Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 01:28
Behavioral task
behavioral1
Sample
FDA_CERT.exe
Resource
win7-20220414-en
General
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Target
FDA_CERT.exe
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Size
371KB
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MD5
9c547767c3059a4aa991b4b4413725bb
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SHA1
fd83c2cf73a959255d01abca9d681af4c62d5dbf
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SHA256
246fb765947ed62ef616f5f714642ff0db639983582c0fa2cbab9ad251669b78
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SHA512
1a3e2250804bc524750cdf3517b51af04e6988bc080a2d35468fc2e16758b6cd8970ff416ce0a009cbda387b31aaa0e698e8e5d1aba3f60c6110e069e4c1b1b7
Malware Config
Extracted
remcos
1.7 Pro
Host
kmt.duckdns.org:3039
kmt-2.duckdns.org:3039
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audio_folder
audio
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audio_path
%AppData%
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audio_record_time
5
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connect_delay
0
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connect_interval
5
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copy_file
remcos.exe
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copy_folder
remcos
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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
false
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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
remcos
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keylog_path
%AppData%
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mouse_option
false
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mutex
remcos_vejtzxohypibcpz
-
screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screens
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screenshot_path
%AppData%
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screenshot_time
1
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startup_value
remcos
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take_screenshot_option
false
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take_screenshot_time
5
- take_screenshot_title
Signatures
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Suspicious use of SetThreadContext 1 IoCs
Processes:
FDA_CERT.exedescription pid process target process PID 1900 set thread context of 568 1900 FDA_CERT.exe MSBuild.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
FDA_CERT.exepid process 1900 FDA_CERT.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
FDA_CERT.exedescription pid process Token: SeDebugPrivilege 1900 FDA_CERT.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
FDA_CERT.exepid process 1900 FDA_CERT.exe 1900 FDA_CERT.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
FDA_CERT.exedescription pid process target process PID 1900 wrote to memory of 836 1900 FDA_CERT.exe schtasks.exe PID 1900 wrote to memory of 836 1900 FDA_CERT.exe schtasks.exe PID 1900 wrote to memory of 836 1900 FDA_CERT.exe schtasks.exe PID 1900 wrote to memory of 836 1900 FDA_CERT.exe schtasks.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe PID 1900 wrote to memory of 568 1900 FDA_CERT.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\FDA_CERT.exe"C:\Users\Admin\AppData\Local\Temp\FDA_CERT.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HXAjzs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp23B7.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"{path}"2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp23B7.tmpFilesize
1KB
MD564b84d558f2513df22c5d9d2e1999121
SHA12d38ab08ec3e97d1f3a5439f25293daeff7cdc64
SHA25611dd7830034cbba2928401b42a50e6cead6cad114aca337bfb88e456ec60a01a
SHA5128cac1092d788a7aed6a0e1e0a425e15179b727a91838da66532568ae26395400b81bdf8a96924e949266e9404a02074c1fd5a8eda43cb6e38a746a7c5995b5a6
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memory/568-60-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-59-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-62-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-65-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-64-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-66-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-67-0x000000000040FD88-mapping.dmp
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memory/568-70-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/568-71-0x0000000000400000-0x0000000000417000-memory.dmpFilesize
92KB
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memory/836-56-0x0000000000000000-mapping.dmp
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memory/1900-55-0x0000000074B90000-0x000000007513B000-memory.dmpFilesize
5.7MB
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memory/1900-58-0x0000000000B39000-0x0000000000B4A000-memory.dmpFilesize
68KB
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memory/1900-54-0x0000000076011000-0x0000000076013000-memory.dmpFilesize
8KB