Analysis
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max time kernel
149s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
03-04-2023 12:57
Static task
static1
Behavioral task
behavioral1
Sample
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Resource
win10v2004-20230221-en
General
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Target
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
-
Size
1020KB
-
MD5
3d87e610c1e0855bac84e1a66632afd5
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SHA1
998433cdb154c12a50aac7fd3f174bb2da931496
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SHA256
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
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SHA512
e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
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SSDEEP
24576:fkkU1nC/RckNg7iDLB/a18rYgaJvw4HTGFmF:fk3C/RckuODL1EgaZwCTV
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 1720 oos.exe 2012 oos.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 1644 cmd.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
oos.exe6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\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-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe Set value (str) \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe Key created \REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exeoos.exedescription pid process target process PID 1748 set thread context of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1720 set thread context of 2012 1720 oos.exe oos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 2012 oos.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exeWScript.execmd.exeoos.exedescription pid process target process PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 1748 wrote to memory of 752 1748 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe PID 752 wrote to memory of 1788 752 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe WScript.exe PID 752 wrote to memory of 1788 752 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe WScript.exe PID 752 wrote to memory of 1788 752 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe WScript.exe PID 752 wrote to memory of 1788 752 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe WScript.exe PID 1788 wrote to memory of 1644 1788 WScript.exe cmd.exe PID 1788 wrote to memory of 1644 1788 WScript.exe cmd.exe PID 1788 wrote to memory of 1644 1788 WScript.exe cmd.exe PID 1788 wrote to memory of 1644 1788 WScript.exe cmd.exe PID 1644 wrote to memory of 1720 1644 cmd.exe oos.exe PID 1644 wrote to memory of 1720 1644 cmd.exe oos.exe PID 1644 wrote to memory of 1720 1644 cmd.exe oos.exe PID 1644 wrote to memory of 1720 1644 cmd.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe PID 1720 wrote to memory of 2012 1720 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"2⤵
- Adds Run key to start application
- 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⤵
- 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⤵
- Loads dropped DLL
- 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:\ProgramData\remcos\logs.datFilesize
144B
MD5bb4e35c019f990c20c2cd86d089f95fb
SHA1323be710d2240ca5488fda311820725fad0b693b
SHA25628ae3ef99727e63bdebaf59f14e79ab4b31108b6cb6d120b0c6cc5cb5ce06485
SHA5123ff0ace842f3954cf7878a842a70df37fcbd002ef9ced5286815aace0e32f42216c73e9e5d32c9faae1c80963b8b0e3be10189e0507bb10fd355286873e291cc
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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
1020KB
MD53d87e610c1e0855bac84e1a66632afd5
SHA1998433cdb154c12a50aac7fd3f174bb2da931496
SHA2566f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
SHA512e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
1020KB
MD53d87e610c1e0855bac84e1a66632afd5
SHA1998433cdb154c12a50aac7fd3f174bb2da931496
SHA2566f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
SHA512e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
1020KB
MD53d87e610c1e0855bac84e1a66632afd5
SHA1998433cdb154c12a50aac7fd3f174bb2da931496
SHA2566f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
SHA512e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
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\Users\Admin\AppData\Roaming\oos.exeFilesize
1020KB
MD53d87e610c1e0855bac84e1a66632afd5
SHA1998433cdb154c12a50aac7fd3f174bb2da931496
SHA2566f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
SHA512e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
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memory/752-64-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/752-62-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-63-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-79-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-65-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-66-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-67-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-68-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-61-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-70-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-72-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/752-76-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1720-87-0x0000000004D00000-0x0000000004D40000-memory.dmpFilesize
256KB
-
memory/1720-86-0x0000000004D00000-0x0000000004D40000-memory.dmpFilesize
256KB
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memory/1720-85-0x0000000000530000-0x0000000000544000-memory.dmpFilesize
80KB
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memory/1720-84-0x0000000000880000-0x0000000000984000-memory.dmpFilesize
1.0MB
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memory/1748-57-0x0000000004CC0000-0x0000000004D00000-memory.dmpFilesize
256KB
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memory/1748-58-0x00000000007B0000-0x00000000007BC000-memory.dmpFilesize
48KB
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memory/1748-59-0x00000000057E0000-0x00000000058D0000-memory.dmpFilesize
960KB
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memory/1748-60-0x0000000005140000-0x00000000051BE000-memory.dmpFilesize
504KB
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memory/1748-54-0x0000000001310000-0x0000000001414000-memory.dmpFilesize
1.0MB
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memory/1748-55-0x0000000004CC0000-0x0000000004D00000-memory.dmpFilesize
256KB
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memory/1748-56-0x0000000000480000-0x0000000000494000-memory.dmpFilesize
80KB
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memory/2012-103-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-104-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-100-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-101-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-105-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-106-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-109-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2012-112-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-113-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2012-118-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2012-119-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB