Analysis
- max time kernel
148s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
24/06/2024, 23:31
General
- Target Invoicepdf.exe
- Size 2.7MB
- Sample240624-3hpddsxhna
- SHA256 a9b71bd91eac64c98a1519e907789fc4aec0bd6de47f643acf462cd4aff8aa8f
Malware Config
Extracted
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remcos
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RemoteHost
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192.3.243.155:7643
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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
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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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
-
mouse_option
false
-
mutex
Rmc-KXS0YK
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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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take_screenshot_option
false
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take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
- Nirsoft 2 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- 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 10 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 36 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe"C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\Invoicepdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- 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\qAJNCAc.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qAJNCAc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6A91.tmp"2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe"C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exeC:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\trxzbqjlqlf"3⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exeC:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\trxzbqjlqlf"3⤵
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exeC:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\etdscjunetxzfiz"3⤵
- Suspicious use of UnmapMainImage
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 124⤵
- Program crash
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-
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C:\Users\Admin\AppData\Local\Temp\Invoicepdf.exeC:\Users\Admin\AppData\Local\Temp\Invoicepdf.exe /stext "C:\Users\Admin\AppData\Local\Temp\ooicvbfgsbpdqwnsvi"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 952 -ip 9521⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
logs.dat
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_clcb3tx5.3uy.ps1
tmp6A91.tmp
trxzbqjlqlf
memory/952-90-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1728-10-0x0000000009850000-0x0000000009928000-memory.dmp
memory/1728-5-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/1728-7-0x0000000008D30000-0x0000000008DCC000-memory.dmp
memory/1728-8-0x0000000008D10000-0x0000000008D22000-memory.dmp
memory/1728-9-0x0000000009E80000-0x0000000009EA2000-memory.dmp
memory/1728-55-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/1728-11-0x0000000009990000-0x00000000099A0000-memory.dmp
memory/1728-12-0x00000000099D0000-0x00000000099DC000-memory.dmp
memory/1728-13-0x000000000A140000-0x000000000A200000-memory.dmp
memory/1728-6-0x0000000008930000-0x0000000008C84000-memory.dmp
memory/1728-4-0x0000000005700000-0x000000000570A000-memory.dmp
memory/1728-0-0x000000007501E000-0x000000007501F000-memory.dmp
memory/1728-1-0x0000000000FE0000-0x00000000012A0000-memory.dmp
memory/1728-2-0x0000000006130000-0x00000000066D4000-memory.dmp
memory/1728-3-0x0000000005C80000-0x0000000005D12000-memory.dmp
memory/2052-89-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2052-95-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2052-91-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2136-85-0x0000000007EA0000-0x000000000851A000-memory.dmp
memory/2136-100-0x0000000007AE0000-0x0000000007B76000-memory.dmp
memory/2136-18-0x0000000004F90000-0x0000000004FC6000-memory.dmp
memory/2136-44-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/2136-19-0x0000000005710000-0x0000000005D38000-memory.dmp
memory/2136-114-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/2136-101-0x0000000007A60000-0x0000000007A71000-memory.dmp
memory/2136-75-0x00000000758A0000-0x00000000758EC000-memory.dmp
memory/2136-20-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/2136-86-0x0000000007860000-0x000000000787A000-memory.dmp
memory/2136-21-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/2136-96-0x00000000078D0000-0x00000000078DA000-memory.dmp
memory/2964-94-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2964-92-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2964-93-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3372-59-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-54-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-121-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-126-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-49-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-88-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-45-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-43-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-150-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-60-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-61-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-125-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-58-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-149-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-133-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-134-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-120-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3372-119-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3372-116-0x0000000010000000-0x0000000010019000-memory.dmp
memory/3372-141-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-142-0x0000000000400000-0x0000000000482000-memory.dmp
memory/3372-46-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4152-63-0x00000000758A0000-0x00000000758EC000-memory.dmp
memory/4152-113-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4152-106-0x00000000072B0000-0x00000000072B8000-memory.dmp
memory/4152-105-0x00000000072D0000-0x00000000072EA000-memory.dmp
memory/4152-104-0x00000000071D0000-0x00000000071E4000-memory.dmp
memory/4152-103-0x00000000071C0000-0x00000000071CE000-memory.dmp
memory/4152-73-0x0000000006E10000-0x0000000006E2E000-memory.dmp
memory/4152-74-0x0000000006E40000-0x0000000006EE3000-memory.dmp
memory/4152-62-0x0000000006BD0000-0x0000000006C02000-memory.dmp
memory/4152-56-0x0000000005C50000-0x0000000005C6E000-memory.dmp
memory/4152-57-0x0000000005CE0000-0x0000000005D2C000-memory.dmp
memory/4152-33-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4152-25-0x0000000005630000-0x0000000005696000-memory.dmp
memory/4152-31-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4152-24-0x0000000004D50000-0x0000000004DB6000-memory.dmp
memory/4152-22-0x0000000075010000-0x00000000757C0000-memory.dmp