Analysis
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max time kernel
138s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
21/11/2022, 10:27
Static task
static1
Behavioral task
behavioral1
Sample
be75c6fea5001d90d3847ec3a4fff40435d1315838da507addbab5c22229f2c6.dll
Resource
win7-20221111-en
General
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Target
be75c6fea5001d90d3847ec3a4fff40435d1315838da507addbab5c22229f2c6.dll
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Size
146KB
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MD5
121b47683a3e1b3e81c57f4c92400880
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SHA1
eb96a9d0faeeffa3a3a260012e845f8c3d45a78f
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SHA256
be75c6fea5001d90d3847ec3a4fff40435d1315838da507addbab5c22229f2c6
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SHA512
15dd1edb23c1ab44303cd1983885286b426971930d13fed64bb093336bf03c2c8ca3dff1622742161cbc59645b7b3e89bbba4e3451ebea2048dda642e95ab111
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SSDEEP
3072:Zacja0dCawg82wNaoBG3hSS1d4H5fqMSMFoO9CiTw9h:Z62ww50S1d4HVbSoN0
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4748 rundll32Srv.exe 3184 rundll32SrvSrv.exe 1988 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x000b000000022db0-134.dat upx behavioral2/files/0x0009000000022db3-136.dat upx behavioral2/memory/4748-140-0x0000000000400000-0x000000000043D000-memory.dmp upx behavioral2/files/0x0008000000022db8-145.dat upx behavioral2/files/0x0008000000022db8-144.dat upx behavioral2/memory/3184-142-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x0009000000022db3-138.dat upx behavioral2/memory/1988-146-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x000b000000022db0-137.dat upx -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe File created C:\Windows\SysWOW64\rundll32SrvSrv.exe rundll32Srv.exe -
Drops file in Program Files directory 5 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32SrvSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\px71F8.tmp rundll32SrvSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\px71F8.tmp rundll32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32SrvSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1334277568" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997916" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1334745556" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375795024" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997916" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{7AF7C174-698F-11ED-B8D8-7A41DBBD5662} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1351778860" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{7B03ACE3-698F-11ED-B8D8-7A41DBBD5662} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1334745556" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997916" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1334277568" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997916" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997916" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 4748 rundll32Srv.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe 1988 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1188 iexplore.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1188 iexplore.exe 376 iexplore.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 376 iexplore.exe 376 iexplore.exe 1188 iexplore.exe 1188 iexplore.exe 2252 IEXPLORE.EXE 2252 IEXPLORE.EXE 2876 IEXPLORE.EXE 2876 IEXPLORE.EXE 2252 IEXPLORE.EXE 2252 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 4760 wrote to memory of 4736 4760 rundll32.exe 83 PID 4760 wrote to memory of 4736 4760 rundll32.exe 83 PID 4760 wrote to memory of 4736 4760 rundll32.exe 83 PID 4736 wrote to memory of 4748 4736 rundll32.exe 84 PID 4736 wrote to memory of 4748 4736 rundll32.exe 84 PID 4736 wrote to memory of 4748 4736 rundll32.exe 84 PID 4748 wrote to memory of 3184 4748 rundll32Srv.exe 85 PID 4748 wrote to memory of 3184 4748 rundll32Srv.exe 85 PID 4748 wrote to memory of 3184 4748 rundll32Srv.exe 85 PID 3184 wrote to memory of 1988 3184 rundll32SrvSrv.exe 86 PID 3184 wrote to memory of 1988 3184 rundll32SrvSrv.exe 86 PID 3184 wrote to memory of 1988 3184 rundll32SrvSrv.exe 86 PID 4748 wrote to memory of 1188 4748 rundll32Srv.exe 88 PID 4748 wrote to memory of 1188 4748 rundll32Srv.exe 88 PID 1988 wrote to memory of 376 1988 DesktopLayer.exe 87 PID 1988 wrote to memory of 376 1988 DesktopLayer.exe 87 PID 376 wrote to memory of 2876 376 iexplore.exe 89 PID 376 wrote to memory of 2876 376 iexplore.exe 89 PID 376 wrote to memory of 2876 376 iexplore.exe 89 PID 1188 wrote to memory of 2252 1188 iexplore.exe 90 PID 1188 wrote to memory of 2252 1188 iexplore.exe 90 PID 1188 wrote to memory of 2252 1188 iexplore.exe 90
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\be75c6fea5001d90d3847ec3a4fff40435d1315838da507addbab5c22229f2c6.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4760 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\be75c6fea5001d90d3847ec3a4fff40435d1315838da507addbab5c22229f2c6.dll,#12⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4748 -
C:\Windows\SysWOW64\rundll32SrvSrv.exeC:\Windows\SysWOW64\rundll32SrvSrv.exe4⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3184 -
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:1988 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"6⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:376 CREDAT:17410 /prefetch:27⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2876
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1188 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1188 CREDAT:17410 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2252
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Network
MITRE ATT&CK Enterprise v6
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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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{7AF7C174-698F-11ED-B8D8-7A41DBBD5662}.dat
Filesize5KB
MD58ada39ed982e499c363bff68fb352508
SHA19a3969b8dc7049e05157692badb06cd4661a67fb
SHA2565a7b0db137cfc9eca83cd6a0d616150bf4b3f530087edcc7a79d8fd4c1174522
SHA512dff1b13c1c21ce0962c5247711f45ac03dcdc06927b3d2da3cf464ac751f432a6ba31181914a2a81559e94acaa2bba5e51edf446f9d297cd2c087e3f30446c25
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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{7B03ACE3-698F-11ED-B8D8-7A41DBBD5662}.dat
Filesize5KB
MD5aacb02328092ce113dddf7848ddb4f53
SHA13564081d538e3bfe48a8f4baf97c53944f60f7d1
SHA256a7f17a47e0a24d72581bf069d7099694558e06abe99c0601e430ee35b7d873cd
SHA512a150b6e8b90b06ad1be1d4abe627bfc3495aad428ccf73709285ba7219989321ba50fddbb571cde40bdec0ab23f2cd16b4f83e6d1deca69d68cd1aadd5810a84
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Filesize
111KB
MD516d7d52605c1d9a9f0e7d28d72e93e66
SHA1837e7d3a8565f7baca2d734d4100326a3d0379e4
SHA25624ea922c993c9f0fdaad956327f48434bd22b9c6c2a68ee1ec58074f1162ba02
SHA5127339cecd164270856df735398f8b5b159f5d0658bc07ac953c237e6a07263b7bb1ebb46a061b763b247617af29cb866513973ef21e88b068c2b83be8047a4eec
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Filesize
111KB
MD516d7d52605c1d9a9f0e7d28d72e93e66
SHA1837e7d3a8565f7baca2d734d4100326a3d0379e4
SHA25624ea922c993c9f0fdaad956327f48434bd22b9c6c2a68ee1ec58074f1162ba02
SHA5127339cecd164270856df735398f8b5b159f5d0658bc07ac953c237e6a07263b7bb1ebb46a061b763b247617af29cb866513973ef21e88b068c2b83be8047a4eec
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a