Analysis
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max time kernel
150s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20231023-en -
resource tags
arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-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 2336 rundll32.exe -
Loads dropped DLL 2 IoCs
pid Process 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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\" %*" rundll32.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 (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command 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 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 (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" 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 Key created \REGISTRY\MACHINE\Software\Classes\MSipv 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 = "1699771743" rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1699771743" 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\exefile\shell\open\command b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.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.exe %1" b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2336 rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 2336 rundll32.exe 2336 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28 PID 2296 wrote to memory of 2336 2296 b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe"C:\Users\Admin\AppData\Local\Temp\b9dc1e58009bd04353c3d9ec524578ace60d0dd49709b356c36c969c3b787485.exe"1⤵
- Loads dropped DLL
- 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:2296 -
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:2336
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
78KB
MD5795794cb666c87e81396cb7de6c6b8c5
SHA1699d92173c4c4c043deb820abcccb171ab53b28e
SHA25656bed55f552c151f1b77f639171edf45f0aa5b890a79c27a2bb6f24fa5fd847f
SHA5121d3701be68769a1a921dcb316b30b4c21d0699d822fce11bf27a5f32958159bb512e0e5a0213b9015cf8323885e63d8bd95ad1877d192d4e93069d7850fe3e53
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Filesize
80KB
MD517e6f86e4a81d5b9d5e3c8d2069bb942
SHA10685bb8d2e07e9166d117bdf4a8a6871494e5fb2
SHA256775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152
SHA512658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e
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Filesize
80KB
MD517e6f86e4a81d5b9d5e3c8d2069bb942
SHA10685bb8d2e07e9166d117bdf4a8a6871494e5fb2
SHA256775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152
SHA512658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e
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Filesize
80KB
MD517e6f86e4a81d5b9d5e3c8d2069bb942
SHA10685bb8d2e07e9166d117bdf4a8a6871494e5fb2
SHA256775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152
SHA512658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e
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Filesize
80KB
MD517e6f86e4a81d5b9d5e3c8d2069bb942
SHA10685bb8d2e07e9166d117bdf4a8a6871494e5fb2
SHA256775670ef0630c4982965382da287cbbaad8f2cef51156c5bcbc9889bf74fe152
SHA512658874a2b1054a2ba53b923d404a057fbed719f19713b5966ecad10ddfa6f2108a5f0e9f85dd5cfbab90828273bc05dab0714e547674e9a7560836878634289e