Analysis
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max time kernel
150s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
13/02/2024, 18:33
Static task
static1
Behavioral task
behavioral1
Sample
99d87e79ff9e2838b3f31d61b7aac31b.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
99d87e79ff9e2838b3f31d61b7aac31b.exe
Resource
win10v2004-20231222-en
General
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Target
99d87e79ff9e2838b3f31d61b7aac31b.exe
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Size
3.7MB
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MD5
99d87e79ff9e2838b3f31d61b7aac31b
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SHA1
a2faa1bbc0662c4a9ff57941bf277859c0ab4a10
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SHA256
c66e1bd487a4b6cca57a595ee53dc7a0e6620a35cf00c0100fe2f0b61b91e992
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SHA512
2f42df8839156d06a800b5d71a8a98065236d8463c44ae363bec892da6cb87395c99343b0ee2004c8e2af5fa41c9ad121da7650efe1aba490053ef306f2ea1be
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SSDEEP
98304:eWQ/IGJuz7nOdXvQEeiFKQ8Ktn0oN9zKgSTVgeovKkA5RPtyn7K:eAG8yNIEeDKtnlN9mgShg+PYn2
Malware Config
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 1548 netsh.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LiveMessenger = "C:\\Windows\\msnmsgrs.exe" 99d87e79ff9e2838b3f31d61b7aac31b.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\sendedenviou2.txt 99d87e79ff9e2838b3f31d61b7aac31b.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\msnmsgrs.exe 99d87e79ff9e2838b3f31d61b7aac31b.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4640 wrote to memory of 1548 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 83 PID 4640 wrote to memory of 1548 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 83 PID 4640 wrote to memory of 1548 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 83 PID 4640 wrote to memory of 2116 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 84 PID 4640 wrote to memory of 2116 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 84 PID 4640 wrote to memory of 2116 4640 99d87e79ff9e2838b3f31d61b7aac31b.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\99d87e79ff9e2838b3f31d61b7aac31b.exe"C:\Users\Admin\AppData\Local\Temp\99d87e79ff9e2838b3f31d61b7aac31b.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4640 -
C:\Windows\SysWOW64\netsh.exenetsh firewall set opmode disable2⤵
- Modifies Windows Firewall
PID:1548
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C:\Windows\SysWOW64\cmd.execmd /c "%windir%\help\configer\aatqz.exe /nogui %windir%\help\configer\ttolq.txt2⤵PID:2116
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1