Analysis
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max time kernel
148s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
15-08-2022 19:39
Static task
static1
Behavioral task
behavioral1
Sample
7f93ebca40acd75da0b0a599e0eb5276.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
7f93ebca40acd75da0b0a599e0eb5276.exe
Resource
win10v2004-20220812-en
General
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Target
7f93ebca40acd75da0b0a599e0eb5276.exe
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Size
888KB
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MD5
7f93ebca40acd75da0b0a599e0eb5276
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SHA1
255df64f2dc464e5e89cd20d633605a5c02e9500
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SHA256
3639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
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SHA512
9956bc0e6dc29df89bcaffdc6f925709314657e0dbd4484ec66cd41f1825fc692d71cc733fe5d2d724a40073f66672bc396f461c81993324e7f731457fbc9ab5
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 3 IoCs
Processes:
oos.exeoos.exeoos.exepid process 3308 oos.exe 3664 oos.exe 5116 oos.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
7f93ebca40acd75da0b0a599e0eb5276.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 7f93ebca40acd75da0b0a599e0eb5276.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.exe7f93ebca40acd75da0b0a599e0eb5276.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\ 7f93ebca40acd75da0b0a599e0eb5276.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\"" 7f93ebca40acd75da0b0a599e0eb5276.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ 7f93ebca40acd75da0b0a599e0eb5276.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 7f93ebca40acd75da0b0a599e0eb5276.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:
7f93ebca40acd75da0b0a599e0eb5276.exeoos.exedescription pid process target process PID 4624 set thread context of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 3308 set thread context of 5116 3308 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:
7f93ebca40acd75da0b0a599e0eb5276.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings 7f93ebca40acd75da0b0a599e0eb5276.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
7f93ebca40acd75da0b0a599e0eb5276.exeoos.exepid process 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 3308 oos.exe 3308 oos.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
7f93ebca40acd75da0b0a599e0eb5276.exeoos.exedescription pid process Token: SeDebugPrivilege 4624 7f93ebca40acd75da0b0a599e0eb5276.exe Token: SeDebugPrivilege 3308 oos.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 5116 oos.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
7f93ebca40acd75da0b0a599e0eb5276.exe7f93ebca40acd75da0b0a599e0eb5276.exeWScript.execmd.exeoos.exedescription pid process target process PID 4624 wrote to memory of 4888 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4888 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4888 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4624 wrote to memory of 4812 4624 7f93ebca40acd75da0b0a599e0eb5276.exe 7f93ebca40acd75da0b0a599e0eb5276.exe PID 4812 wrote to memory of 3532 4812 7f93ebca40acd75da0b0a599e0eb5276.exe WScript.exe PID 4812 wrote to memory of 3532 4812 7f93ebca40acd75da0b0a599e0eb5276.exe WScript.exe PID 4812 wrote to memory of 3532 4812 7f93ebca40acd75da0b0a599e0eb5276.exe WScript.exe PID 3532 wrote to memory of 608 3532 WScript.exe cmd.exe PID 3532 wrote to memory of 608 3532 WScript.exe cmd.exe PID 3532 wrote to memory of 608 3532 WScript.exe cmd.exe PID 608 wrote to memory of 3308 608 cmd.exe oos.exe PID 608 wrote to memory of 3308 608 cmd.exe oos.exe PID 608 wrote to memory of 3308 608 cmd.exe oos.exe PID 3308 wrote to memory of 3664 3308 oos.exe oos.exe PID 3308 wrote to memory of 3664 3308 oos.exe oos.exe PID 3308 wrote to memory of 3664 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe PID 3308 wrote to memory of 5116 3308 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.exe"C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.exe"C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.exe"C:\Users\Admin\AppData\Local\Temp\7f93ebca40acd75da0b0a599e0eb5276.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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
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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
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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
888KB
MD57f93ebca40acd75da0b0a599e0eb5276
SHA1255df64f2dc464e5e89cd20d633605a5c02e9500
SHA2563639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
SHA5129956bc0e6dc29df89bcaffdc6f925709314657e0dbd4484ec66cd41f1825fc692d71cc733fe5d2d724a40073f66672bc396f461c81993324e7f731457fbc9ab5
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
888KB
MD57f93ebca40acd75da0b0a599e0eb5276
SHA1255df64f2dc464e5e89cd20d633605a5c02e9500
SHA2563639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
SHA5129956bc0e6dc29df89bcaffdc6f925709314657e0dbd4484ec66cd41f1825fc692d71cc733fe5d2d724a40073f66672bc396f461c81993324e7f731457fbc9ab5
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
888KB
MD57f93ebca40acd75da0b0a599e0eb5276
SHA1255df64f2dc464e5e89cd20d633605a5c02e9500
SHA2563639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
SHA5129956bc0e6dc29df89bcaffdc6f925709314657e0dbd4484ec66cd41f1825fc692d71cc733fe5d2d724a40073f66672bc396f461c81993324e7f731457fbc9ab5
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
888KB
MD57f93ebca40acd75da0b0a599e0eb5276
SHA1255df64f2dc464e5e89cd20d633605a5c02e9500
SHA2563639a796055969929b98a8a34fde77d9a0f79242ec6f012fea2dc14a98752a32
SHA5129956bc0e6dc29df89bcaffdc6f925709314657e0dbd4484ec66cd41f1825fc692d71cc733fe5d2d724a40073f66672bc396f461c81993324e7f731457fbc9ab5
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memory/608-143-0x0000000000000000-mapping.dmp
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memory/3308-144-0x0000000000000000-mapping.dmp
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memory/3532-140-0x0000000000000000-mapping.dmp
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memory/3664-147-0x0000000000000000-mapping.dmp
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memory/4624-133-0x0000000005740000-0x00000000057D2000-memory.dmpFilesize
584KB
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memory/4624-134-0x0000000005A80000-0x0000000005B1C000-memory.dmpFilesize
624KB
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memory/4624-132-0x0000000000A40000-0x0000000000B24000-memory.dmpFilesize
912KB
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memory/4812-136-0x0000000000000000-mapping.dmp
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memory/4812-137-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4812-139-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4812-138-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4812-141-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4888-135-0x0000000000000000-mapping.dmp
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memory/5116-152-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/5116-149-0x0000000000000000-mapping.dmp
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memory/5116-153-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/5116-154-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/5116-155-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB