Analysis
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max time kernel
148s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
01-11-2022 15:10
Static task
static1
Behavioral task
behavioral1
Sample
706ac294f54bfd2a28d03f1c79165f9b.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
706ac294f54bfd2a28d03f1c79165f9b.exe
Resource
win10v2004-20220812-en
General
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Target
706ac294f54bfd2a28d03f1c79165f9b.exe
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Size
934KB
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MD5
706ac294f54bfd2a28d03f1c79165f9b
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SHA1
3d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
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SHA256
d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
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SHA512
aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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SSDEEP
24576:hYjlN8ydjXnTVJQU/i35XN8JxiNGIJui/+:hYjlN9jXnTQUi59+xiNA1
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 1252 oos.exe 1256 oos.exe 3856 oos.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
706ac294f54bfd2a28d03f1c79165f9b.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 706ac294f54bfd2a28d03f1c79165f9b.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation WScript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
706ac294f54bfd2a28d03f1c79165f9b.exeoos.exedescription ioc process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ 706ac294f54bfd2a28d03f1c79165f9b.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 706ac294f54bfd2a28d03f1c79165f9b.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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 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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 706ac294f54bfd2a28d03f1c79165f9b.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 706ac294f54bfd2a28d03f1c79165f9b.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
706ac294f54bfd2a28d03f1c79165f9b.exeoos.exedescription pid process target process PID 3196 set thread context of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 1252 set thread context of 3856 1252 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:
706ac294f54bfd2a28d03f1c79165f9b.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings 706ac294f54bfd2a28d03f1c79165f9b.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
oos.exepid process 1252 oos.exe 1252 oos.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
oos.exedescription pid process Token: SeDebugPrivilege 1252 oos.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 3856 oos.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
706ac294f54bfd2a28d03f1c79165f9b.exe706ac294f54bfd2a28d03f1c79165f9b.exeWScript.execmd.exeoos.exedescription pid process target process PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 3196 wrote to memory of 596 3196 706ac294f54bfd2a28d03f1c79165f9b.exe 706ac294f54bfd2a28d03f1c79165f9b.exe PID 596 wrote to memory of 3432 596 706ac294f54bfd2a28d03f1c79165f9b.exe WScript.exe PID 596 wrote to memory of 3432 596 706ac294f54bfd2a28d03f1c79165f9b.exe WScript.exe PID 596 wrote to memory of 3432 596 706ac294f54bfd2a28d03f1c79165f9b.exe WScript.exe PID 3432 wrote to memory of 1636 3432 WScript.exe cmd.exe PID 3432 wrote to memory of 1636 3432 WScript.exe cmd.exe PID 3432 wrote to memory of 1636 3432 WScript.exe cmd.exe PID 1636 wrote to memory of 1252 1636 cmd.exe oos.exe PID 1636 wrote to memory of 1252 1636 cmd.exe oos.exe PID 1636 wrote to memory of 1252 1636 cmd.exe oos.exe PID 1252 wrote to memory of 1256 1252 oos.exe oos.exe PID 1252 wrote to memory of 1256 1252 oos.exe oos.exe PID 1252 wrote to memory of 1256 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe PID 1252 wrote to memory of 3856 1252 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\706ac294f54bfd2a28d03f1c79165f9b.exe"C:\Users\Admin\AppData\Local\Temp\706ac294f54bfd2a28d03f1c79165f9b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\706ac294f54bfd2a28d03f1c79165f9b.exe"C:\Users\Admin\AppData\Local\Temp\706ac294f54bfd2a28d03f1c79165f9b.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
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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memory/596-137-0x0000000000000000-mapping.dmp
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memory/596-138-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/596-139-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/596-140-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/596-142-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1252-145-0x0000000000000000-mapping.dmp
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memory/1256-148-0x0000000000000000-mapping.dmp
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memory/1636-144-0x0000000000000000-mapping.dmp
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memory/3196-132-0x0000000000350000-0x0000000000440000-memory.dmpFilesize
960KB
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memory/3196-136-0x0000000008A70000-0x0000000008B0C000-memory.dmpFilesize
624KB
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memory/3196-135-0x0000000004DE0000-0x0000000004DEA000-memory.dmpFilesize
40KB
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memory/3196-134-0x0000000004E10000-0x0000000004EA2000-memory.dmpFilesize
584KB
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memory/3196-133-0x00000000054C0000-0x0000000005A64000-memory.dmpFilesize
5.6MB
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memory/3432-141-0x0000000000000000-mapping.dmp
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memory/3856-150-0x0000000000000000-mapping.dmp
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memory/3856-154-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3856-153-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3856-155-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3856-156-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB