Analysis
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max time kernel
151s -
max time network
168s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
22-10-2022 06:18
Static task
static1
Behavioral task
behavioral1
Sample
fd0e549414dc04399f330542472c54b1.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
fd0e549414dc04399f330542472c54b1.exe
Resource
win10v2004-20220812-en
General
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Target
fd0e549414dc04399f330542472c54b1.exe
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Size
1.1MB
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MD5
fd0e549414dc04399f330542472c54b1
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SHA1
4480c47022f9318f8745a7c9ed276df235303c3a
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SHA256
fccf5521a09be0f003c6415ee7c87cd98cd109511ef7f79990e4386fcca0ae25
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SHA512
e42ba3f00ffc01327ae17b0661fefd84ea54a1b160997f24b90b62ce9341e4adbddc5d879bf56e13ff35083c60a209ffe7e539d5fc0215dcf197f66cb8a0e69d
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SSDEEP
24576:IX+kYOD14qz/3ohrxSco/oQVQ64Wbuf3oIauxPpLnSlF:KYOD14SQQ0fPo7u7nkF
Malware Config
Extracted
remcos
XP
xpremcuz300622.ddns.net:3542
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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
oos.exe
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delete_file
false
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hide_file
true
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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
remcos
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mouse_option
false
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mutex
Remcos-MMP2I7
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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
kkl
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Executes dropped EXE 2 IoCs
Processes:
oos.exeoos.exepid process 2160 oos.exe 4672 oos.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
fd0e549414dc04399f330542472c54b1.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation fd0e549414dc04399f330542472c54b1.exe Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation WScript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
oos.exefd0e549414dc04399f330542472c54b1.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" oos.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ fd0e549414dc04399f330542472c54b1.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" fd0e549414dc04399f330542472c54b1.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ fd0e549414dc04399f330542472c54b1.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" fd0e549414dc04399f330542472c54b1.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" oos.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ oos.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
fd0e549414dc04399f330542472c54b1.exeoos.exedescription pid process target process PID 4380 set thread context of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 2160 set thread context of 4672 2160 oos.exe oos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
Processes:
fd0e549414dc04399f330542472c54b1.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings fd0e549414dc04399f330542472c54b1.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 4672 oos.exe -
Suspicious use of WriteProcessMemory 33 IoCs
Processes:
fd0e549414dc04399f330542472c54b1.exefd0e549414dc04399f330542472c54b1.exeWScript.execmd.exeoos.exedescription pid process target process PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 4380 wrote to memory of 2984 4380 fd0e549414dc04399f330542472c54b1.exe fd0e549414dc04399f330542472c54b1.exe PID 2984 wrote to memory of 4264 2984 fd0e549414dc04399f330542472c54b1.exe WScript.exe PID 2984 wrote to memory of 4264 2984 fd0e549414dc04399f330542472c54b1.exe WScript.exe PID 2984 wrote to memory of 4264 2984 fd0e549414dc04399f330542472c54b1.exe WScript.exe PID 4264 wrote to memory of 460 4264 WScript.exe cmd.exe PID 4264 wrote to memory of 460 4264 WScript.exe cmd.exe PID 4264 wrote to memory of 460 4264 WScript.exe cmd.exe PID 460 wrote to memory of 2160 460 cmd.exe oos.exe PID 460 wrote to memory of 2160 460 cmd.exe oos.exe PID 460 wrote to memory of 2160 460 cmd.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe PID 2160 wrote to memory of 4672 2160 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\fd0e549414dc04399f330542472c54b1.exe"C:\Users\Admin\AppData\Local\Temp\fd0e549414dc04399f330542472c54b1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fd0e549414dc04399f330542472c54b1.exe"C:\Users\Admin\AppData\Local\Temp\fd0e549414dc04399f330542472c54b1.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"4⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\oos.exeC:\Users\Admin\AppData\Roaming\oos.exe5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\oos.exe"C:\Users\Admin\AppData\Roaming\oos.exe"6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\install.vbsFilesize
398B
MD5a5d3440f90cbfae712166e20870eaed7
SHA1cc1e1a2945eb2ad475234344f7527ad9e9873647
SHA256960a570da95b8d16809cbcc18e8ca4d81e16cb666354ddc1d572daf93f291f02
SHA512d3136a280fbb326ccc5cb5ab1214aed8ccd6baa7f3f89ef9e0b5bf391a957dab2c121640bb056e6cbda0594f83133c4dbb4e1e2f0e290b44a401cd2cf8cfd4aa
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
1.1MB
MD5fd0e549414dc04399f330542472c54b1
SHA14480c47022f9318f8745a7c9ed276df235303c3a
SHA256fccf5521a09be0f003c6415ee7c87cd98cd109511ef7f79990e4386fcca0ae25
SHA512e42ba3f00ffc01327ae17b0661fefd84ea54a1b160997f24b90b62ce9341e4adbddc5d879bf56e13ff35083c60a209ffe7e539d5fc0215dcf197f66cb8a0e69d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
1.1MB
MD5fd0e549414dc04399f330542472c54b1
SHA14480c47022f9318f8745a7c9ed276df235303c3a
SHA256fccf5521a09be0f003c6415ee7c87cd98cd109511ef7f79990e4386fcca0ae25
SHA512e42ba3f00ffc01327ae17b0661fefd84ea54a1b160997f24b90b62ce9341e4adbddc5d879bf56e13ff35083c60a209ffe7e539d5fc0215dcf197f66cb8a0e69d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
1.1MB
MD5fd0e549414dc04399f330542472c54b1
SHA14480c47022f9318f8745a7c9ed276df235303c3a
SHA256fccf5521a09be0f003c6415ee7c87cd98cd109511ef7f79990e4386fcca0ae25
SHA512e42ba3f00ffc01327ae17b0661fefd84ea54a1b160997f24b90b62ce9341e4adbddc5d879bf56e13ff35083c60a209ffe7e539d5fc0215dcf197f66cb8a0e69d
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memory/460-146-0x0000000000000000-mapping.dmp
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memory/2160-147-0x0000000000000000-mapping.dmp
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memory/2984-142-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2984-138-0x0000000000000000-mapping.dmp
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memory/2984-140-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2984-141-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2984-139-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2984-144-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4264-143-0x0000000000000000-mapping.dmp
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memory/4380-136-0x0000000001040000-0x00000000010DC000-memory.dmpFilesize
624KB
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memory/4380-137-0x0000000008FB0000-0x0000000009016000-memory.dmpFilesize
408KB
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memory/4380-132-0x00000000007D0000-0x00000000008E6000-memory.dmpFilesize
1.1MB
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memory/4380-135-0x0000000005280000-0x000000000528A000-memory.dmpFilesize
40KB
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memory/4380-134-0x00000000052D0000-0x0000000005362000-memory.dmpFilesize
584KB
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memory/4380-133-0x0000000005950000-0x0000000005EF4000-memory.dmpFilesize
5.6MB
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memory/4672-150-0x0000000000000000-mapping.dmp
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memory/4672-153-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4672-154-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4672-155-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB