Analysis
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max time kernel
149s -
max time network
132s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02-11-2022 04:46
Static task
static1
Behavioral task
behavioral1
Sample
24a3d9e65e52ca7808b8b54f4fd49293.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
24a3d9e65e52ca7808b8b54f4fd49293.exe
Resource
win10v2004-20220812-en
General
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Target
24a3d9e65e52ca7808b8b54f4fd49293.exe
-
Size
935KB
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MD5
24a3d9e65e52ca7808b8b54f4fd49293
-
SHA1
ba8ba4083f5f9e2f638f972c077c7358dd4db546
-
SHA256
bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
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SHA512
9d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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SSDEEP
24576:3X1fONoAqzW2tYD6yzNyMZq08dHr17VsYu8v8G68Eg:n1mNoRzyD6oyjHrtXu3X8E
Malware Config
Extracted
remcos
XP
xpremcuz300622.ddns.net:3542
-
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 1828 oos.exe 1696 oos.exe -
Loads dropped DLL 2 IoCs
Processes:
cmd.exepid process 1476 cmd.exe 1476 cmd.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
24a3d9e65e52ca7808b8b54f4fd49293.exeoos.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 24a3d9e65e52ca7808b8b54f4fd49293.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 24a3d9e65e52ca7808b8b54f4fd49293.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" 24a3d9e65e52ca7808b8b54f4fd49293.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ 24a3d9e65e52ca7808b8b54f4fd49293.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
24a3d9e65e52ca7808b8b54f4fd49293.exeoos.exedescription pid process target process PID 1980 set thread context of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1828 set thread context of 1696 1828 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 1696 oos.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
24a3d9e65e52ca7808b8b54f4fd49293.exe24a3d9e65e52ca7808b8b54f4fd49293.exeWScript.execmd.exeoos.exedescription pid process target process PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1980 wrote to memory of 1156 1980 24a3d9e65e52ca7808b8b54f4fd49293.exe 24a3d9e65e52ca7808b8b54f4fd49293.exe PID 1156 wrote to memory of 852 1156 24a3d9e65e52ca7808b8b54f4fd49293.exe WScript.exe PID 1156 wrote to memory of 852 1156 24a3d9e65e52ca7808b8b54f4fd49293.exe WScript.exe PID 1156 wrote to memory of 852 1156 24a3d9e65e52ca7808b8b54f4fd49293.exe WScript.exe PID 1156 wrote to memory of 852 1156 24a3d9e65e52ca7808b8b54f4fd49293.exe WScript.exe PID 852 wrote to memory of 1476 852 WScript.exe cmd.exe PID 852 wrote to memory of 1476 852 WScript.exe cmd.exe PID 852 wrote to memory of 1476 852 WScript.exe cmd.exe PID 852 wrote to memory of 1476 852 WScript.exe cmd.exe PID 1476 wrote to memory of 1828 1476 cmd.exe oos.exe PID 1476 wrote to memory of 1828 1476 cmd.exe oos.exe PID 1476 wrote to memory of 1828 1476 cmd.exe oos.exe PID 1476 wrote to memory of 1828 1476 cmd.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe PID 1828 wrote to memory of 1696 1828 oos.exe oos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\24a3d9e65e52ca7808b8b54f4fd49293.exe"C:\Users\Admin\AppData\Local\Temp\24a3d9e65e52ca7808b8b54f4fd49293.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\24a3d9e65e52ca7808b8b54f4fd49293.exe"C:\Users\Admin\AppData\Local\Temp\24a3d9e65e52ca7808b8b54f4fd49293.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
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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
935KB
MD524a3d9e65e52ca7808b8b54f4fd49293
SHA1ba8ba4083f5f9e2f638f972c077c7358dd4db546
SHA256bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
SHA5129d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
935KB
MD524a3d9e65e52ca7808b8b54f4fd49293
SHA1ba8ba4083f5f9e2f638f972c077c7358dd4db546
SHA256bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
SHA5129d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
935KB
MD524a3d9e65e52ca7808b8b54f4fd49293
SHA1ba8ba4083f5f9e2f638f972c077c7358dd4db546
SHA256bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
SHA5129d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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\Users\Admin\AppData\Roaming\oos.exeFilesize
935KB
MD524a3d9e65e52ca7808b8b54f4fd49293
SHA1ba8ba4083f5f9e2f638f972c077c7358dd4db546
SHA256bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
SHA5129d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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\Users\Admin\AppData\Roaming\oos.exeFilesize
935KB
MD524a3d9e65e52ca7808b8b54f4fd49293
SHA1ba8ba4083f5f9e2f638f972c077c7358dd4db546
SHA256bf5a377899f6233ee48281997d6c23ae42f78319f6368e946ffa78de01fa307d
SHA5129d88d1455ad1760a60fca2951209bfed16ee9b7b171d7a7e1f7460325aa16b32dfbd0a3e3c943b77d5820ce52e769672d7bb4109e01687064428e330e670cd2d
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memory/852-77-0x0000000000000000-mapping.dmp
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memory/1156-63-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1156-60-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1156-65-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1156-66-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1156-67-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1156-68-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1156-70-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1156-72-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1156-73-0x000000000043168C-mapping.dmp
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memory/1156-76-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1156-61-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1156-78-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1476-81-0x0000000000000000-mapping.dmp
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memory/1696-103-0x000000000043168C-mapping.dmp
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memory/1696-109-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1696-108-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1696-107-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1828-87-0x00000000002F0000-0x00000000003E0000-memory.dmpFilesize
960KB
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memory/1828-89-0x0000000004ED0000-0x0000000004FB4000-memory.dmpFilesize
912KB
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memory/1828-85-0x0000000000000000-mapping.dmp
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memory/1980-56-0x0000000005190000-0x0000000005274000-memory.dmpFilesize
912KB
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memory/1980-54-0x0000000000900000-0x00000000009F0000-memory.dmpFilesize
960KB
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memory/1980-57-0x0000000000430000-0x0000000000446000-memory.dmpFilesize
88KB
-
memory/1980-55-0x0000000075981000-0x0000000075983000-memory.dmpFilesize
8KB
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memory/1980-58-0x0000000007FA0000-0x0000000008050000-memory.dmpFilesize
704KB
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memory/1980-59-0x00000000049F0000-0x0000000004A6A000-memory.dmpFilesize
488KB