Analysis
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max time kernel
150s -
max time network
151s -
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 17:33
Static task
static1
Behavioral task
behavioral1
Sample
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe
Resource
win10v2004-20220812-en
General
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Target
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe
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Size
934KB
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MD5
9bd821ba65b89710d2d81c7a7b98ab5d
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SHA1
cbdc6446729b60601f7c288bc063cd9cc216f925
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SHA256
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8
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SHA512
30ad861b9015a201cec5e6a88ce6cba3e03459f1c709ef50c89505de96e5760e7c1647dc8382751fffc3c9ed843b539114b52051e8d564c6fde7fad08436c5a4
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SSDEEP
24576:xcCEmyVj6jI43L84UytM00todtTQxRjU/oe:xcCRI6jIepUy+ZtmdGR
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 1536 oos.exe 4836 oos.exe 4840 oos.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation WScript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exeoos.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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 -
Suspicious use of SetThreadContext 2 IoCs
Processes:
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exeoos.exedescription pid process target process PID 2180 set thread context of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 1536 set thread context of 4840 1536 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:
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
oos.exepid process 1536 oos.exe 1536 oos.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
oos.exedescription pid process Token: SeDebugPrivilege 1536 oos.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 4840 oos.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exeWScript.execmd.exeoos.exedescription pid process target process PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 2180 wrote to memory of 3204 2180 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe PID 3204 wrote to memory of 1936 3204 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe WScript.exe PID 3204 wrote to memory of 1936 3204 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe WScript.exe PID 3204 wrote to memory of 1936 3204 99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe WScript.exe PID 1936 wrote to memory of 3080 1936 WScript.exe cmd.exe PID 1936 wrote to memory of 3080 1936 WScript.exe cmd.exe PID 1936 wrote to memory of 3080 1936 WScript.exe cmd.exe PID 3080 wrote to memory of 1536 3080 cmd.exe oos.exe PID 3080 wrote to memory of 1536 3080 cmd.exe oos.exe PID 3080 wrote to memory of 1536 3080 cmd.exe oos.exe PID 1536 wrote to memory of 4836 1536 oos.exe oos.exe PID 1536 wrote to memory of 4836 1536 oos.exe oos.exe PID 1536 wrote to memory of 4836 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe PID 1536 wrote to memory of 4840 1536 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe"C:\Users\Admin\AppData\Local\Temp\99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.exe"C:\Users\Admin\AppData\Local\Temp\99d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8.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
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
934KB
MD59bd821ba65b89710d2d81c7a7b98ab5d
SHA1cbdc6446729b60601f7c288bc063cd9cc216f925
SHA25699d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8
SHA51230ad861b9015a201cec5e6a88ce6cba3e03459f1c709ef50c89505de96e5760e7c1647dc8382751fffc3c9ed843b539114b52051e8d564c6fde7fad08436c5a4
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD59bd821ba65b89710d2d81c7a7b98ab5d
SHA1cbdc6446729b60601f7c288bc063cd9cc216f925
SHA25699d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8
SHA51230ad861b9015a201cec5e6a88ce6cba3e03459f1c709ef50c89505de96e5760e7c1647dc8382751fffc3c9ed843b539114b52051e8d564c6fde7fad08436c5a4
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD59bd821ba65b89710d2d81c7a7b98ab5d
SHA1cbdc6446729b60601f7c288bc063cd9cc216f925
SHA25699d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8
SHA51230ad861b9015a201cec5e6a88ce6cba3e03459f1c709ef50c89505de96e5760e7c1647dc8382751fffc3c9ed843b539114b52051e8d564c6fde7fad08436c5a4
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD59bd821ba65b89710d2d81c7a7b98ab5d
SHA1cbdc6446729b60601f7c288bc063cd9cc216f925
SHA25699d28200203baac82a7253419526711f38d7ecb1a6098f243c8656adc72ef6d8
SHA51230ad861b9015a201cec5e6a88ce6cba3e03459f1c709ef50c89505de96e5760e7c1647dc8382751fffc3c9ed843b539114b52051e8d564c6fde7fad08436c5a4
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memory/1536-146-0x0000000000000000-mapping.dmp
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memory/1936-142-0x0000000000000000-mapping.dmp
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memory/2180-132-0x00000000005B0000-0x00000000006A0000-memory.dmpFilesize
960KB
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memory/2180-133-0x00000000056E0000-0x0000000005C84000-memory.dmpFilesize
5.6MB
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memory/2180-134-0x0000000005070000-0x0000000005102000-memory.dmpFilesize
584KB
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memory/2180-136-0x0000000008CD0000-0x0000000008D6C000-memory.dmpFilesize
624KB
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memory/2180-135-0x0000000005040000-0x000000000504A000-memory.dmpFilesize
40KB
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memory/3080-145-0x0000000000000000-mapping.dmp
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memory/3204-141-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3204-143-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3204-140-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3204-139-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3204-138-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/3204-137-0x0000000000000000-mapping.dmp
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memory/4836-149-0x0000000000000000-mapping.dmp
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memory/4840-151-0x0000000000000000-mapping.dmp
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memory/4840-154-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4840-155-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4840-156-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4840-157-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB