac
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SHA1
d1e2e74212c31993f6481be53865610ecc85e98f
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SHA256
abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62
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SHA512
8341fa6403071425f726ac8305c423f7e0de50f445b111174a576cb7b9f8ffd85908db7bbbcea169b7b9f9ca41a13554a6833a9c0be317b75a49f4dffdc0aa03
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SSDEEP
6144:Th8d15radWEXFjys88Qy8Af/RoEznpwfBs1S:V8dXWRMsEy9hD0ss
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
Processes:
regsvr32Srv.exeDesktopLayer.exepid process 4916 regsvr32Srv.exe 3688 DesktopLayer.exe -
Drops file in System32 directory 1 IoCs
Processes:
regsvr32.exedescription ioc process File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe -
Processes:
resource yara_rule behavioral2/memory/4916-4-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Windows\SysWOW64\regsvr32Srv.exe upx behavioral2/memory/4916-6-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4916-12-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3688-13-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3688-16-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3688-17-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
Processes:
regsvr32Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\px9CEC.tmp regsvr32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.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.
Processes:
regsvr32.exeregsvr32Srv.exeDesktopLayer.exeIEXPLORE.EXEdescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32Srv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE -
Processes:
IEXPLORE.EXEiexplore.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144888" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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 Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "212523016" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "214085344" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144888" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144888" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144888" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{382BD745-A7AB-11EF-ADF2-520873AEBE93} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "212523016" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "214085344" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438918904" iexplore.exe -
Modifies registry class 17 IoCs
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\ = "Dxshow Oms Source" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\CLSID = "{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\OMSP regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\ = "Mxshow Oms Source" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32\ThreadingModel = "Both" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\OMSP\Source Filter = "{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\FriendlyName = "Kylin Source" regsvr32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\FilterData = 020000000000400001000000000000003070693308000000000000000100000000000000000000003074793300000000380000004800000083eb36e44f52ce119f530020af0ba77000000000000000000000000000000000 regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB} regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe 3688 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 5056 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 5056 iexplore.exe 5056 iexplore.exe 4404 IEXPLORE.EXE 4404 IEXPLORE.EXE 4404 IEXPLORE.EXE 4404 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
regsvr32.exeregsvr32.exeregsvr32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 1692 wrote to memory of 3984 1692 regsvr32.exe regsvr32.exe PID 1692 wrote to memory of 3984 1692 regsvr32.exe regsvr32.exe PID 1692 wrote to memory of 3984 1692 regsvr32.exe regsvr32.exe PID 3984 wrote to memory of 4916 3984 regsvr32.exe regsvr32Srv.exe PID 3984 wrote to memory of 4916 3984 regsvr32.exe regsvr32Srv.exe PID 3984 wrote to memory of 4916 3984 regsvr32.exe regsvr32Srv.exe PID 4916 wrote to memory of 3688 4916 regsvr32Srv.exe DesktopLayer.exe PID 4916 wrote to memory of 3688 4916 regsvr32Srv.exe DesktopLayer.exe PID 4916 wrote to memory of 3688 4916 regsvr32Srv.exe DesktopLayer.exe PID 3688 wrote to memory of 5056 3688 DesktopLayer.exe iexplore.exe PID 3688 wrote to memory of 5056 3688 DesktopLayer.exe iexplore.exe PID 5056 wrote to memory of 4404 5056 iexplore.exe IEXPLORE.EXE PID 5056 wrote to memory of 4404 5056 iexplore.exe IEXPLORE.EXE PID 5056 wrote to memory of 4404 5056 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1692 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\abaa5b87780f587dc979aa0154f637e27ae4f6dcdbaf8df4692486ab10bf8a62.dll2⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3984 -
C:\Windows\SysWOW64\regsvr32Srv.exeC:\Windows\SysWOW64\regsvr32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4916 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3688 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5056 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5056 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4404
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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
MD55cdba0b951b215a32f9053da8eed5d75
SHA15bcaf283c5b7a740bc804a393298d6cf4f0ba4c7
SHA2565db4ebeed80b2c5b5e17e1f7ddc01139ee151ff2b398250393d8d30d3bbf1118
SHA5127471c506a63bc00edb959edc7b74b42af565c99297252348a6edd5ef1036ad7885f2ee3d5fad141400a549741980fe8f08c9a00a743bd696913e536d76c91d10
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD50b44aae65577a25e693b4105b83a5728
SHA1ddb8fc30e8da30da23f434e9cec7cfdf4eebebd7
SHA256d4e303086a21ea8aa8fc93455367694e177b4d87e1644919c7753ac59bffb7e6
SHA51257e3e74b42cde3b65cc9cfb646f64ba20e7bd25b5f52b82c350daeaa918678be10cb30c0d81b00efe8ed4e326cd301aa535d96b0bcba73fca32a28eda3e0c4a7
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a