Analysis
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max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
06/06/2024, 20:36
Static task
static1
Behavioral task
behavioral1
Sample
2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe
Resource
win10v2004-20240508-en
General
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Target
2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe
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Size
86KB
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MD5
a175c6b86c4abf8b97557daef940cb0d
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SHA1
7110f8120225288a152ec9078541fb40434056fd
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SHA256
2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba
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SHA512
bcddd4d7f0984ae354e89097a3015058fb5952365e1026214bcf4bfc511f8917300230baaa3ce262b6af6d25259215dcb37eb7068832c646b05990f85aa850c9
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SSDEEP
768:ZZKM11gG4ChfiPO0rfz0shcUypMC5/VKhZyg3Xf:eMDgG4ChfiPOefgsOUqQwg
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Syssrc32 = "C:\\Windows\\Syssrc32.exe" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\fndfst32 = "C:\\Windows\\System\\fndfst32.exe" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Explorer Shell = "C:\\Windows\\System\\Explorer.exe" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\System applets = "C:\\Windows\\System\\applets.exe" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe -
Drops file in Windows directory 14 IoCs
description ioc Process File created C:\Windows\System\mplayerw.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\System\Explorer.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\System\mplayerw.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\Syssrc32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\System\fndfst32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\System\Explorer.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\Help\intret.cnt 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\System\applets.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\System\applets.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\System\fndfst32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\Help\intret.cnt 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File opened for modification C:\Windows\System\Sysexp32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\System\Sysexp32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe File created C:\Windows\Syssrc32.exe 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2760 2984 WerFault.exe 27 -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\Explore = "%SystemRoot%\\SysWow64\\NOTEPAD.EXE %1" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Windows\\System\\Sysexp32.exe %1" 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2984 wrote to memory of 2760 2984 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe 28 PID 2984 wrote to memory of 2760 2984 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe 28 PID 2984 wrote to memory of 2760 2984 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe 28 PID 2984 wrote to memory of 2760 2984 2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe"C:\Users\Admin\AppData\Local\Temp\2b8620bb5c22ce747db82ad31287ee5c9db897d83fa9be75db6ea2e746b537ba.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2984 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 922⤵
- Program crash
PID:2760
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
98KB
MD50301adddc1061e328bd8925d0bf79900
SHA1f87e342a6d5df4a6968b5b751548d7e6de5762b7
SHA2560614cf528a59024bba7a6d5bd678c948a8e9637a93ef54119d07624db510c244
SHA512ec4176d0688fcb559025b6c7fe6a90503d3613f9f27807405f3549974f57cabbcaa4e04d0feefe48cf22676620464cc0563616fe7485371f3ee5b8bb56517e52