Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 02:35

General

  • Target

    RFQ SY103 first order 2024.scr

  • Size

    966KB

  • MD5

    9beaec299e48eb0072fd6e270d8e8cd3

  • SHA1

    a719b69d48a210af3749bccd27b4ad5185c35d8d

  • SHA256

    554b40336bad24df88cbde544cdf20d553d02ce7fee5dab9a82318d7c21471e0

  • SHA512

    d0742bee412db3abdb8ddee99ceaf45721f6c72c2b9044838d755b6e8a51377831177eb087f709efee31dc36871e2e274338734731e3d89519bebfb1e74c0733

  • SSDEEP

    24576:dtHKWYHu2k6ei445zcNjNGbr3SN2jcjR11O7Akmla:7KWYHu2kf745zCa3SN2jcjRuUkK

Malware Config

Extracted

Family

remcos

Botnet

BUDDY

C2

192.210.201.57:52499

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-LMLI87

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 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
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
    "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
      "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1968
      • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
        "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr" /stext "C:\Users\Admin\AppData\Local\Temp\zyzakscn"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2116
      • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
        "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr" /stext "C:\Users\Admin\AppData\Local\Temp\jaekdlnpubv"
        3⤵
          PID:2452
        • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
          "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr" /stext "C:\Users\Admin\AppData\Local\Temp\jaekdlnpubv"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1760
        • C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr
          "C:\Users\Admin\AppData\Local\Temp\RFQ SY103 first order 2024.scr" /stext "C:\Users\Admin\AppData\Local\Temp\mvsdedyiijnwvgb"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2112

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    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

      1260915b48bd9f2b11e53fb766bb92ed

      SHA1

      47a9b3c88b3d4667597698b1b9755a9dbb4b94e1

      SHA256

      1d1e31bffab891a2b071d448000ee4e2571ffe3b80a6ca4173f5f1570fba5e36

      SHA512

      5930fa175fe8c57d29650e745251d9daa340abbf5e5f93ae8a69b1d5498af7c5636895283c964958f5db6050523abe52a6ef15ee51d59f26ce22882eec0ede27

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

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • memory/1760-48-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1760-69-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1760-57-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1760-54-0x0000000000400000-0x0000000000462000-memory.dmp
      Filesize

      392KB

    • memory/1968-73-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/1968-93-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-6-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-14-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-16-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-12-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-18-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-20-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1968-23-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-25-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-109-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-27-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-28-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-30-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-31-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-32-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-33-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-34-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-35-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-38-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-39-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-40-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-108-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-101-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-100-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-10-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-8-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-92-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-85-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/1968-84-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-83-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-79-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-76-0x0000000000400000-0x0000000000482000-memory.dmp
      Filesize

      520KB

    • memory/1968-75-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/1968-74-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/1968-70-0x0000000010000000-0x0000000010019000-memory.dmp
      Filesize

      100KB

    • memory/2084-5-0x0000000005530000-0x00000000055F0000-memory.dmp
      Filesize

      768KB

    • memory/2084-4-0x00000000002B0000-0x00000000002BC000-memory.dmp
      Filesize

      48KB

    • memory/2084-3-0x0000000000290000-0x00000000002A0000-memory.dmp
      Filesize

      64KB

    • memory/2084-2-0x0000000004EF0000-0x0000000004F30000-memory.dmp
      Filesize

      256KB

    • memory/2084-0-0x00000000002D0000-0x00000000003C6000-memory.dmp
      Filesize

      984KB

    • memory/2084-1-0x0000000074900000-0x0000000074FEE000-memory.dmp
      Filesize

      6.9MB

    • memory/2084-26-0x0000000074900000-0x0000000074FEE000-memory.dmp
      Filesize

      6.9MB

    • memory/2112-61-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2112-58-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2112-60-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2112-59-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2112-53-0x0000000000400000-0x0000000000424000-memory.dmp
      Filesize

      144KB

    • memory/2116-47-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2116-66-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2116-49-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2116-43-0x0000000000400000-0x0000000000478000-memory.dmp
      Filesize

      480KB

    • memory/2116-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB