Analysis
- max time kernel
147s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/04/2024, 15:57
General
- Target 0028BGL880-2024.PDF.exe
- Size 1.6MB
- Sample240403-tdxpjafe98
- SHA256 f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63
Malware Config
Extracted
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remcos
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RemoteHost
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127.0.0.1:45671
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127.0.0.1:55677
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192.3.101.8:55677
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192.3.101.8:45671
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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
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mouse_option
false
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mutex
Rmc-2P1XPK
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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
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- Remcos
Remcos is a closed-source remote control and surveillance software.
- ModiLoader Second Stage 1 IoCs
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 3 IoCs
Password recovery tool for various web browsers
- Nirsoft 7 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 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
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
- 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 29 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd /c mkdir "\\?\C:\Windows "2⤵
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C:\Windows\SysWOW64\cmd.execmd /c mkdir "\\?\C:\Windows \System32"2⤵
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C:\Windows\SysWOW64\cmd.execmd /c "C:\Windows \System32\4847402.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows \System32\4847402.exe"C:\Windows \System32\4847402.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.execmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\extrac32.exeC:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\\Users\\Public\\Libraries\\Dkesuvii.PIF2⤵
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C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exeC:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\ydnhtulprahkywcqllmpcrrannpazs"2⤵
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exeC:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\jgsstmwqfizxjcyudwgqewmjouhbsdzrf"2⤵
- Accesses Microsoft Outlook accounts
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C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exeC:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\taxku"2⤵
- 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_dnfkoiyd.oqs.ps1
ydnhtulprahkywcqllmpcrrannpazs
4847402.exe
netutils.dll
KDECO.bat
memory/1228-24-0x00000270FEAA0000-0x00000270FEAB0000-memory.dmp
memory/1228-32-0x00007FFFA2D50000-0x00007FFFA3811000-memory.dmp
memory/1228-29-0x00000270FEAA0000-0x00000270FEAB0000-memory.dmp
memory/1228-19-0x00000270FEA10000-0x00000270FEA32000-memory.dmp
memory/1228-23-0x00007FFFA2D50000-0x00007FFFA3811000-memory.dmp
memory/1628-73-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1628-70-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1628-56-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1628-65-0x0000000000400000-0x0000000000462000-memory.dmp
memory/1792-55-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1792-63-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1792-80-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1792-61-0x0000000000400000-0x0000000000478000-memory.dmp
memory/1792-72-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2616-15-0x00000000613C0000-0x00000000613E3000-memory.dmp
memory/2952-89-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/2952-44-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-52-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-54-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-0-0x0000000000840000-0x0000000000841000-memory.dmp
memory/2952-40-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-129-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-50-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-38-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-49-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-46-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-4-0x0000000000400000-0x00000000005AF000-memory.dmp
memory/2952-128-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-106-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-105-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-51-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-43-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-83-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/2952-2-0x0000000002990000-0x0000000003990000-memory.dmp
memory/2952-86-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/2952-88-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/2952-87-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/2952-41-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-90-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-93-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-94-0x00000000152B0000-0x00000000162B0000-memory.dmp
memory/2952-1-0x0000000002990000-0x0000000003990000-memory.dmp
memory/2952-100-0x0000000033D80000-0x0000000033D99000-memory.dmp
memory/4020-71-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4020-78-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4020-76-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4020-62-0x0000000000400000-0x0000000000424000-memory.dmp