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Analysis
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max time kernel
149s -
max time network
101s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
08/06/2024, 23:29
Static task
static1
Behavioral task
behavioral1
Sample
234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe
Resource
win10v2004-20240508-en
General
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Target
234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe
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Size
78KB
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MD5
26acabb3b8322498bca03dd210938bd2
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SHA1
8ce549653255d3aa91e261780dadd05fd37bdfee
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SHA256
234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37
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SHA512
d01fc1819c280a5230820ea4e9663faade69f23d48576b36bdf6f37b9af3d91a36b8ca8efc98670c60c999b992dffae1e28bc2c18f68bc3553f7324fad17f8a1
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SSDEEP
1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWO0HNr:GhfxHNIreQm+HiXHNr
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 816 rundll32.exe -
Modifies system executable filetype association 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\¢«.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe File created C:\Windows\SysWOW64\¢«.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe File opened for modification C:\Windows\SysWOW64\notepad¢¬.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe File created C:\Windows\SysWOW64\notepad¢¬.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\system\rundll32.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe File created C:\Windows\system\rundll32.exe 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe -
Modifies registry class 15 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717889406" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717889406" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 28 IoCs
pid Process 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 816 rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 816 rundll32.exe 816 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4844 wrote to memory of 816 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 84 PID 4844 wrote to memory of 816 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 84 PID 4844 wrote to memory of 816 4844 234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe"C:\Users\Admin\AppData\Local\Temp\234fa5e48a57ab0b380f1c2fbe24b16d46b8d8fbed7bd76864d191f82c49db37.exe"1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Windows\system\rundll32.exeC:\Windows\system\rundll32.exe2⤵
- Executes dropped EXE
- Modifies system executable filetype association
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:816
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD5dcc511ff735b45492298131ac77705a9
SHA12adcf63eeb331fa04eacec888bef650e859d2d0c
SHA256ffab1346cae8ca5cc2b27018466808d1c4d351b94798b82bc2fc68ae161eed1e
SHA51270f6be70df17fbc05daefd8b12bde6d03ed5be4940e2e2c2d207b637071841d99f1a90cf42d2b7115c24cca02d8f182ae182e2fde7304dda5b8b83b6f369324d
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Filesize
76KB
MD5fca37ba6a796df88603af7268550db81
SHA1d1231574406451f87a2c958ce05777d6716c4a8d
SHA256234ad998202be45d8254972726598e0aa5f3f14e3ffde91814f09614de544b56
SHA5121bb9ca5b69ef09e2bce83b0013e244d701f19f27cfdb8ad99744a8cd4b7769bbf0d43aabd6ed59bb10f3e3cda0d617728234800887f6e83bb8481ef834247241