Analysis
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max time kernel
47s -
max time network
42s -
platform
windows7_x64 -
resource
win7-20220715-en -
resource tags
arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system -
submitted
25-07-2022 03:23
Static task
static1
Behavioral task
behavioral1
Sample
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe
Resource
win10v2004-20220722-en
General
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Target
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe
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Size
238KB
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MD5
2764767a2d1a56be8a9ecad34bc887e8
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SHA1
b43ecacac1cdc76d38b60d56220adf34bded0a26
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SHA256
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4
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SHA512
034b5da8f955550d7808329c3e83bf5a64535a6b52330076e9c0962b7b6a060f1d2c8243cd15f4546ebc0c9c4a3b4678dc89734f5fa22c0bdf342c9c7caf02c5
Malware Config
Signatures
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Loads dropped DLL 2 IoCs
Processes:
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exepid process 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.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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Drops file in Windows directory 1 IoCs
Processes:
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exedescription ioc process File opened for modification C:\Windows\win.ini 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1980 1480 WerFault.exe 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe -
Modifies registry class 2 IoCs
Processes:
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\VLC.CDAudio 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\VLC.CDAudio\ = "VLC CD Audio" 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exedescription pid process target process PID 1480 wrote to memory of 1980 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe WerFault.exe PID 1480 wrote to memory of 1980 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe WerFault.exe PID 1480 wrote to memory of 1980 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe WerFault.exe PID 1480 wrote to memory of 1980 1480 86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe WerFault.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe"C:\Users\Admin\AppData\Local\Temp\86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe"1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1480 -s 5002⤵
- Program crash
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\System.dllFilesize
12KB
MD50d7ad4f45dc6f5aa87f606d0331c6901
SHA148df0911f0484cbe2a8cdd5362140b63c41ee457
SHA2563eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
SHA512c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
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\Users\Admin\AppData\Local\Temp\sesquialteras.dllFilesize
44KB
MD51f1358b84492a98f8bbc71893b33db2c
SHA1cb9fafb0e6b03f96eaf7df5c54dfc5b4d98eca42
SHA25601f983122bccc667965bd7d5573efcfc15ff30bdc2cba34b02713e73089d3fd1
SHA5125cfc818dfe1c49cdc559909b0e41985c55f625294e12b150da422bc5b06df7793df15991b534d2efe7278871566682121bb452668837b3a39fd9b51298f90bf8
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memory/1480-54-0x0000000076311000-0x0000000076313000-memory.dmpFilesize
8KB
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memory/1480-57-0x0000000001D50000-0x0000000001D59000-memory.dmpFilesize
36KB
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memory/1480-63-0x0000000002370000-0x0000000002FBA000-memory.dmpFilesize
12.3MB
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memory/1480-65-0x0000000002370000-0x0000000002FBA000-memory.dmpFilesize
12.3MB
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memory/1980-64-0x0000000000000000-mapping.dmp