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Analysis
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max time kernel
95s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26/12/2024, 14:41
Static task
static1
Behavioral task
behavioral1
Sample
921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe
Resource
win7-20241010-en
General
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Target
921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe
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Size
1.0MB
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MD5
274cd54d172c7b050e86a1490eeacdc1
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SHA1
1cae02626a6632ef8499d780965c4e5a503575d3
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SHA256
921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de
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SHA512
bd5cf00f43a212fdb5f946b09039fac23dfb5fd7d16e46bd285a232597fa0a3467db059aaf7e49813e608b398cf059f39012bc0d5b215780a40dd5428650cbf4
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SSDEEP
24576:zKpsANa+fHl66lNHYWTS6/ZWS5vYLWyghjzojT:zKKAbl6046F4S5YLWlNEjT
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 3 IoCs
pid Process 1948 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe 4272 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe 4104 DesktopLayer.exe -
Loads dropped DLL 4 IoCs
pid Process 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 3884 IEXPLORE.EXE 3884 IEXPLORE.EXE -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\ESPI11.dll 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe -
resource yara_rule behavioral2/files/0x000a000000023c4e-3.dat upx behavioral2/memory/1948-6-0x0000000000400000-0x000000000045B000-memory.dmp upx behavioral2/files/0x0008000000023cad-9.dat upx behavioral2/memory/4104-20-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4104-19-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4272-14-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4272-10-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/1948-32-0x0000000000400000-0x000000000045B000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxC6BB.tmp 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 4928 1948 WerFault.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 5 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 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DesktopLayer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe -
description ioc Process 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 Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31152036" 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 = "441989057" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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 Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31152036" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152036" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152036" 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 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" 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\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1335790728" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1335790728" 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\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1335478578" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1335478578" 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 (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 (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{79FCAD41-C397-11EF-B9D5-FA9F886F8D04} = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe 4104 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3948 iexplore.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 3948 iexplore.exe 3948 iexplore.exe 3884 IEXPLORE.EXE 3884 IEXPLORE.EXE 3884 IEXPLORE.EXE 3884 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4360 wrote to memory of 1948 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 82 PID 4360 wrote to memory of 1948 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 82 PID 4360 wrote to memory of 1948 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 82 PID 4360 wrote to memory of 4272 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 83 PID 4360 wrote to memory of 4272 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 83 PID 4360 wrote to memory of 4272 4360 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe 83 PID 4272 wrote to memory of 4104 4272 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe 85 PID 4272 wrote to memory of 4104 4272 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe 85 PID 4272 wrote to memory of 4104 4272 921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe 85 PID 4104 wrote to memory of 3948 4104 DesktopLayer.exe 86 PID 4104 wrote to memory of 3948 4104 DesktopLayer.exe 86 PID 3948 wrote to memory of 3884 3948 iexplore.exe 89 PID 3948 wrote to memory of 3884 3948 iexplore.exe 89 PID 3948 wrote to memory of 3884 3948 iexplore.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe"C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2de.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4360 -
C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exeC:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1948 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 2643⤵
- Program crash
PID:4928
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C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exeC:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4272 -
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:4104 -
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:3948 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3948 CREDAT:17410 /prefetch:25⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3884
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1948 -ip 19481⤵PID:2388
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize471B
MD5863881560832be6db3d7e95507b796d8
SHA1bab29c682b73454cb94d1a0edfaae5fd64d076f6
SHA2561b8c898d463e9947656d97610caa6068a39c17fae72baa9168113364b7f70063
SHA5120556ac3e08e23d12ba2558e3e1320f8c7591359a003c6b98e3d93208361000c3fc25dc13e9f4a3575ef854bd903b32f62a36e541ba10de67f38663d8d8debbcb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD54713ac7c55ac175ad8c99d3e14fb792e
SHA189fe6b22576d06998397d37580c35a8a87534314
SHA256193ce1d2528980606f22c3cf3986656aefe2d8b20a1754762ebc0742ce78dac6
SHA5127ee2f2289d65f3b2e941d213a52b0c33bfd4c18338fcf7ecacf7e171c2d68c619f97304c0068f8b81b1df6ae94612063155e3c4666623b30bd28b6c8f4aa2646
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2deSrv.exe
Filesize55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\921ebcd5594f9ec50a2b1d33de44958f89e2933ce0eb632c695f6dc934e0e2demgr.exe
Filesize105KB
MD5dfb5daabb95dcfad1a5faf9ab1437076
SHA14a199569a9b52911bee7fb19ab80570cc5ff9ed1
SHA25654282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0
SHA5125d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8
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Filesize
120KB
MD56ded751b628ddb2a1c0c05f18858437c
SHA1d1c98eb12d23975332ce59e17e8e1e3f3ad498fd
SHA2566733977939a17dafb2e100c898fd0948095b6b33e8362aebe57ef7ea87db58ab
SHA512554facab0a0d4b75504b0e3f9f8eda4ed0808e5397a214f3bf0c282542dfc2024c449b03c1aa9c1700307ce72ca88c1414650ec865b6e353b5d70f53aab10710