Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
28/12/2022, 20:30
Static task
static1
Behavioral task
behavioral1
Sample
65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe
Resource
win10-20220812-en
General
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Target
65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe
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Size
1014KB
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MD5
66f3be346f6f8dcf6a0736a4e8b7a0c5
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SHA1
78cb2d2076744ac362fc7b61ae67825ffd4637f1
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SHA256
65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3
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SHA512
02cfeb00773fa6c7046d274179456539b908d6cfa31d5fb1874f67a1558ff7d89052bca8dcba446812be585f3a59ee5d18dce15d00bfe2a369d7aebd549beac2
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SSDEEP
24576:wzwgZWDC0AAScPnSNIM+jZJbKQCf3pkgi30:zgZcC0VSgnVZj040
Malware Config
Signatures
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Blocklisted process makes network request 3 IoCs
flow pid Process 1 4800 rundll32.exe 2 4800 rundll32.exe 11 4800 rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 4800 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 4800 set thread context of 4220 4800 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 20 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision 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\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Revision rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 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\1\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz rundll32.exe -
Modifies registry class 24 IoCs
description ioc Process 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 Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU 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 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 = 4e003100000000009c55e9ab100054656d7000003a0009000400efbe0c5553889c55e9ab2e0000000000000000000000000000000000000000000000000021afd400540065006d007000000014000000 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 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 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\0\0\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\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\1\Shell 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 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 (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\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\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\0\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\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\NodeSlots = 02 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\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 rundll32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4220 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3528 wrote to memory of 4800 3528 65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe 66 PID 3528 wrote to memory of 4800 3528 65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe 66 PID 3528 wrote to memory of 4800 3528 65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe 66 PID 4800 wrote to memory of 4220 4800 rundll32.exe 67 PID 4800 wrote to memory of 4220 4800 rundll32.exe 67 PID 4800 wrote to memory of 4220 4800 rundll32.exe 67
Processes
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C:\Users\Admin\AppData\Local\Temp\65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe"C:\Users\Admin\AppData\Local\Temp\65e77f0b890a7318e972e75c555ca04d5a5f0929b1deb03ac82720ab1f27edb3.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3528 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qfyshwqueqdpai.tmp",Dioeeedresq2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4800 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 140283⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:4220
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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:4608
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
792KB
MD5822d3ead416a1a85cb96e65f65cd5ae2
SHA1af32b69e2835d1cacdadb97ae6dfafccc32d1837
SHA25672bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d
SHA51248d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260
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Filesize
792KB
MD5822d3ead416a1a85cb96e65f65cd5ae2
SHA1af32b69e2835d1cacdadb97ae6dfafccc32d1837
SHA25672bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d
SHA51248d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260