Analysis
- max time kernel
118s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
27/07/2024, 09:50
General
- Target b23537aaa971ac525acf0b7359c3f070N.exe
- Size 1.1MB
- Sample240727-lva8vsvdqf
- SHA256 03550c6a36f058711b8658422f63a2715f651132c72a6d6f6adcbc2165b56ae4
Malware Config
Extracted
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remcos
-
RemoteHost
-
107.175.229.139:8823
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
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copy_folder
Remcos
-
delete_file
false
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hide_file
false
-
hide_keylog_file
false
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install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-2BGC0K
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screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
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screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Detected Nirsoft tools 7 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
- NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 3 IoCs
Password recovery tool for various web browsers
- Drops startup file 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: MapViewOfSection 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 27 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe"C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'2⤵
- Drops startup file
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe"C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exeC:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe /stext "C:\Users\Admin\AppData\Local\Temp\udwiuqofuvyvkgn"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exeC:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe /stext "C:\Users\Admin\AppData\Local\Temp\wfkbvjyyidqinubkcu"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exeC:\Users\Admin\AppData\Local\Temp\b23537aaa971ac525acf0b7359c3f070N.exe /stext "C:\Users\Admin\AppData\Local\Temp\hzpmobjawlinxbxwtfijxw"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
__PSScriptPolicyTest_tmmudcie.mgd.ps1
udwiuqofuvyvkgn
memory/224-70-0x0000000000400000-0x0000000000478000-memory.dmp
memory/224-56-0x0000000000400000-0x0000000000478000-memory.dmp
memory/224-58-0x0000000000400000-0x0000000000478000-memory.dmp
memory/224-60-0x0000000000400000-0x0000000000478000-memory.dmp
memory/224-52-0x0000000000400000-0x0000000000478000-memory.dmp
memory/640-14-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-85-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-101-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-100-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-72-0x0000000010000000-0x0000000010019000-memory.dmp
memory/640-92-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-17-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-93-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-76-0x0000000010000000-0x0000000010019000-memory.dmp
memory/640-84-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-18-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-42-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-25-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-28-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-33-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-24-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-83-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-75-0x0000000010000000-0x0000000010019000-memory.dmp
memory/640-77-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-44-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-39-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-40-0x0000000000400000-0x0000000000482000-memory.dmp
memory/640-41-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2892-1-0x0000000000010000-0x0000000000136000-memory.dmp
memory/2892-38-0x0000000074E80000-0x0000000075630000-memory.dmp
memory/2892-2-0x0000000005230000-0x00000000057D4000-memory.dmp
memory/2892-6-0x0000000004D80000-0x0000000004E2E000-memory.dmp
memory/2892-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp
memory/2892-12-0x0000000004E50000-0x0000000004E58000-memory.dmp
memory/2892-7-0x0000000004EF0000-0x0000000004F8C000-memory.dmp
memory/2892-3-0x0000000004B70000-0x0000000004C02000-memory.dmp
memory/2892-4-0x0000000074E80000-0x0000000075630000-memory.dmp
memory/2892-5-0x0000000004C50000-0x0000000004C5A000-memory.dmp
memory/4180-68-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4180-63-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4180-62-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4436-8-0x0000000002600000-0x0000000002636000-memory.dmp
memory/4436-47-0x0000000006450000-0x0000000006472000-memory.dmp
memory/4436-10-0x0000000074E80000-0x0000000075630000-memory.dmp
memory/4436-11-0x0000000005400000-0x0000000005A28000-memory.dmp
memory/4436-9-0x0000000074E80000-0x0000000075630000-memory.dmp
memory/4436-15-0x00000000050E0000-0x0000000005146000-memory.dmp
memory/4436-51-0x0000000074E80000-0x0000000075630000-memory.dmp
memory/4436-13-0x0000000004F40000-0x0000000004F62000-memory.dmp
memory/4436-46-0x0000000006400000-0x000000000641A000-memory.dmp
memory/4436-45-0x0000000006490000-0x0000000006526000-memory.dmp
memory/4436-36-0x0000000005FC0000-0x000000000600C000-memory.dmp
memory/4436-35-0x0000000005F10000-0x0000000005F2E000-memory.dmp
memory/4436-34-0x0000000005A30000-0x0000000005D84000-memory.dmp
memory/4436-16-0x0000000005150000-0x00000000051B6000-memory.dmp
memory/5060-57-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5060-61-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5060-59-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5060-53-0x0000000000400000-0x0000000000462000-memory.dmp
memory/5060-67-0x0000000000400000-0x0000000000462000-memory.dmp