Analysis
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max time kernel
150s -
max time network
162s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
12/02/2023, 22:20
Static task
static1
Behavioral task
behavioral1
Sample
6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe
Resource
win10-20220812-en
General
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Target
6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe
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Size
3.6MB
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MD5
ee23f221e245cf87527c376ecb19d0a1
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SHA1
7910d20eb477a15d3ffc321de4f337acf281755b
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SHA256
6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e
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SHA512
b67d9e321a4f98ba2508b2091fb04c1b5ac40aae2ab8af5f7f50ce10f33758cc1609cce3d6137a84ed65423c971e84b2509fbbd3d6111003dbf1d404de694c0d
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SSDEEP
98304:32eKoeC3xP4Bmss/MTELYpiZKrs+vvM1:3rK9sP5l/FLYsgrs+vQ
Malware Config
Signatures
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Blocklisted process makes network request 3 IoCs
flow pid Process 2 352 rundll32.exe 3 352 rundll32.exe 11 352 rundll32.exe -
Loads dropped DLL 2 IoCs
pid Process 352 rundll32.exe 352 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts rundll32.exe -
Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 352 set thread context of 1328 352 rundll32.exe 67 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 27 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status rundll32.exe -
Modifies registry class 24 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1" rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e003100000000004c56c1ba100054656d7000003a0009000400efbe0c5553884c56c1ba2e00000000000000000000000000000000000000000000000000e4734100540065006d007000000014000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}" rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 352 rundll32.exe 352 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 352 rundll32.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1328 rundll32.exe 352 rundll32.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2728 wrote to memory of 352 2728 6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe 66 PID 2728 wrote to memory of 352 2728 6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe 66 PID 2728 wrote to memory of 352 2728 6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe 66 PID 352 wrote to memory of 1328 352 rundll32.exe 67 PID 352 wrote to memory of 1328 352 rundll32.exe 67 PID 352 wrote to memory of 1328 352 rundll32.exe 67 PID 352 wrote to memory of 4292 352 rundll32.exe 70 PID 352 wrote to memory of 4292 352 rundll32.exe 70 PID 352 wrote to memory of 4292 352 rundll32.exe 70 PID 352 wrote to memory of 4412 352 rundll32.exe 72 PID 352 wrote to memory of 4412 352 rundll32.exe 72 PID 352 wrote to memory of 4412 352 rundll32.exe 72 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe"C:\Users\Admin\AppData\Local\Temp\6f9d7b5e7e0638d304ef8d8e855847618cd9261412676254cfa3a46205a5765e.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2728 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Eoufdihy.dll,start2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:352 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 157213⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:1328
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C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:4292
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask3⤵PID:4412
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:5036
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
4.2MB
MD585ce367845ada4e42fb3a3a19f696fc0
SHA1ce225b395af88a0bdb5af5eba836b73c10d7ed1d
SHA256347e75e5d347f4858f9612f18590d0a67ff8af913006f1d356f411d125780245
SHA5122ad03ddb394d663f9e3d722a81e5b47a55bb40e07f3c785f99c03ae65fb24b520299b777432f3196cd964bd6db285bcfdbde324a1b454538b51a381cd2c9e53c
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Filesize
4.2MB
MD585ce367845ada4e42fb3a3a19f696fc0
SHA1ce225b395af88a0bdb5af5eba836b73c10d7ed1d
SHA256347e75e5d347f4858f9612f18590d0a67ff8af913006f1d356f411d125780245
SHA5122ad03ddb394d663f9e3d722a81e5b47a55bb40e07f3c785f99c03ae65fb24b520299b777432f3196cd964bd6db285bcfdbde324a1b454538b51a381cd2c9e53c
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Filesize
4.2MB
MD585ce367845ada4e42fb3a3a19f696fc0
SHA1ce225b395af88a0bdb5af5eba836b73c10d7ed1d
SHA256347e75e5d347f4858f9612f18590d0a67ff8af913006f1d356f411d125780245
SHA5122ad03ddb394d663f9e3d722a81e5b47a55bb40e07f3c785f99c03ae65fb24b520299b777432f3196cd964bd6db285bcfdbde324a1b454538b51a381cd2c9e53c