Analysis
- max time kernel
93s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
05/06/2024, 23:53
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
667375cc2bfe7e982cac3f5885383f16cdb5c2e5919496d54222f3f75ebc243d.dll
Resource
win7-20240508-en
5 signatures
150 seconds
General
- Target 667375cc2bfe7e982cac3f5885383f16cdb5c2e5919496d54222f3f75ebc243d.dll
- Size 152KB
- Sample240605-3xe39sdb46
- SHA256 667375cc2bfe7e982cac3f5885383f16cdb5c2e5919496d54222f3f75ebc243d
- MD5 a164d48e2e8a0d2a1f40da3a07535813
- SHA1 37eaa57c137b7699d3d97019757c98bf4720aeea
- SHA512 a8f6d687fb6de65516e9338cd0471b63b5b527c27d820a34d354c4d2c4530b2db062dd55f4101040dab03900229f773886c3b2e6a30445ebf53a44bb10d0e76f
- SSDEEP 3072:En4cV8gf2u41Z5tKlwjFcvC1XWmKVQY94hlX+El:24y8gOl2AFcvqGm8QYkl
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- UPX dump on OEP (original entry point) 10 IoCs
resource yara_rule behavioral2/memory/388-10-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/1528-28-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/1528-27-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/388-12-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/388-9-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/388-8-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/388-7-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/388-6-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/1528-36-0x0000000000400000-0x0000000000421000-memory.dmp UPX behavioral2/memory/1528-37-0x0000000000400000-0x0000000000421000-memory.dmp UPX - Executes dropped EXE 2 IoCs
pid Process 388 rundll32mgr.exe 1528 WaterMark.exe -
resource yara_rule behavioral2/memory/388-10-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1528-28-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1528-27-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-12-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-9-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-8-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-7-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-6-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/388-5-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1528-36-0x0000000000400000-0x0000000000421000-memory.dmp upx behavioral2/memory/1528-35-0x0000000000400000-0x0000000000423000-memory.dmp upx behavioral2/memory/1528-37-0x0000000000400000-0x0000000000421000-memory.dmp upx - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe - Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px4CC8.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 1 IoCs
pid pid_target Process procid_target 3348 1044 WerFault.exe 84 -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31111076" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2238070459" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "424396963" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (data) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2238070459" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31111076" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2240102479" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B0EE65CD-2397-11EF-B826-F2DE30E55115} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31111076" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2240102479" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31111076" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe - Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe 1528 WaterMark.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1528 WaterMark.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4444 iexplore.exe - Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4444 iexplore.exe 4444 iexplore.exe 1388 IEXPLORE.EXE 1388 IEXPLORE.EXE 1388 IEXPLORE.EXE 1388 IEXPLORE.EXE - Suspicious use of UnmapMainImage 2 IoCs
pid Process 388 rundll32mgr.exe 1528 WaterMark.exe - Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 2844 wrote to memory of 1684 2844 rundll32.exe 81 PID 2844 wrote to memory of 1684 2844 rundll32.exe 81 PID 2844 wrote to memory of 1684 2844 rundll32.exe 81 PID 1684 wrote to memory of 388 1684 rundll32.exe 82 PID 1684 wrote to memory of 388 1684 rundll32.exe 82 PID 1684 wrote to memory of 388 1684 rundll32.exe 82 PID 388 wrote to memory of 1528 388 rundll32mgr.exe 83 PID 388 wrote to memory of 1528 388 rundll32mgr.exe 83 PID 388 wrote to memory of 1528 388 rundll32mgr.exe 83 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 1044 1528 WaterMark.exe 84 PID 1528 wrote to memory of 4768 1528 WaterMark.exe 91 PID 1528 wrote to memory of 4768 1528 WaterMark.exe 91 PID 1528 wrote to memory of 4444 1528 WaterMark.exe 92 PID 1528 wrote to memory of 4444 1528 WaterMark.exe 92 PID 4444 wrote to memory of 1388 4444 iexplore.exe 93 PID 4444 wrote to memory of 1388 4444 iexplore.exe 93 PID 4444 wrote to memory of 1388 4444 iexplore.exe 93
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\667375cc2bfe7e982cac3f5885383f16cdb5c2e5919496d54222f3f75ebc243d.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\667375cc2bfe7e982cac3f5885383f16cdb5c2e5919496d54222f3f75ebc243d.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1684 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:388 -
C:\Program Files (x86)\Microsoft\WaterMark.exe"C:\Program Files (x86)\Microsoft\WaterMark.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Windows\SysWOW64\svchost.exeC:\Windows\system32\svchost.exe5⤵PID:1044
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 2086⤵
- Program crash
PID:3348
-
-
-
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"5⤵
- Modifies Internet Explorer settings
PID:4768
-
-
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:4444 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4444 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1388
-
-
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1044 -ip 10441⤵PID:4080
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
- Size 471B
- SHA256 38d397c653cacc803ac689cc6dadce2f32d45de009fe47e48a2d3e2452e78937
- MD5 ce6220b48abed29501775a21d6ae477f
- SHA1 36bc7225bb6340d74f33827be4aec52fb34ed772
- SHA512 79866ad2891e8440406b86574f1e68b7ec5eba93018609b5bccae485cc794a5cb6f5cdbc954663103151c0aba2c1d8444f651dd262427f478d9a5f45b16ee379
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
- Size 404B
- SHA256 004090cd676d41767c4e916db4dabcf0c9066713076a497f1ac664aca2189b3f
- MD5 fb7faf9f7b71df1517d775a3fd483ce9
- SHA1 29eddff40ee74a922a222a596ab79d181c56c3bc
- SHA512 7492981f1f3716c6a37891755a48059b720fc6654c0f312d40aaa1417d2f6c8eae1fab2005595dbc20f71e3f2be6d41c6b32be3d26f70695357b59d8c3d7dc52
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verD0DD.tmp
- Size 15KB
- SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
- MD5 1a545d0052b581fbb2ab4c52133846bc
- SHA1 62f3266a9b9925cd6d98658b92adec673cbe3dd3
- SHA512 bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
- SSDEEP 384:79Jv9DF9/C9qc9/J9V791T9TK9Xf9Nm9xQ95a9BR9fV:79Jv9DF9/C9qc9/J9V791T9TK9Xf9NmT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\WOBB13N1\suggestions[1].en-US
- Size 17KB
- SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
- MD5 5a34cb996293fde2cb7a4ac89587393a
- SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
- SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
- SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\rundll32mgr.exe
- Size 59KB
- SHA256 5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd
- MD5 0e0f0ae845d89c22bb6385f64a6b85fd
- SHA1 0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac
- SHA512 baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350
- SSDEEP 768:W06R0UKzOgnKqGR7//GPc0LOBhvBrHks3IiyhDYQbGmxlNaM+WGa1wuxnzgOYw9L:0R0vxn3Pc0LCH9MtbvabUDzJYWu3BU
- MD5 SHA1 SHA512 SSDEEP