Analysis
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max time kernel
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max time network
116s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
18/11/2024, 10:45
Static task
static1
Behavioral task
behavioral1
Sample
14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe
Resource
win7-20241010-en
General
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Target
14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe
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Size
1.4MB
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MD5
7f2ea738eecc9ff7be1a571ad13408c0
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SHA1
8b795d6210e4a208f203bc918e33cb26076f534d
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SHA256
14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4
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SHA512
b3d8844ee2a88df213475aa28e0fdf9c9f613ea7686b28f787857b002c738ab6d8a26bd2e531d56a9df591449a053020557c8b0d424ff30b48afb6ca98045740
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SSDEEP
24576:zFiJgbowe6ssJQcAZvI4lyzTCiKC/XS8BGqcJOx0D3gQ:z7ow4sKpqFSDJA0k
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
pid Process 4624 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe 4904 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000d000000023b80-3.dat upx behavioral2/memory/4624-4-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4624-8-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4904-11-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4904-16-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4904-14-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\pxBD74.tmp 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.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 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144359" IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "613679774" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "621805097" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144359" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438691741" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{50235501-A59A-11EF-A7EA-7E3D785E6C2E} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144359" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "613679774" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe 4904 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2588 iexplore.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 604 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe 604 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe 2588 iexplore.exe 2588 iexplore.exe 2348 IEXPLORE.EXE 2348 IEXPLORE.EXE 2348 IEXPLORE.EXE 2348 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 604 wrote to memory of 4624 604 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe 84 PID 604 wrote to memory of 4624 604 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe 84 PID 604 wrote to memory of 4624 604 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe 84 PID 4624 wrote to memory of 4904 4624 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe 85 PID 4624 wrote to memory of 4904 4624 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe 85 PID 4624 wrote to memory of 4904 4624 14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe 85 PID 4904 wrote to memory of 2588 4904 DesktopLayer.exe 86 PID 4904 wrote to memory of 2588 4904 DesktopLayer.exe 86 PID 2588 wrote to memory of 2348 2588 iexplore.exe 87 PID 2588 wrote to memory of 2348 2588 iexplore.exe 87 PID 2588 wrote to memory of 2348 2588 iexplore.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe"C:\Users\Admin\AppData\Local\Temp\14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4N.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:604 -
C:\Users\Admin\AppData\Local\Temp\14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exeC:\Users\Admin\AppData\Local\Temp\14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4624 -
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:4904 -
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:2588 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2588 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2348
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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
MD5cdfebcd84ff934bb577a1d3a07a3ccad
SHA15092f452374bb3943b00cf53bcad7a92215bae87
SHA2567f877563622aeda07395133fb7c81746df3389c360549e2309c161c8a394d9bf
SHA512605a455017dc67d6257a5b434ce9a8df8fbac30dcf6e45856c823ee9998f4008ae08947129a23d88c222c866a06192c2e75374880fe8b67d591816492ae4f56b
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD56aa135bbed4aa1e245bd05d3a1e1cbbe
SHA1a4b21b6d7fbca3e1da905b73e1d717ba0c57f815
SHA2568961cf6b6494cb72960c5edb8c42cc7454b62de95b99a5c9b3cdf581793dc1cf
SHA5126825b023639c769eacc6b322c04de6564d89bb7c4eba9a5ceb6495210bfb48e141a770d5dcdc9d093f803bd93a6566db4974f098cfda3716d795514a976f72c6
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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C:\Users\Admin\AppData\Local\Temp\14197801675c4aadca4ffcac14bd4b104b9130ae2c9e6d93e52f661b1a0c40b4NSrv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a