Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    30-06-2024 01:07

General

  • Target

    Quotation-04 - 609967.scr

  • Size

    95KB

  • MD5

    50cf2b84679ea401530b7e30d16f166b

  • SHA1

    1720348ae4b55ce19a252e2161c6eb0684ebea10

  • SHA256

    0738981879dde83f3a14602cfa2842e934a11c5339b460a8dd4c57c778221ddd

  • SHA512

    273a2fe9402a237314dce9937a1ec0c36cdcef8a0e2820dcaf40382061fa7fc85ef9df7bfba0b237b40eb10d4ecc236eb650f528400860dd309666c1a1d519b1

  • SSDEEP

    1536:mOhzJDZr9BzDNATEk9UbTV0+gRLVNI6e:lhzbrjDNATEkebh0BRk6e

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.173.62.181:17120

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-F9ZGZ8

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 30 IoCs
  • Detects executables built or packed with MPress PE compressor 12 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 3 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 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr
    "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Quotation-04 - 609967.scr" /t REG_SZ /F /D "C:\Users\Admin\Documents\Quotation-04 - 609967.scr.pif"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Quotation-04 - 609967.scr" /t REG_SZ /F /D "C:\Users\Admin\Documents\Quotation-04 - 609967.scr.pif"
        3⤵
        • Adds Run key to start application
        PID:1648
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c Copy "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr" "C:\Users\Admin\Documents\Quotation-04 - 609967.scr.pif"
      2⤵
        PID:2780
      • C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr
        "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2612
        • C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr
          "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr" /stext "C:\Users\Admin\AppData\Local\Temp\zlvojd"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2316
        • C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr
          "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr" /stext "C:\Users\Admin\AppData\Local\Temp\jfjzjwpdh"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2384
        • C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr
          "C:\Users\Admin\AppData\Local\Temp\Quotation-04 - 609967.scr" /stext "C:\Users\Admin\AppData\Local\Temp\uhorkoaxurej"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1712

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Collection

    Data from Local System

    1
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat
      Filesize

      144B

      MD5

      fa6f817ac790a5d7395a1615b876ae47

      SHA1

      45c5540af7149a4389e57a1df748c9a5ff44a3b9

      SHA256

      d06041275c3d912b7face7331a5e50509583409fe0adc789148aba2d01800cf2

      SHA512

      696ef453a0fbfc1112bf667399550cded2738f985aee1c36a2ccb06650175457718640e773f02b6a9ccfb77e6e05248313c04ef24d6a40d7cfcfeb6f17a0428a

    • C:\Users\Admin\AppData\Local\Temp\zlvojd
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/1660-1-0x0000000000990000-0x00000000009AE000-memory.dmp
      Filesize

      120KB

    • memory/1660-2-0x0000000073FE0000-0x00000000746CE000-memory.dmp
      Filesize

      6.9MB

    • memory/1660-3-0x0000000005810000-0x0000000005892000-memory.dmp
      Filesize

      520KB

    • memory/1660-0-0x0000000073FEE000-0x0000000073FEF000-memory.dmp
      Filesize

      4KB

    • memory/1660-19-0x0000000073FE0000-0x00000000746CE000-memory.dmp
      Filesize

      6.9MB

    • memory/1712-44-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/1712-45-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/1712-47-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2316-46-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-41-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2316-37-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2384-42-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2384-39-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2384-40-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/2612-34-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2612-25-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-26-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-27-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-28-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-29-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-30-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-31-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-33-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-24-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-35-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-20-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-7-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-10-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-11-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-12-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-13-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-14-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-21-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-17-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-6-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-54-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-55-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-56-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2612-60-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2612-59-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2612-61-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-8-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-69-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-68-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-76-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-77-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-84-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-85-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-92-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/2612-93-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB