Analysis
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max time kernel
145s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
14/10/2023, 17:51
Static task
static1
Behavioral task
behavioral1
Sample
NEAS.3d1b746318114ece057753c7ac222380.dll
Resource
win7-20230831-en
General
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Target
NEAS.3d1b746318114ece057753c7ac222380.dll
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Size
235KB
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MD5
3d1b746318114ece057753c7ac222380
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SHA1
59be6d31a8d8f7c70b053b6f3c2aee1cbf012ea8
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SHA256
e7e7d3a161b44644c362ea3c7ffa9a9be8472959b8a2c62901816d3d5dd37e05
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SHA512
9ad84700e9312b28b2bcb6c5d64ec5fc55e3ea23b2987f1b5619fad72ced6c394e45b21c8cc8b0107984ad4490793249cb03edf09d69ef136ba0d6efd8fcbc35
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SSDEEP
6144:6v8LGyHuuG/NV2Hm+8Nj7J1hH1RhC+R5k:6v8Prb8NjF5R5k
Malware Config
Signatures
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Executes dropped EXE 5 IoCs
pid Process 3040 rundll32mgr.exe 1884 hrl7E86.tmp 4624 rundll32mgrSrv.exe 1576 xchlyg.exe 2696 DesktopLayer.exe -
Loads dropped DLL 1 IoCs
pid Process 3040 rundll32mgr.exe -
resource yara_rule behavioral2/files/0x0007000000023232-13.dat upx behavioral2/memory/4624-14-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/4624-18-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x0008000000023234-27.dat upx behavioral2/memory/3040-25-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/memory/3040-24-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/files/0x0008000000023234-31.dat upx behavioral2/memory/3040-41-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/memory/3040-36-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/memory/3040-35-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/memory/2696-34-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3040-30-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/memory/3040-19-0x0000000000400000-0x000000000042A000-memory.dmp upx behavioral2/files/0x0007000000023232-16.dat upx -
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgrSrv.exe rundll32mgr.exe File created C:\Windows\SysWOW64\xchlyg.exe hrl7E86.tmp File opened for modification C:\Windows\SysWOW64\xchlyg.exe hrl7E86.tmp 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\px7F23.tmp rundll32mgrSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32mgrSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32mgrSrv.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 3220 3040 WerFault.exe 86 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "424122154" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{4464743D-6B04-11EE-8688-56402FC161CD} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\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-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "424122154" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31063825" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31063825" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "401526837" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe 2696 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4680 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 1884 hrl7E86.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4680 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4680 iexplore.exe 4680 iexplore.exe 856 IEXPLORE.EXE 856 IEXPLORE.EXE 856 IEXPLORE.EXE 856 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3040 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4248 wrote to memory of 4408 4248 rundll32.exe 85 PID 4248 wrote to memory of 4408 4248 rundll32.exe 85 PID 4248 wrote to memory of 4408 4248 rundll32.exe 85 PID 4408 wrote to memory of 3040 4408 rundll32.exe 86 PID 4408 wrote to memory of 3040 4408 rundll32.exe 86 PID 4408 wrote to memory of 3040 4408 rundll32.exe 86 PID 4408 wrote to memory of 1884 4408 rundll32.exe 87 PID 4408 wrote to memory of 1884 4408 rundll32.exe 87 PID 4408 wrote to memory of 1884 4408 rundll32.exe 87 PID 3040 wrote to memory of 4624 3040 rundll32mgr.exe 88 PID 3040 wrote to memory of 4624 3040 rundll32mgr.exe 88 PID 