Analysis
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max time kernel
96s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-12-2024 09:42
Static task
static1
Behavioral task
behavioral1
Sample
7667d41eee3d208899838a0bd86c4e11b78829fd6f175a59126fa4f740b4ec3b.dll
Resource
win7-20240708-en
General
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Target
7667d41eee3d208899838a0bd86c4e11b78829fd6f175a59126fa4f740b4ec3b.dll
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Size
289KB
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MD5
390097bf54414e0bd831d07ada42feee
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SHA1
1a04dce013331d615748f43ede9db01f850acd68
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SHA256
7667d41eee3d208899838a0bd86c4e11b78829fd6f175a59126fa4f740b4ec3b
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SHA512
a5bd69b0b062b22504002329c4554903646b46cb4a2b11998b18bfa14974925f722bf676bf10c9ed2e0ca5aeaa4bda99ac52b179aea17f97073c0359569eeb74
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SSDEEP
6144:PCIGPj038tAgFMldWNX+DubRkLZ2+KcAfv5CSkSL:Uj038t/FMldW4DTZ2+KccC9SL
Malware Config
Signatures
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Ramnit family
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Executes dropped EXE 1 IoCs
pid Process 456 rundll32mgr.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/456-10-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-9-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-8-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-15-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-14-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-13-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-12-0x0000000000400000-0x000000000041A000-memory.dmp upx behavioral2/memory/456-20-0x0000000000400000-0x000000000041A000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 1324 2280 WerFault.exe 84 -
System Location Discovery: System Language Discovery 1 TTPs 3 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 rundll32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language IEXPLORE.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1427915225" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441366298" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150586" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150586" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1427915225" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1431030486" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{80A6A676-BDED-11EF-B9B6-DEEFF298442C} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150586" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe 456 rundll32mgr.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 456 rundll32mgr.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2016 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2016 iexplore.exe 2016 iexplore.exe 688 IEXPLORE.EXE 688 IEXPLORE.EXE 688 IEXPLORE.EXE 688 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 456 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 924 wrote to memory of 2280 924 rundll32.exe 84 PID 924 wrote to memory of 2280 924 rundll32.exe 84 PID 924 wrote to memory of 2280 924 rundll32.exe 84 PID 2280 wrote to memory of 456 2280 rundll32.exe 85 PID 2280 wrote to memory of 456 2280 rundll32.exe 85 PID 2280 wrote to memory of 456 2280 rundll32.exe 85 PID 456 wrote to memory of 2016 456 rundll32mgr.exe 88 PID 456 wrote to memory of 2016 456 rundll32mgr.exe 88 PID 2016 wrote to memory of 688 2016 iexplore.exe 90 PID 2016 wrote to memory of 688 2016 iexplore.exe 90 PID 2016 wrote to memory of 688 2016 iexplore.exe 90
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7667d41eee3d208899838a0bd86c4e11b78829fd6f175a59126fa4f740b4ec3b.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:924 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7667d41eee3d208899838a0bd86c4e11b78829fd6f175a59126fa4f740b4ec3b.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- 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:456 -
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:2016 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2016 CREDAT:17410 /prefetch:25⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:688
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 6083⤵
- Program crash
PID:1324
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2280 -ip 22801⤵PID:2952
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
MD55e99ec80bb4e60401972729dff7db4f2
SHA1a68a2f47614d8afd1b7afd1e0620d32cd393e2c0
SHA2566ac6e0c6b415580d28c082f0e59f45289379890a167c088a557d3e2578b424e0
SHA5127670c7e91ae9555458275effc570e107c9ae43b02e65f9200b773f9139dfe228faf55f5c4ac5d9d713d0231e16c129baf1c289534b42ac7b4d042f370240c654
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize404B
MD5eacbb7a9c2cc9f6e834cc587237508eb
SHA1b05684058041f6731a1b99c562f4e50308d77d1e
SHA2569cd6e690a4c27cc2c2cd35022ff4b1a67ad334278e59d15bd6eda86ce91b594c
SHA5123c8bb3635c5839c34d0fd9219c8f523092564e641e79963343c51e47438f7dca2fedd12a37376b82c66b65b5ffd2e1280287d358cff88230558668102962a594
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
121KB
MD5ee77f2a82f0ada3db67768b4fb688c71
SHA15165e088484d73d5100a92bcfab9f6ea367407fe
SHA25671793760f681181db3e67b9f9231b1dc67dd896b431f4b13d920d876fb8edbb9
SHA51240e7a4dfedbbc8e936684b3bf498d2d47b05b2fe8af13f21e89dca5fac8aa1d9caa354120c4d0308295b35f9f6a9a2c2fd0eae488b33e665cb27431f3b2148f1