Analysis
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max time kernel
120s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
09/11/2024, 00:01
Static task
static1
Behavioral task
behavioral1
Sample
1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe
Resource
win10v2004-20241007-en
General
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Target
1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe
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Size
211KB
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MD5
cba407a414f71048711865525583a320
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SHA1
6722724f204ef6bd9a3937e04c4b2ab8a644d8b1
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SHA256
1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dcc
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SHA512
1f00e7a3a33bdafb71dc0d74f9b646b555b6b733da47f5978061118c48f382023d0b9014217651bca07d7fa2112f038a1c16960c60f3283a3b292cf347a62fcc
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SSDEEP
3072:EPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9YgntnH:9rTfUHeeSKOS9ccFKk3Y9t9YyH
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4744 Isass.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe" 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe" 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Isass.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4648 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe 4648 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe 4744 Isass.exe 4744 Isass.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4648 wrote to memory of 4744 4648 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe 85 PID 4648 wrote to memory of 4744 4648 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe 85 PID 4648 wrote to memory of 4744 4648 1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe"C:\Users\Admin\AppData\Local\Temp\1cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dccN.exe"1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\Users\Public\Microsoft Build\Isass.exe"C:\Users\Public\Microsoft Build\Isass.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4744
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
731KB
MD5e10d4b7a6adf1aafba381a2a88bfb50b
SHA114e38a0c03ecadac18063a9e8c8ec84295352531
SHA256d9d2e84d27db85f76e8eb4316f258460fdc2977286b4f344026181109c4f72bd
SHA5124fbc9242f0fb14dbbe83ad3bb6962f2baa45ef716d67c927508b78fe176cca64075a9474e3c3716916e332166355f68e86d70b277274bc1bb4ae7a726b3aa160
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Filesize
211KB
MD5cba407a414f71048711865525583a320
SHA16722724f204ef6bd9a3937e04c4b2ab8a644d8b1
SHA2561cb4224c524447bf801b2b19e23f48f9ad083bbbc9f89c24d418e213f99b6dcc
SHA5121f00e7a3a33bdafb71dc0d74f9b646b555b6b733da47f5978061118c48f382023d0b9014217651bca07d7fa2112f038a1c16960c60f3283a3b292cf347a62fcc