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Analysis
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max time kernel
149s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
01/06/2024, 19:29
Static task
static1
Behavioral task
behavioral1
Sample
39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe
Resource
win10v2004-20240508-en
General
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Target
39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe
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Size
82KB
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MD5
a077a15d1c76cceed1e456aa3d489a19
-
SHA1
31c01fb0872426529723c0923cb105d1eaf756c5
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SHA256
39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860
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SHA512
16b2124eb85a3898a7e9f106fff172a0aa168779ce26a2c4b9346bcda2b958de9edb64869c743ee5f3300b62f052f59f44a83b234d24f916b61d340ae385dda7
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SSDEEP
1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOXKpHr:GhfxHNIreQm+HiAKpHr
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2696 rundll32.exe -
Loads dropped DLL 2 IoCs
pid Process 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe -
Modifies system executable filetype association 2 TTPs 5 IoCs
description ioc Process 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 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\SysWOW64\notepad¢¬.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe File opened for modification C:\Windows\SysWOW64\¢«.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe File created C:\Windows\SysWOW64\¢«.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe File opened for modification C:\Windows\SysWOW64\notepad¢¬.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\system\rundll32.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe File created C:\Windows\system\rundll32.exe 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe -
Modifies registry class 15 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.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\exefile\shell\open\command 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1717270178" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1717270178" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2696 rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 2696 rundll32.exe 2696 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28 PID 1636 wrote to memory of 2696 1636 39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.exe"C:\Users\Admin\AppData\Local\Temp\39474d3299f50b0f8a7c7370b77237279d572f719259759b34caa18b23105860.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:1636 -
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:2696
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD5dab0fd4bed3d4af8a0565f565daa47d7
SHA1dd6fedfd22c992838b0e72ec6bcb0292db08a3db
SHA25609aa515ef3c920b28a13b6a1ed8ffdbd286bca022a7ab1d6cfda6110f4977c88
SHA512f05b00540b099e3fa1d57bcd93b08a151ee216a512e12f9d9b0490d1d3a97997a766d3158aa092245959a7bcd89b5bde082ed4729a92ff04afcf3c451851fa0f
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Filesize
76KB
MD559289e15b542cd1489061d6dafa7c86d
SHA1df9efacf903f045d15a061459f72bfc506de6e65
SHA256482ef96ede19f8ed35ae7a2d67b05e134a1654a51fdac17960e5195ae1714d77
SHA51223d3b4972a8218297269d97fdf67a17ce99f8be16f79ad710c00efaf49aa36744db7df687cad6a3eba78d4ffd7c2584fa6d6996dc1a31f01bc0fd7f4bd2e7fa6