Analysis
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max time kernel
152s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system -
submitted
12/11/2023, 06:48
Static task
static1
Behavioral task
behavioral1
Sample
b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
Resource
win10v2004-20231023-en
General
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Target
b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe
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Size
81KB
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MD5
7833a4ae985c56c64bb62456b4cbda71
-
SHA1
cf320643e8c48cf753fc8c4992526625e1c086c6
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SHA256
b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485
-
SHA512
e5edcc105922a6774d3d5153dc72a714ec66af98e65b8e5e9a32f98f29f9a4c1fb5018e27d3b8e9f36d31de50b214d97eac1b85ff1eb1978e7ef9702b5bab604
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SSDEEP
1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOoA1cfYf9:GhfxHNIreQm+HiXA1cfYf9
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 416 rundll32.exe -
Modifies system executable filetype association 2 TTPs 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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 -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\¢«.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe File created C:\Windows\SysWOW64\¢«.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe File opened for modification C:\Windows\SysWOW64\notepad¢¬.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe File created C:\Windows\SysWOW64\notepad¢¬.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\system\rundll32.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe File created C:\Windows\system\rundll32.exe b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe -
Modifies registry class 15 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\MSipv b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1699771749" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv rundll32.exe 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" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" rundll32.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\txtfile\shell\open\command b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1699771749" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 28 IoCs
pid Process 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 416 rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 416 rundll32.exe 416 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4780 wrote to memory of 416 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 91 PID 4780 wrote to memory of 416 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 91 PID 4780 wrote to memory of 416 4780 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe"C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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:4780 -
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:416
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
82KB
MD519b5f2715d8522c5a9fb4c3668d9f17a
SHA18eb3a1b67a0ff9f650fc1f43866513f5a272742a
SHA2566e06ebdb2af86033742c9747ffa78aef524392fa175905b67430d677caea8b16
SHA512853ef802c344a47198f023e8b34a148500b606147774b4dc5d0efbe3ef854bb2e5e5b59506986518b7cc1be3f78b8c10f6a10aa6d0123cfff73c7d46e11e59c8
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Filesize
75KB
MD5090d6ab884b36a98b9e34d85129833f2
SHA11d80a00431e58872f1ec6256102097db0ea9434b
SHA2564f92162d5d5f9fabb7a7280c466e0cda06e755a59c3232f89506ee61d3764622
SHA512f51726ddb6bde4016ffbf6cc9227c12246aad720af2b68d39c0a3b4017854aff005a501cb06b51e01e967abaab5350af934a50142eaf0e62ef7178ff4b41cbd5
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Filesize
75KB
MD5090d6ab884b36a98b9e34d85129833f2
SHA11d80a00431e58872f1ec6256102097db0ea9434b
SHA2564f92162d5d5f9fabb7a7280c466e0cda06e755a59c3232f89506ee61d3764622
SHA512f51726ddb6bde4016ffbf6cc9227c12246aad720af2b68d39c0a3b4017854aff005a501cb06b51e01e967abaab5350af934a50142eaf0e62ef7178ff4b41cbd5