Analysis
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max time kernel
141s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05/03/2024, 00:49
Behavioral task
behavioral1
Sample
b35cd39d4d132e5fdd1561644f1d7f4c.exe
Resource
win7-20240221-en
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
b35cd39d4d132e5fdd1561644f1d7f4c.exe
Resource
win10v2004-20240226-en
5 signatures
150 seconds
General
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Target
b35cd39d4d132e5fdd1561644f1d7f4c.exe
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Size
53KB
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MD5
b35cd39d4d132e5fdd1561644f1d7f4c
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SHA1
c250277669c65a5a8ca6af6676b94a7c0af8826a
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SHA256
994302eb33e3da38c27165b7ee9166f880faf46e353d4f21ae5d4d2f832494b0
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SHA512
85c789e69643aae65c429956add19c72e79ef2d3114ec62e4238339c33c39cbfd2a6db761c95b003e74eab68d8e6699e8b6e5e810e8ad820019a131d48d5d260
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SSDEEP
768:N/EdeVWoFxMq08vcGz+eIPKjKsiYiReftGZ4m7ai5zqqhdGlT18RuvTx2wexIdeV:N/R108EBKY4fU6m7p5zqYiaobz
Score
10/10
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "userinit.exe,C:\\Windows\\system32\\ntos.exe," b35cd39d4d132e5fdd1561644f1d7f4c.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\ntos.exe b35cd39d4d132e5fdd1561644f1d7f4c.exe File created C:\Windows\SysWOW64\ntos.exe b35cd39d4d132e5fdd1561644f1d7f4c.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1308 b35cd39d4d132e5fdd1561644f1d7f4c.exe 1308 b35cd39d4d132e5fdd1561644f1d7f4c.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1308 b35cd39d4d132e5fdd1561644f1d7f4c.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b35cd39d4d132e5fdd1561644f1d7f4c.exe"C:\Users\Admin\AppData\Local\Temp\b35cd39d4d132e5fdd1561644f1d7f4c.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1308