Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
22/06/2024, 01:41
General
- Target INV WJD000030036000137675999, pdf.scr
- Size 612KB
- Sample240622-b35sbs1fkf
- SHA256 64c73b41940ad0345b978a0118d9811e5dff411c1c7fd21425eda73066a5bbe1
Malware Config
Extracted
-
remcos
-
2.7.2 Pro
-
expectation
-
talented.hopto.org:9512
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audio_folder
MicRecords
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audio_path
%AppData%
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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
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delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
-
install_path
%AppData%
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keylog_crypt
false
-
keylog_file
logs.dat
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keylog_flag
false
-
keylog_folder
remcos
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keylog_path
%AppData%
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mouse_option
false
-
mutex
Remcos-OZC9SO
-
screenshot_crypt
false
-
screenshot_flag
false
-
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
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take_screenshot_title
wikipedia;solitaire;
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.
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\INV WJD000030036000137675999, pdf.scr"C:\Users\Admin\AppData\Local\Temp\INV WJD000030036000137675999, pdf.scr" /S1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nnoCzQFaYC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA57.tmp"2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"{path}"2⤵
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmpBA57.tmp
memory/556-8-0x0000000075320000-0x0000000075AD0000-memory.dmp
memory/556-1-0x0000000000860000-0x00000000008FE000-memory.dmp
memory/556-3-0x00000000051D0000-0x0000000005262000-memory.dmp
memory/556-4-0x00000000051C0000-0x00000000051CA000-memory.dmp
memory/556-5-0x0000000075320000-0x0000000075AD0000-memory.dmp
memory/556-6-0x000000000BC20000-0x000000000BCBC000-memory.dmp
memory/556-2-0x00000000056E0000-0x0000000005C84000-memory.dmp
memory/556-7-0x000000000BB90000-0x000000000BBA2000-memory.dmp
memory/556-9-0x000000000BCC0000-0x000000000BD0C000-memory.dmp
memory/556-0-0x000000007532E000-0x000000007532F000-memory.dmp
memory/556-18-0x0000000075320000-0x0000000075AD0000-memory.dmp
memory/3348-16-0x0000000000400000-0x0000000000421000-memory.dmp
memory/3348-17-0x0000000000400000-0x0000000000421000-memory.dmp
memory/3348-13-0x0000000000400000-0x0000000000421000-memory.dmp
memory/3348-18-0x0000000000400000-0x0000000000421000-memory.dmp
memory/3348-19-0x0000000000400000-0x0000000000421000-memory.dmp