Analysis
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max time kernel
93s -
max time network
115s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
25-12-2024 16:54
Static task
static1
Behavioral task
behavioral1
Sample
24e8aed0e7a75b805b589e2684e49bb1aa6c827c3d1b67dfd2b5eb1b1ce94e95N.dll
Resource
win7-20240903-en
General
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Target
24e8aed0e7a75b805b589e2684e49bb1aa6c827c3d1b67dfd2b5eb1b1ce94e95N.dll
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Size
717KB
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MD5
e6caff8ce1b4d70cc599f1f47682a000
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SHA1
3bc72164abb926d7b18307ddb3cf56a70959391a
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SHA256
24e8aed0e7a75b805b589e2684e49bb1aa6c827c3d1b67dfd2b5eb1b1ce94e95
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SHA512
c6f18e82521183bae7a9a28218880420815dfb2d8b472a06f2a26179bd80b15b8455a670c7a684751061aa3e92ae8015160c0e2a019cda5b390437a0eb0e3faa
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SSDEEP
12288:LNIyZN4+Wv4PLq6Okrh9ZN/hs9DsdcCf/HmWMjP:L9TPmirh9Zdh6OOP
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 2 IoCs
pid Process 2224 rundll32mgr.exe 1416 WaterMark.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/memory/2224-12-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-11-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-13-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-14-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-9-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-8-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-7-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/2224-6-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-27-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-28-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-37-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-36-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-39-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1416-40-0x0000000000400000-0x0000000000421000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px7A60.tmp rundll32mgr.exe File created C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe File opened for modification C:\Program Files (x86)\Microsoft\WaterMark.exe rundll32mgr.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 4316 1968 WerFault.exe 82 2572 4656 WerFault.exe 87 -
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 WaterMark.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3456433890" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F9754C36-C2E0-11EF-BEF1-EE6C25FCE24B} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3455183747" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151853" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31151853" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3456433890" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441910673" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151853" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31151853" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3455183747" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe 1416 WaterMark.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1416 WaterMark.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2532 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2532 iexplore.exe 2532 iexplore.exe 4984 IEXPLORE.EXE 4984 IEXPLORE.EXE 4984 IEXPLORE.EXE 4984 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2224 rundll32mgr.exe 1416 WaterMark.exe -
Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 684 wrote to memory of 1968 684 rundll32.exe 82 PID 684 wrote to memory of 1968 684 rundll32.exe 82 PID 684 wrote to memory of 1968 684 rundll32.exe 82 PID 1968 wrote to memory of 2224 1968 rundll32.exe 83 PID 1968 wrote to memory of 2224 1968 rundll32.exe 83 PID 1968 wrote to memory of 2224 1968 rundll32.exe 83 PID 2224 wrote to memory of 1416 2224 rundll32mgr.exe 85 PID 2224 wrote to memory of 1416 2224 rundll32mgr.exe 85 PID 2224 wrote to memory of 1416 2224 rundll32mgr.exe 85 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 4656 1416 WaterMark.exe 87 PID 1416 wrote to memory of 2532 1416 WaterMark.exe 91 PID 1416 wrote to memory of 2532 1416 WaterMark.exe 91 PID 1416 wrote to memory of 872 1416 WaterMark.exe 92 PID 1416 wrote to memory of 872 1416 WaterMark.exe 92 PID 2532 wrote to memory of 4984 2532 iexplore.exe 93 PID 2532 wrote to memory of 4984 2532 iexplore.exe 93 PID 2532 wrote to memory of 4984 2532 iexplore.exe 93
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\24e8aed0e7a75b805b589e2684e49bb1aa6c827c3d1b67dfd2b5eb1b1ce94e95N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:684 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\24e8aed0e7a75b805b589e2684e49bb1aa6c827c3d1b67dfd2b5eb1b1ce94e95N.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2224 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵PID:4656
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 2046⤵
- Program crash
PID:2572
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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:2532 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2532 CREDAT:17410 /prefetch:26⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4984
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
PID:872
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1968 -s 6083⤵
- Program crash
PID:4316
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1968 -ip 19681⤵PID:4480
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4656 -ip 46561⤵PID:4856
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
MD573d8dd7eaa8896905e31f1960f51ece1
SHA1164e031603e75d95091220c5ff0d695547f6d3ae
SHA2569ff75ab638fe252bd0d04aea3f0ce38270ffc8df5db9399f9ea45aaef196dddc
SHA5124879585482992d7ea3ee02775b74592b06daab32a63dc7700dd4da40c45a524f3bcfc2beff928a85563f09ad0438be5b3e458bc3d0cd08ad146d416fec014a04
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD519479567851b45a41b50a31654aa48e0
SHA18daf5a52bf34b22e4cefd6f1e2adb080c246369e
SHA256cae1d4a8b724557cedec827288c3f934709a666437f7aa1092093468244ae163
SHA5120a5d377be0c6941f320e65b4a39fdc00e142e71af77e0e892dda5c3c0f48446f4c8a84b9318de51a8dad1f6796b7b86c4e65377d02bc00e4af915f76f970624d
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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
132KB
MD52613f374056a1d7e6885f1216fc85400
SHA11c41483da911afba432a5862cf59ed9449bac2e3
SHA2562004c482c127e1eeeff011c498c355aa21d3049d76365f19bd01c28cde631154
SHA5126a215ef6e0083163c0f0c0d22b04e131e4873df3dc98d660277103398fc7de1d1f2b1c6d14b565430eb3aeec30ae9c4a76c0ab37e53e036adff179397cef3055