Analysis
- max time kernel
155s - max time network
160s - platform
windows10-2004_x64 - resource
win10v2004-20220722-en - resource tags
- submitted
01/08/2022, 17:59
General
- Target SecuriteInfo.com.Trojan.DownLoaderNET.445.691.exe
- Size 32KB
- Sample220801-wkp95sffc7
- SHA256 a6537d9b3bb7c3c0b0eba20d79d14352fee7da894bd73590dc1bd267d3e2b48b
Malware Config
Extracted
-
remcos
-
RemoteHost
-
172.94.88.13:5888
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
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keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-10AETM
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screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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screenshot_path
%AppData%
-
screenshot_time
10
-
startup_value
Remcos
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownLoaderNET.445.691.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownLoaderNET.445.691.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- 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" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwA=2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1376-132-0x0000000000080000-0x000000000008E000-memory.dmp
memory/1376-133-0x0000000005660000-0x0000000005682000-memory.dmp
memory/3388-135-0x00000000047F0000-0x0000000004826000-memory.dmp
memory/3388-136-0x0000000004E70000-0x0000000005498000-memory.dmp
memory/3388-137-0x0000000005570000-0x00000000055D6000-memory.dmp
memory/3388-138-0x00000000055E0000-0x0000000005646000-memory.dmp
memory/3388-139-0x0000000005DC0000-0x0000000005DDE000-memory.dmp
memory/3388-140-0x00000000074C0000-0x0000000007B3A000-memory.dmp
memory/3388-141-0x0000000006250000-0x000000000626A000-memory.dmp
memory/4528-143-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4528-144-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4528-145-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4528-146-0x0000000000400000-0x000000000047E000-memory.dmp
memory/4528-147-0x0000000000400000-0x000000000047E000-memory.dmp