Analysis

  • max time kernel
    153s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 08:56

General

  • Target

    pdtzx.scr

  • 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 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
    "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1992
    • 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"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1380
    • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
      "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr"
      2⤵
        PID:5876
      • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
        "C:\Users\Admin\AppData\Local\Temp\pdtzx.scr"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5256
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr /stext "C:\Users\Admin\AppData\Local\Temp\czqcbdwmpdkdkifwifuthwq"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2560
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr /stext "C:\Users\Admin\AppData\Local\Temp\etwncvgodlchmotaaqgvsjcwgfi"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:2908
        • C:\Users\Admin\AppData\Local\Temp\pdtzx.scr
          C:\Users\Admin\AppData\Local\Temp\pdtzx.scr /stext "C:\Users\Admin\AppData\Local\Temp\onjfvorhruvuxchmjbbwvwxfhlscam"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4816
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1704

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              144B

              MD5

              bf8fc086e4ea4a2adee5d4246ee66358

              SHA1

              12f91a35f249dc228c09d81cbcdfc7357dc31637

              SHA256

              1442202ef3d247cb69ca82e8ae71cbc7474237da47550cc03b7fcc03a4741e06

              SHA512

              73ed69b81d4116a86491a0e14b15c48b47f3f4ae98e338e960a30683afd9f59424776c0c920a48885272405637b26b99011fe52d01c630b9384d72dfe40ac82e

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ntlqlh53.d2a.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

              Filesize

              4KB

              MD5

              10fa8ec140c204486092fb161e567ec7

              SHA1

              4d63e1f8df3afefedb19df73d7ee5f3b1e7b6473

              SHA256

              7176ca3d0196ec46f178107fdb587adaef3f6ea65daa80eccd2371a515880e04

              SHA512

              9db4eeb3f07d8d0579f75f3426c91156809152d8c1a37c9a27bf159888f6dd97f1212ac80f5bbb17e4d86f3087c512ccba2ca50a2db07d071370bd36364e1f76

            • memory/1380-28-0x00000000054A0000-0x00000000054C2000-memory.dmp

              Filesize

              136KB

            • memory/1380-26-0x00000000055A0000-0x0000000005BC8000-memory.dmp

              Filesize

              6.2MB

            • memory/1380-101-0x0000000006A40000-0x0000000006A5E000-memory.dmp

              Filesize

              120KB

            • memory/1380-91-0x0000000071070000-0x00000000710BC000-memory.dmp

              Filesize

              304KB

            • memory/1380-105-0x0000000007800000-0x000000000780A000-memory.dmp

              Filesize

              40KB

            • memory/1380-104-0x0000000006BE0000-0x0000000006BFA000-memory.dmp

              Filesize

              104KB

            • memory/1380-90-0x000000007F140000-0x000000007F150000-memory.dmp

              Filesize

              64KB

            • memory/1380-89-0x0000000006A60000-0x0000000006A92000-memory.dmp

              Filesize

              200KB

            • memory/1380-87-0x0000000002B00000-0x0000000002B10000-memory.dmp

              Filesize

              64KB

            • memory/1380-13-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1380-115-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1380-112-0x0000000007AB0000-0x0000000007AB8000-memory.dmp

              Filesize

              32KB

            • memory/1380-16-0x0000000002B60000-0x0000000002B96000-memory.dmp

              Filesize

              216KB

            • memory/1380-86-0x00000000065B0000-0x00000000065FC000-memory.dmp

              Filesize

              304KB

            • memory/1380-18-0x0000000002B00000-0x0000000002B10000-memory.dmp

              Filesize

              64KB

            • memory/1380-19-0x0000000002B00000-0x0000000002B10000-memory.dmp

              Filesize

              64KB

            • memory/1380-111-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

              Filesize

              104KB

            • memory/1380-102-0x0000000006AB0000-0x0000000006B53000-memory.dmp

              Filesize

              652KB

            • memory/1380-110-0x00000000079D0000-0x00000000079E4000-memory.dmp

              Filesize

              80KB

            • memory/1380-109-0x00000000079C0000-0x00000000079CE000-memory.dmp

              Filesize

              56KB

            • memory/1380-107-0x0000000007990000-0x00000000079A1000-memory.dmp

              Filesize

              68KB

            • memory/1380-59-0x0000000005EB0000-0x0000000006204000-memory.dmp

              Filesize

              3.3MB

            • memory/1380-106-0x0000000007A10000-0x0000000007AA6000-memory.dmp

              Filesize

              600KB

            • memory/1380-34-0x0000000005D40000-0x0000000005DA6000-memory.dmp

              Filesize

              408KB

            • memory/1380-88-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1380-84-0x0000000005200000-0x000000000521E000-memory.dmp

              Filesize

              120KB

            • memory/1380-32-0x0000000005BD0000-0x0000000005C36000-memory.dmp

              Filesize

              408KB

            • memory/1380-103-0x0000000007E50000-0x00000000084CA000-memory.dmp

              Filesize

              6.5MB

            • memory/1992-10-0x0000000007400000-0x000000000749C000-memory.dmp

              Filesize

              624KB

            • memory/1992-2-0x0000000005F40000-0x00000000064E4000-memory.dmp

              Filesize

              5.6MB

            • memory/1992-1-0x0000000000F30000-0x0000000001028000-memory.dmp

              Filesize

              992KB

            • memory/1992-21-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1992-17-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1992-3-0x0000000005A30000-0x0000000005AC2000-memory.dmp

              Filesize

              584KB

            • memory/1992-4-0x0000000005C60000-0x0000000005C70000-memory.dmp

              Filesize

              64KB

            • memory/1992-9-0x00000000072A0000-0x0000000007360000-memory.dmp

              Filesize

              768KB

            • memory/1992-8-0x00000000053E0000-0x00000000053EC000-memory.dmp

              Filesize

              48KB

            • memory/1992-7-0x0000000005D30000-0x0000000005D38000-memory.dmp

              Filesize

              32KB

            • memory/1992-6-0x0000000005D10000-0x0000000005D2C000-memory.dmp

              Filesize

              112KB

            • memory/1992-0-0x0000000074D00000-0x00000000754B0000-memory.dmp

              Filesize

              7.7MB

            • memory/1992-5-0x0000000005BD0000-0x0000000005BDA000-memory.dmp

              Filesize

              40KB

            • memory/2560-51-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2560-48-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2560-74-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2560-40-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2560-45-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2908-63-0x0000000000400000-0x0000000000462000-memory.dmp

              Filesize

              392KB

            • memory/2908-47-0x0000000000400000-0x0000000000462000-memory.dmp

              Filesize

              392KB

            • memory/2908-41-0x0000000000400000-0x0000000000462000-memory.dmp

              Filesize

              392KB

            • memory/2908-56-0x0000000000400000-0x0000000000462000-memory.dmp

              Filesize

              392KB

            • memory/4816-58-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4816-60-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4816-44-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/4816-50-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/5256-25-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-22-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-62-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-82-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/5256-83-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-81-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/5256-33-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-31-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-29-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-30-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-27-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-76-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/5256-24-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-79-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/5256-20-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-14-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-12-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-116-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-119-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/5256-11-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-121-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-122-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-129-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-130-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-137-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-138-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-145-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/5256-146-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB