Analysis
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max time kernel
149s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
08-03-2023 12:43
Static task
static1
Behavioral task
behavioral1
Sample
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe
Resource
win10v2004-20230220-en
General
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Target
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe
-
Size
929KB
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MD5
1eee890ebe5e8b5d03a2fae63f791141
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SHA1
75b0c7cb4069b21b70794d25bd89a3d5bcac8205
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SHA256
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569
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SHA512
c806dc7c1b857c6823369fb104173243faf350a6f34af92d749b93fd6aad0061d3aa1c24d2e3951341d4c8c17b1c79507d39d0d447940352ead727454aac79ab
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SSDEEP
24576:eTsIBMNjnNNOhAe/S0uEpWBmlWDXBpYe0ZqaWcioykjEziYQp7dX:3glWDR/0UciRA
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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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
WScript.exead3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation WScript.exe Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe -
Executes dropped EXE 2 IoCs
Processes:
oos.exeoos.exepid process 4488 oos.exe 2720 oos.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exeoos.exedescription ioc process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe Key created \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exeoos.exedescription pid process target process PID 2192 set thread context of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 4488 set thread context of 2720 4488 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:
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
oos.exepid process 2720 oos.exe -
Suspicious use of WriteProcessMemory 33 IoCs
Processes:
ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exead3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exeWScript.execmd.exeoos.exedescription pid process target process PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2192 wrote to memory of 2320 2192 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe PID 2320 wrote to memory of 2248 2320 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe WScript.exe PID 2320 wrote to memory of 2248 2320 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe WScript.exe PID 2320 wrote to memory of 2248 2320 ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe WScript.exe PID 2248 wrote to memory of 1644 2248 WScript.exe cmd.exe PID 2248 wrote to memory of 1644 2248 WScript.exe cmd.exe PID 2248 wrote to memory of 1644 2248 WScript.exe cmd.exe PID 1644 wrote to memory of 4488 1644 cmd.exe oos.exe PID 1644 wrote to memory of 4488 1644 cmd.exe oos.exe PID 1644 wrote to memory of 4488 1644 cmd.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe PID 4488 wrote to memory of 2720 4488 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe"C:\Users\Admin\AppData\Local\Temp\ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569.exe"{path}"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"{path}"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
MD5269582b5fa14c0583e8f576de66e958e
SHA15191d0e2f8df486da4ee34d999157c6df4a16c50
SHA256dcc23e33be0f86670f47dc40eb6ed6e7d207798a25dc1d7a6da8bf92de12401d
SHA5126437cc5bb6e97f2af9a24ab75d3c2ff95f79c08cbdc2c0710a3ceb6e820d37293a7a7ee7c42afe0a8c3893b6490ebd0dc5bba69c54382fcf5e0756a1554f1f00
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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
929KB
MD51eee890ebe5e8b5d03a2fae63f791141
SHA175b0c7cb4069b21b70794d25bd89a3d5bcac8205
SHA256ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569
SHA512c806dc7c1b857c6823369fb104173243faf350a6f34af92d749b93fd6aad0061d3aa1c24d2e3951341d4c8c17b1c79507d39d0d447940352ead727454aac79ab
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
929KB
MD51eee890ebe5e8b5d03a2fae63f791141
SHA175b0c7cb4069b21b70794d25bd89a3d5bcac8205
SHA256ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569
SHA512c806dc7c1b857c6823369fb104173243faf350a6f34af92d749b93fd6aad0061d3aa1c24d2e3951341d4c8c17b1c79507d39d0d447940352ead727454aac79ab
-
C:\Users\Admin\AppData\Roaming\oos.exeFilesize
929KB
MD51eee890ebe5e8b5d03a2fae63f791141
SHA175b0c7cb4069b21b70794d25bd89a3d5bcac8205
SHA256ad3a4db849a64ea07922d63153d3381798b4450f28d8db82c95393a5f6aaa569
SHA512c806dc7c1b857c6823369fb104173243faf350a6f34af92d749b93fd6aad0061d3aa1c24d2e3951341d4c8c17b1c79507d39d0d447940352ead727454aac79ab
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memory/2192-137-0x0000000005870000-0x000000000587A000-memory.dmpFilesize
40KB
-
memory/2192-139-0x0000000005AE0000-0x0000000005AF0000-memory.dmpFilesize
64KB
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memory/2192-138-0x0000000005AE0000-0x0000000005AF0000-memory.dmpFilesize
64KB
-
memory/2192-136-0x0000000005980000-0x0000000005A1C000-memory.dmpFilesize
624KB
-
memory/2192-135-0x00000000058E0000-0x0000000005972000-memory.dmpFilesize
584KB
-
memory/2192-134-0x0000000005DF0000-0x0000000006394000-memory.dmpFilesize
5.6MB
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memory/2192-133-0x0000000000DD0000-0x0000000000EBE000-memory.dmpFilesize
952KB
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memory/2320-140-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2320-142-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2320-143-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2320-147-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2320-150-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-167-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-169-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-161-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-162-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-164-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-165-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-166-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/2720-192-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-168-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-160-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-174-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-175-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-177-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-191-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-183-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/2720-184-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/4488-155-0x0000000004D20000-0x0000000004D30000-memory.dmpFilesize
64KB
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memory/4488-156-0x0000000004D20000-0x0000000004D30000-memory.dmpFilesize
64KB