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
17-11-2024 07:16
Behavioral task
behavioral1
Sample
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe
Resource
win7-20241023-en
General
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Target
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe
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Size
293KB
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MD5
bb4ce6432bbee2d6d8ac8eeec88903d1
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SHA1
732f0210d0601e28cb32ee7fd4ec0df8f88f0b5c
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SHA256
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9
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SHA512
e3f34d6c760fe187e7688b990af5f85ef290127e60a8f8f3b9406b7dd12fd84a66adff2997aacee1f316b888d36a5b9671bb0b12c6c217d4ac7c561db76191c3
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SSDEEP
6144:j/8MtxRgX+oLE0BZl8+it4UYddksayTacgQIxr:j/HSE0BsDtedzaK3gQ
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
Processes:
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exeDesktopLayer.exepid Process 4584 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe 4972 DesktopLayer.exe -
Processes:
resource yara_rule behavioral2/memory/4960-0-0x0000000000400000-0x00000000004B4000-memory.dmp upx behavioral2/files/0x000a000000023c4e-3.dat upx behavioral2/memory/4584-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4584-8-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4972-12-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4972-15-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4960-14-0x0000000000400000-0x00000000004B4000-memory.dmp upx behavioral2/memory/4972-17-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4960-19-0x0000000000400000-0x00000000004B4000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
Processes:
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exedescription ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxC747.tmp 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.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:
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exeDesktopLayer.exeIEXPLORE.EXEdescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.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 Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3257326485" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438592791" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{EDBD5134-A4B3-11EF-B9D5-FA9F886F8D04} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3262639297" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3257326485" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144128" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144128" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144128" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid Process 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe 4972 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid Process 4588 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid Process 4588 iexplore.exe 4588 iexplore.exe 2300 IEXPLORE.EXE 2300 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exeDesktopLayer.exeiexplore.exedescription pid Process procid_target PID 4960 wrote to memory of 4584 4960 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe 83 PID 4960 wrote to memory of 4584 4960 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe 83 PID 4960 wrote to memory of 4584 4960 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe 83 PID 4584 wrote to memory of 4972 4584 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe 85 PID 4584 wrote to memory of 4972 4584 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe 85 PID 4584 wrote to memory of 4972 4584 8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe 85 PID 4972 wrote to memory of 4588 4972 DesktopLayer.exe 86 PID 4972 wrote to memory of 4588 4972 DesktopLayer.exe 86 PID 4588 wrote to memory of 2300 4588 iexplore.exe 87 PID 4588 wrote to memory of 2300 4588 iexplore.exe 87 PID 4588 wrote to memory of 2300 4588 iexplore.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe"C:\Users\Admin\AppData\Local\Temp\8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4960 -
C:\Users\Admin\AppData\Local\Temp\8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exeC:\Users\Admin\AppData\Local\Temp\8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4584 -
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:4972 -
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:4588 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4588 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2300
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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
MD5d2c6a662e9bd0c89bf8cd03b201f89bd
SHA17c019c00c24825eedda6b9fd3e200a39aa47771e
SHA25608fec4715e35e941a8bc409fdafb8fab8c4b97e8883325b9082562eecc1cdca2
SHA512332b7cf422c2f656208ad9add4b15ee0c4ee7ee0074f67be9b7af32e9b4b59d487250bedeed06cf1763c13fe0da82cefccc4ada975dd148bf686f9cad08fbefb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD547dd4781de0aaee80ac1bbe909a046ab
SHA1ebc5b00e319e7035ea493e2d3bfbf9d2a35ac433
SHA25627f18b2e0ba9fff59bd5513cdf8e2eaac29d75055ab23451ce3da2fef31fccb2
SHA512f1785334d8ceea49d6808cb465415ebbbcaafe102d88b216548cbba562796f677d604655104634d60b341008180a1676ff6ddccbea9ba9cabf5742bcd898afbd
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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C:\Users\Admin\AppData\Local\Temp\8dbb61a0d40951a0b9fe74788cfd16c3fb44d3f525b6f51a948aae103b2674a9Srv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a