Analysis
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max time kernel
147s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07-04-2024 19:23
Static task
static1
Behavioral task
behavioral1
Sample
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe
Resource
win10v2004-20240226-en
General
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Target
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe
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Size
213KB
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MD5
9ad79306a03519180ea892724d2dd16f
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SHA1
6796558c7b6f94a2416634239f60114097977b49
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SHA256
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
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SHA512
ac7b2e45aa3ffefeb55375466419ff08cac947f6290ae67bdc5058e6853be46eb91f547243106cfaaa6d49898dbd134c4d935981ab7c3d346a77fc005eaa9971
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SSDEEP
6144:ztvBPnU1b7e9SQii1EkoNlhlrQ2ZrM2xh:Zv1nWdQP1EDhZPxh
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
Isass.exepid process 1232 Isass.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe -
Drops file in Program Files directory 1 IoCs
Processes:
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exedescription ioc process File created C:\Program Files (x86)\Microsoft Build\Isass.exe 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2608 1232 WerFault.exe Isass.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exeIsass.exepid process 4896 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe 4896 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe 1232 Isass.exe 1232 Isass.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exedescription pid process target process PID 4896 wrote to memory of 1232 4896 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe Isass.exe PID 4896 wrote to memory of 1232 4896 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe Isass.exe PID 4896 wrote to memory of 1232 4896 2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe Isass.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"C:\Users\Admin\AppData\Local\Temp\2396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693.exe"1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Program Files (x86)\Microsoft Build\Isass.exe"C:\Program Files (x86)\Microsoft Build\Isass.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1232 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 10203⤵
- Program crash
PID:2608
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1232 -ip 12321⤵PID:1796
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
213KB
MD59ad79306a03519180ea892724d2dd16f
SHA16796558c7b6f94a2416634239f60114097977b49
SHA2562396410e36864797e34181b94fba161f106f27a5128dc648d8564cf6c5834693
SHA512ac7b2e45aa3ffefeb55375466419ff08cac947f6290ae67bdc5058e6853be46eb91f547243106cfaaa6d49898dbd134c4d935981ab7c3d346a77fc005eaa9971
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Filesize
5.3MB
MD59df77f7f13189d4b002c32ace44d96a0
SHA109d55f56ff2ca919696c8227f08cbb47400652ef
SHA2565d12e9992dbab0e878278433fc9973cbd4522811faf44cfd04c9065535782e7e
SHA512643c82f59b8dca88f03d641dc7d42541cfa0c3dabaacaacd1a423a43fc246cfa48eae332d3be8b10fa9f4977bafc8875da96e744b864b8ac63db02a9691fd18c