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Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2024, 21:54

General

  • Target

    Shipping documents PO 16103 INV.exe

  • Size

    2.5MB

  • MD5

    671423091cbffb473016291d68a5b49b

  • SHA1

    07f1a0c895fa372f6043fbf013b78321a6939193

  • SHA256

    31fdf75cd3cf71f770eb158141183b08ed0845b27ecd2e90ce20eb3c4e4642c0

  • SHA512

    23782fee548af5a284ac9d833041604a4e1965df0c7f7bad6f4eaa7c1f13a0712c2d3218b868c06cb7779df57ec2f79fdb1dcc1b9f951cda95fa095e925f486e

  • SSDEEP

    49152:Qg7eO7kjTav5AwVZGKY3uS+s1vm1lOt+2QpTay:F7lQfjQd

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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 8 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipping documents PO 16103 INV.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipping documents PO 16103 INV.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Network Configuration Discovery: Internet Connection Discovery
    • Suspicious use of WriteProcessMemory
    PID:5060
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3912
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\fzoegsxowrcxmahoihkpr"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4348
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\pbtxhkiikzucphvsrsxjclzx"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:3860
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\rvghidskgimhznrwidskfqtoilh"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4500

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    090a0cdc39ad7d708af09f3de76bac81

    SHA1

    58b700cf07d3ea2a1cac3aa4c1d0371a40815c2d

    SHA256

    8da9a32925fcc8db34fa2b93838c16d7a82a95c4530a1219210ac9a03cffdab1

    SHA512

    37ff0006276de1a7cedd1e86f4b9925525c64a801b4d5e63eee32300c270c4b06918b588a408f84fe6d57e0be9269f29dc9507ffb4581c88a0ceb402e1ae8684

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

    Filesize

    4KB

    MD5

    71e3611290752b1a114e303d84e3987f

    SHA1

    210794023f369235615743c802fce5055961ee6e

    SHA256

    5163d0e849d5d39f1e8beb9d13beea8240d532dff6f28433522148628007af06

    SHA512

    d0235dd58f9038009e44c4847535f2bb652f093418fdfd890c01b4b9d8981df3a31e4a89f9099c226becbfe8541015d60f6b852165241d08cb8795d93dd2eb09

  • memory/3860-17-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3860-20-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3860-31-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3860-22-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3912-40-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3912-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-9-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-79-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-7-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-78-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-5-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-1-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-3-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-2-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-37-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3912-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-41-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3912-0-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3912-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4348-35-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4348-21-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4348-30-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4348-19-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4348-15-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4500-23-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4500-28-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4500-29-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4500-32-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4500-33-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB