Analysis
- max time kernel
150s - max time network
150s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
23/12/2022, 04:27
General
- Target TNT Original Document PDF.exe
- Size 1015KB
- Sample221223-e2417afh25
- SHA256 a84ffc6423f9efc057fcffadbf537056debc6b79d3d81a7dc4b16bd61a87b6ba
Malware Config
Extracted
-
remcos
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RemoteHost
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51.75.209.245:2404
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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
-
copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
-
hide_file
false
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hide_keylog_file
false
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install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-CMFPLR
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screenshot_crypt
false
-
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
Remcos
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 29 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OyZygBSHhZBG.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OyZygBSHhZBG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBCCB.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"C:\Users\Admin\AppData\Local\Temp\TNT Original Document PDF.exe"2⤵
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpBCCB.tmp
d93f411851d7c929.customDestinations-ms
memory/1652-55-0x00000000758C1000-0x00000000758C3000-memory.dmp
memory/1652-56-0x0000000000340000-0x0000000000350000-memory.dmp
memory/1652-57-0x0000000000490000-0x000000000049A000-memory.dmp
memory/1652-58-0x0000000005910000-0x00000000059C2000-memory.dmp
memory/1652-54-0x00000000008C0000-0x00000000009C4000-memory.dmp
memory/1652-66-0x00000000059C0000-0x0000000005A3C000-memory.dmp
memory/1692-72-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-88-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-67-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-68-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-70-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-89-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-73-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-74-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-77-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-75-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-79-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1692-83-0x0000000000400000-0x000000000047F000-memory.dmp
memory/1728-84-0x000000006F360000-0x000000006F90B000-memory.dmp
memory/1728-86-0x000000006F360000-0x000000006F90B000-memory.dmp
memory/1736-85-0x000000006F360000-0x000000006F90B000-memory.dmp
memory/1736-87-0x000000006F360000-0x000000006F90B000-memory.dmp