Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    22-07-2024 13:09

General

  • Target

    DHL Shipment Document Waybill NO # 1363232194.exe

  • Size

    2.3MB

  • MD5

    2a65843b474feff5256bd673b4ff88ae

  • SHA1

    0c80fb17f84d478941ab4d51fddcccaf274da31d

  • SHA256

    d07cfaeced4e8bba1c9fdc8006dc80105cf654759c4d74d4d2d2964a0f6e9230

  • SHA512

    7f8a5a684273a031b648129870d493c9a2d63838a8179b8ce32e2c94f956c1a1196ef404d346e6ca42016489fa949b985bc598111dde0249c64c12a668b77292

  • SSDEEP

    49152:E2u/BMdg532rpsjCMqigjns2+a95PlpiH9MzMrcgt4hzNriBldyQJ/MqmG:DrpEZI0BnlJNh

Malware Config

Extracted

Family

remcos

Botnet

Dollar Man

C2

178.23.190.118:52499

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-SJ9MVF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • 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.

  • 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

  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL Shipment Document Waybill NO # 1363232194.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Shipment Document Waybill NO # 1363232194.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2148
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\gqyub"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2832
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\rkmncvrr"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:2912
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\bfrfdnbkeizp"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    f4d47443bc952bfa3f4b7d6c9914ce9b

    SHA1

    0f38c0d8bb18abe96a6282de1cbbd629769250b9

    SHA256

    e335007d3b35a0899bb5ddad84bd2de968f46f790c6615c82ad172399acbc4c8

    SHA512

    c812416b2db10b382fcae1c758b170b279deada88dde0dc13844d82a9356d33e18f207af427e3ab71e1406fef169f5a182f608aaea912fe315781a4372d8e6b0

  • C:\Users\Admin\AppData\Local\Temp\gqyub

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/2148-52-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2148-2-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-5-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-1-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-51-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2148-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-9-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-48-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2148-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-4-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2148-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2832-32-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2832-28-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2832-18-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2832-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2832-24-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2832-42-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2912-25-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2912-29-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2912-33-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2912-21-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2912-47-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3024-36-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3024-37-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3024-31-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3024-34-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB