Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10/04/2024, 08:54

General

  • Target

    pdtzx.scr.exe

  • Size

    984KB

  • MD5

    98e7bfbf542d7b12f7b7614991743557

  • SHA1

    9eec15369db22c4bcdf39407042545715466292b

  • SHA256

    2320bdd2ef439c3c079ecf8c1c89ff9e8d2c20ed47f459c29186b00c476fa7d4

  • SHA512

    2411a485a66d6aafbe59a576afadb78c1cffd13f4b09595155fe2a9e5f03d57eb2f102cf924e8ebf6918449661197f270e7143c7ce938bdd4dfdaaf277a6e5f9

  • SSDEEP

    24576:6oOBrBls3VEr6ZgFMH+zfQE75oZUPgVQwDqsQ1xAT/qH3:10BlsDZgFMqS1Axu/qH

Malware Config

Extracted

Family

remcos

Botnet

28PDT

C2

psolver827.ddns.net:1974

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

    28pdt

  • mouse_option

    false

  • mutex

    Rmc-9BVBM5

  • 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 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 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 2 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1208
    • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
        C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\vvromgxjhrpytj"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2812
      • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
        C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxxznqilvzhcepknv"
        3⤵
          PID:2836
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxxznqilvzhcepknv"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:548
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\qrcrojtfrhzhgdyznlvk"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1584
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\mjdbliqsslvn"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1356
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\xdjmmaalgunsfqmn"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:876
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr.exe /stext "C:\Users\Admin\AppData\Local\Temp\hxofmltnucfxpfbryvv"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2296

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\28pdt\logs.dat

            Filesize

            144B

            MD5

            c3a58d980de2d6e467992ba556de1cb9

            SHA1

            caedd477a5635fe8df8659f5d4ce9bb8b8d9dadb

            SHA256

            d4ce1995204f7a8294b8d99833e382bf1d81c29e6537af2a8e028be6afae289c

            SHA512

            f94fa398702e80dc9f77c751f7d1e387cee02f66967c204d097ebcfbe34e55fa00de67ea87cf006efebf204384f3dd1f114a3f4db23fce803bf19d223479499e

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

            Filesize

            2B

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • memory/548-100-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/548-56-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/548-60-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/548-63-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/876-82-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/876-102-0x0000000000400000-0x0000000000462000-memory.dmp

            Filesize

            392KB

          • memory/1208-40-0x0000000002C40000-0x0000000002C80000-memory.dmp

            Filesize

            256KB

          • memory/1208-38-0x0000000074C00000-0x00000000751AB000-memory.dmp

            Filesize

            5.7MB

          • memory/1208-41-0x0000000074C00000-0x00000000751AB000-memory.dmp

            Filesize

            5.7MB

          • memory/1208-36-0x0000000074C00000-0x00000000751AB000-memory.dmp

            Filesize

            5.7MB

          • memory/1208-39-0x0000000002C40000-0x0000000002C80000-memory.dmp

            Filesize

            256KB

          • memory/1208-37-0x0000000002C40000-0x0000000002C80000-memory.dmp

            Filesize

            256KB

          • memory/1264-4-0x00000000002D0000-0x00000000002D8000-memory.dmp

            Filesize

            32KB

          • memory/1264-5-0x00000000002F0000-0x00000000002FC000-memory.dmp

            Filesize

            48KB

          • memory/1264-0-0x0000000000ED0000-0x0000000000FC8000-memory.dmp

            Filesize

            992KB

          • memory/1264-26-0x0000000074B00000-0x00000000751EE000-memory.dmp

            Filesize

            6.9MB

          • memory/1264-1-0x0000000074B00000-0x00000000751EE000-memory.dmp

            Filesize

            6.9MB

          • memory/1264-6-0x0000000005CA0000-0x0000000005D60000-memory.dmp

            Filesize

            768KB

          • memory/1264-2-0x0000000005040000-0x0000000005080000-memory.dmp

            Filesize

            256KB

          • memory/1264-3-0x00000000004A0000-0x00000000004BC000-memory.dmp

            Filesize

            112KB

          • memory/1356-96-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/1584-67-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1584-65-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1584-68-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1584-61-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2296-116-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2296-90-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2296-104-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2812-50-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2812-76-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2812-55-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2812-52-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/2880-42-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-47-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-45-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-44-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-43-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-35-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-34-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-33-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-31-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-30-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-29-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-73-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-74-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-24-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2880-21-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-19-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-17-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-103-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-15-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-13-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-11-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-110-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/2880-9-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-7-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/2880-118-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB