Analysis
- max time kernel
120s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
02/03/2024, 15:40
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe
Resource
win7-20240215-en
windows7-x64
11 signatures
150 seconds
General
- Target f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe
- Size 4.0MB
- Sample240302-s4bpbaef6v
- SHA256 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56
- MD5 7469047053f2306bcff34fa8ea026414
- SHA1 f21193e194179137f337643b2b9f215497b932f1
- SHA512 49007b78acd570734698aff7401fb69cf64745e8b158ee3a61f6ee59a439d4182352f88cd2d2318bf8d51b7365e70de68c5982a5d7029c002a0e5bbb7080f52d
- SSDEEP 98304:H/xzQIiWmUK1mu4qnbLQz7tvGauIPsUbXGJtFayNZAGAC:pz5iaKYqnYoau3tFayNZjR
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
pid Process 3768 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe 32 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000400000001e5eb-3.dat upx behavioral2/memory/3768-6-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/32-13-0x0000000000400000-0x000000000042E000-memory.dmp upx - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cghelper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe" f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe - Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\px4F58.tmp f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31091896" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "31305854" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31091896" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "36335758" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{2D6CFE0E-D8AB-11EE-B3C6-D28C415B03FA} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31091896" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "31316017" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416158995" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe 32 DesktopLayer.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4808 iexplore.exe - Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3508 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe 3508 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe 4808 iexplore.exe 4808 iexplore.exe 5116 IEXPLORE.EXE 5116 IEXPLORE.EXE 5116 IEXPLORE.EXE 5116 IEXPLORE.EXE - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3508 wrote to memory of 3768 3508 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe 87 PID 3508 wrote to memory of 3768 3508 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe 87 PID 3508 wrote to memory of 3768 3508 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe 87 PID 3768 wrote to memory of 32 3768 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe 88 PID 3768 wrote to memory of 32 3768 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe 88 PID 3768 wrote to memory of 32 3768 f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe 88 PID 32 wrote to memory of 4808 32 DesktopLayer.exe 89 PID 32 wrote to memory of 4808 32 DesktopLayer.exe 89 PID 4808 wrote to memory of 5116 4808 iexplore.exe 90 PID 4808 wrote to memory of 5116 4808 iexplore.exe 90 PID 4808 wrote to memory of 5116 4808 iexplore.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe"C:\Users\Admin\AppData\Local\Temp\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3508 -
C:\Users\Admin\AppData\Local\Temp\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exeC:\Users\Admin\AppData\Local\Temp\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3768 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:32 -
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:4808 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4808 CREDAT:17410 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:5116
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6Y4OXOYV\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:\Users\Admin\AppData\Local\Temp\f2b4ef2bafbb2212ddb32dd520965ec7b95ed2ed7ff95614271324550d3c6e56Srv.exe
- Size 55KB
- SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
- MD5 ff5e1f27193ce51eec318714ef038bef
- SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
- SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
- SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
- MD5 SHA1 SHA512 SSDEEP