3040 wrote to memory of 4624 3040 rundll32mgr.exe 88 PID 4624 wrote to memory of 2696 4624 rundll32mgrSrv.exe 90 PID 4624 wrote to memory of 2696 4624 rundll32mgrSrv.exe 90 PID 4624 wrote to memory of 2696 4624 rundll32mgrSrv.exe 90 PID 1576 wrote to memory of 4292 1576 xchlyg.exe 92 PID 1576 wrote to memory of 4292 1576 xchlyg.exe 92 PID 1576 wrote to memory of 4292 1576 xchlyg.exe 92 PID 2696 wrote to memory of 4680 2696 DesktopLayer.exe 91 PID 2696 wrote to memory of 4680 2696 DesktopLayer.exe 91 PID 1884 wrote to memory of 3260 1884 hrl7E86.tmp 94 PID 1884 wrote to memory of 3260 1884 hrl7E86.tmp 94 PID 1884 wrote to memory of 3260 1884 hrl7E86.tmp 94 PID 4680 wrote to memory of 856 4680 iexplore.exe 96 PID 4680 wrote to memory of 856 4680 iexplore.exe 96 PID 4680 wrote to memory of 856 4680 iexplore.exe 96
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.3d1b746318114ece057753c7ac222380.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4248 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.3d1b746318114ece057753c7ac222380.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4408 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Windows\SysWOW64\rundll32mgrSrv.exeC:\Windows\SysWOW64\rundll32mgrSrv.exe4⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4624 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"5⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"6⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4680 CREDAT:17410 /prefetch:27⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:856
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 4364⤵
- Program crash
PID:3220
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C:\Users\Admin\AppData\Local\Temp\hrl7E86.tmpC:\Users\Admin\AppData\Local\Temp\hrl7E86.tmp3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\hrl7E86.tmp > nul4⤵PID:3260
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C:\Windows\SysWOW64\xchlyg.exeC:\Windows\SysWOW64\xchlyg.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1576 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵PID:4292
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3040 -ip 30401⤵PID:4204
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
36KB
MD5a7027359c127c41f595e192d5bc6f93c
SHA1d20c0fd0c6b3a5d0d7d4a208dfe5312bbbbee460
SHA2564c66b842b00f801a48a2885774efa3ae6f13ff494fcdb68052d1b77aa8934bec
SHA512a6b41721c5e41164c45e990d1eda9e43112dc38d661fe1b33dd922c38005a6a7a2a4e3fafa481621149e798db3c208c289918d384eb803e86d4386d60d2bdaf9
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Filesize
36KB
MD5a7027359c127c41f595e192d5bc6f93c
SHA1d20c0fd0c6b3a5d0d7d4a208dfe5312bbbbee460
SHA2564c66b842b00f801a48a2885774efa3ae6f13ff494fcdb68052d1b77aa8934bec
SHA512a6b41721c5e41164c45e990d1eda9e43112dc38d661fe1b33dd922c38005a6a7a2a4e3fafa481621149e798db3c208c289918d384eb803e86d4386d60d2bdaf9
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
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Filesize
190KB
MD52ebdeb96a255d8b9b7bb47f5e367051e
SHA1e43d006640b1d24ff7b97c15b8b5f85b5afe1437
SHA2563339a9c937ac2b4c1626da8b2eaeef935d4b72b48ff921fecf0ba907d3242329
SHA5124ec4f54979ecbb0e137d92a81e019d114d6e5dd03b48a50ea291a0ae3674fddfc0c27e9d9b12c1477d7aa5772df910a7d92b306e80bc09ce6ac4cb28318091cc
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Filesize
190KB
MD52ebdeb96a255d8b9b7bb47f5e367051e
SHA1e43d006640b1d24ff7b97c15b8b5f85b5afe1437
SHA2563339a9c937ac2b4c1626da8b2eaeef935d4b72b48ff921fecf0ba907d3242329
SHA5124ec4f54979ecbb0e137d92a81e019d114d6e5dd03b48a50ea291a0ae3674fddfc0c27e9d9b12c1477d7aa5772df910a7d92b306e80bc09ce6ac4cb28318091cc
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
36KB
MD5a7027359c127c41f595e192d5bc6f93c
SHA1d20c0fd0c6b3a5d0d7d4a208dfe5312bbbbee460
SHA2564c66b842b00f801a48a2885774efa3ae6f13ff494fcdb68052d1b77aa8934bec
SHA512a6b41721c5e41164c45e990d1eda9e43112dc38d661fe1b33dd922c38005a6a7a2a4e3fafa481621149e798db3c208c289918d384eb803e86d4386d60d2bdaf9
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Filesize
36KB
MD5a7027359c127c41f595e192d5bc6f93c
SHA1d20c0fd0c6b3a5d0d7d4a208dfe5312bbbbee460
SHA2564c66b842b00f801a48a2885774efa3ae6f13ff494fcdb68052d1b77aa8934bec
SHA512a6b41721c5e41164c45e990d1eda9e43112dc38d661fe1b33dd922c38005a6a7a2a4e3fafa481621149e798db3c208c289918d384eb803e86d4386d60d2bdaf9