Analysis
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max time kernel
149s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
11-05-2024 01:45
Behavioral task
behavioral1
Sample
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe
Resource
win10v2004-20240508-en
General
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Target
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe
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Size
469KB
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MD5
bd8b7958eeae8d1adf54148d23079863
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SHA1
5b48f72267da36089181f175b3ea111dc6274377
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SHA256
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4
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SHA512
e494a21740da130d0f79dabde3611f78f5e3874cce59aee8203b1218466e58ac1a9e9483324b58a2c6ea4a7f07ced11497103fe393f931bba47956b7b1ed62e8
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SSDEEP
12288:Obmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSan9:uiLJbpI7I2WhQqZ7a9
Malware Config
Extracted
remcos
Nuevos
nuevosremcs.duckdns.org:9090
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
notepads.exe
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copy_folder
data
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
true
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install_path
%AppData%
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
notas
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mouse_option
false
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mutex
Rmc-LYXPNU
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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startup_value
system32
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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detects Windows exceutables potentially bypassing UAC using eventvwr.exe 1 IoCs
Processes:
resource yara_rule behavioral1/files/0x00330000000164a9-8.dat INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer -
Executes dropped EXE 1 IoCs
Processes:
notepads.exepid Process 3068 notepads.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid Process 2684 cmd.exe 2684 cmd.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exenotepads.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\data\\notepads.exe\"" aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\data\\notepads.exe\"" aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\data\\notepads.exe\"" notepads.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\system32 = "\"C:\\Users\\Admin\\AppData\\Roaming\\data\\notepads.exe\"" notepads.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
notepads.exepid Process 3068 notepads.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exeWScript.execmd.exedescription pid Process procid_target PID 1884 wrote to memory of 1984 1884 aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe 28 PID 1884 wrote to memory of 1984 1884 aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe 28 PID 1884 wrote to memory of 1984 1884 aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe 28 PID 1884 wrote to memory of 1984 1884 aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe 28 PID 1984 wrote to memory of 2684 1984 WScript.exe 29 PID 1984 wrote to memory of 2684 1984 WScript.exe 29 PID 1984 wrote to memory of 2684 1984 WScript.exe 29 PID 1984 wrote to memory of 2684 1984 WScript.exe 29 PID 2684 wrote to memory of 3068 2684 cmd.exe 31 PID 2684 wrote to memory of 3068 2684 cmd.exe 31 PID 2684 wrote to memory of 3068 2684 cmd.exe 31 PID 2684 wrote to memory of 3068 2684 cmd.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe"C:\Users\Admin\AppData\Local\Temp\aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1884 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"2⤵
- Suspicious use of WriteProcessMemory
PID:1984 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\data\notepads.exe"3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684 -
C:\Users\Admin\AppData\Roaming\data\notepads.exeC:\Users\Admin\AppData\Roaming\data\notepads.exe4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:3068
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
144B
MD5a71b397184525b553416c6c83f4770c0
SHA1a0b80e9d89b7c28a69c36dcfbd39b18a06d5aabc
SHA256bea557b881d4ac75ec3812dd883237cad531c963be60f6e2d8e46244ad9d8d3e
SHA512785969cbcb707eaceb591bc35b569629f66cefdabb170b512d013cbf3c60f7e5216071f0cfa503bf1a0042f384499f7f9aca12165b6b412ab53cd5ce7e98983f
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Filesize
418B
MD51653e8468b0d0cd87a484261da3a898b
SHA1ab798bd56e8dfebf82b4feda4e1549778d19848b
SHA2561bf4eaa1b06f079565ca6ea81082736efd1e25d6465c353ad992ba8c38940c3f
SHA5125df77f64350879e22a6b9f018bdd8fcf90920cc9f4026ed9bf733b5e965214abd8c3643b211b2f814cd2a9e016f0c15762eaee133feef6ed5c37bdd66ff7be2f
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Filesize
469KB
MD5bd8b7958eeae8d1adf54148d23079863
SHA15b48f72267da36089181f175b3ea111dc6274377
SHA256aa4f91582c090e99b67390b61edf78df4525c6f2125c38a2a0b1a925bbe7fab4
SHA512e494a21740da130d0f79dabde3611f78f5e3874cce59aee8203b1218466e58ac1a9e9483324b58a2c6ea4a7f07ced11497103fe393f931bba47956b7b1ed62e8