Analysis

  • max time kernel
    139s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:41

General

  • Target

    ScanDocumentsfiles00204865030303388493335950.exe

  • Size

    36.0MB

  • MD5

    6af00ae353deeb4cce9bb865b37fae16

  • SHA1

    e1daca49fec4b46ab45f69d9d8196209935262af

  • SHA256

    5180dca560ce8ad4b5001b77e3da2897890c00bab9193d0bdbd294e6b5fc8b80

  • SHA512

    dc6fb6e1e872d15af76b960f4933726144ef37551f07a58d671ac527789a049f83e8094002b0240f7a79d4e06bc1b6b46aa7a9a129d60e3c20abc3425ea9cd42

  • SSDEEP

    24576:bo0fsegIq86wlMrqBOOMBebMMMMMMMMMMMMMMMMMBLM:bYIvBONGMMMMMMMMMMMMMMMMMS

Malware Config

Extracted

Family

remcos

Botnet

BACK-UP-DOMAIN

C2

www.arkern-tr.com:2404

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

    Rec

  • mouse_option

    false

  • mutex

    Rmc-W3LVOT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • ModiLoader Second Stage 62 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScanDocumentsfiles00204865030303388493335950.exe
    "C:\Users\Admin\AppData\Local\Temp\ScanDocumentsfiles00204865030303388493335950.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\OzkkcrohO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
        3⤵
          PID:2584
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
          3⤵
          • Enumerates system info in registry
          PID:4056
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:4672
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:4524
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:444
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:2188
            • C:\Windows \System32\easinvoker.exe
              "C:\Windows \System32\easinvoker.exe"
              3⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:2900
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:1372
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                  5⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4180
            • C:\Windows\SysWOW64\PING.EXE
              ping 127.0.0.1 -n 6
              3⤵
              • Runs ping.exe
              PID:4128
          • C:\Windows\SysWOW64\wscript.exe
            C:\Windows\System32\wscript.exe
            2⤵
            • Blocklisted process makes network request
            PID:1804

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Public\Libraries\KDECO.bat

          Filesize

          155B

          MD5

          213c60adf1c9ef88dc3c9b2d579959d2

          SHA1

          e4d2ad7b22b1a8b5b1f7a702b303c7364b0ee021

          SHA256

          37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e

          SHA512

          fe897d9caa306b0e761b2fd61bb5dc32a53bfaad1ce767c6860af4e3ad59c8f3257228a6e1072dab0f990cb51c59c648084ba419ac6bc5c0a99bdffa569217b7

        • C:\Users\Public\Libraries\OzkkcrohO.bat

          Filesize

          411B

          MD5

          55aba243e88f6a6813c117ffe1fa5979

          SHA1

          210b9b028a4b798c837a182321dbf2e50d112816

          SHA256

          5a11c5641c476891aa30e7ecfa57c2639f6827d8640061f73e9afec0adbbd7d2

          SHA512

          68009c4c9bbea75a3bfa9f79945d30957a95691ea405d031b4ca7f1cb47504bbc768fcae59173885743ad4d6cfdd2313c3fe0acb515e34e5c809ecdc7f45e307

        • C:\Users\Public\Libraries\easinvoker.exe

          Filesize

          128KB

          MD5

          231ce1e1d7d98b44371ffff407d68b59

          SHA1

          25510d0f6353dbf0c9f72fc880de7585e34b28ff

          SHA256

          30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

          SHA512

          520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

        • C:\Users\Public\Libraries\netutils.dll

          Filesize

          108KB

          MD5

          0511e36a6408d2197034ca03c7db9b02

          SHA1

          54cbb647c50076239eedd94aff3c8240eb0c4125

          SHA256

          35e4a45c3a3f42ef5d340e891e864bafc49e7e869c626bad456290c9cc888303

          SHA512

          613ba2bef07bd751aad3e21c18b6c02635fea2b02523908b61fc60aa48d8759bb9b138582e8e617555c49d9bead9fa4dfa6263f5f88f8249c89c82f136665e78

        • C:\Windows \System32\easinvoker.exe

          Filesize

          128KB

          MD5

          231ce1e1d7d98b44371ffff407d68b59

          SHA1

          25510d0f6353dbf0c9f72fc880de7585e34b28ff

          SHA256

          30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

          SHA512

          520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

        • C:\Windows \System32\easinvoker.exe

          Filesize

          128KB

          MD5

          231ce1e1d7d98b44371ffff407d68b59

          SHA1

          25510d0f6353dbf0c9f72fc880de7585e34b28ff

          SHA256

          30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

          SHA512

          520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

        • C:\Windows \System32\netutils.dll

          Filesize

          108KB

          MD5

          0511e36a6408d2197034ca03c7db9b02

          SHA1

          54cbb647c50076239eedd94aff3c8240eb0c4125

          SHA256

          35e4a45c3a3f42ef5d340e891e864bafc49e7e869c626bad456290c9cc888303

          SHA512

          613ba2bef07bd751aad3e21c18b6c02635fea2b02523908b61fc60aa48d8759bb9b138582e8e617555c49d9bead9fa4dfa6263f5f88f8249c89c82f136665e78

        • C:\Windows \System32\netutils.dll

          Filesize

          108KB

          MD5

          0511e36a6408d2197034ca03c7db9b02

          SHA1

          54cbb647c50076239eedd94aff3c8240eb0c4125

          SHA256

          35e4a45c3a3f42ef5d340e891e864bafc49e7e869c626bad456290c9cc888303

          SHA512

          613ba2bef07bd751aad3e21c18b6c02635fea2b02523908b61fc60aa48d8759bb9b138582e8e617555c49d9bead9fa4dfa6263f5f88f8249c89c82f136665e78

        • C:\windows \system32\KDECO.bat

          Filesize

          155B

          MD5

          213c60adf1c9ef88dc3c9b2d579959d2

          SHA1

          e4d2ad7b22b1a8b5b1f7a702b303c7364b0ee021

          SHA256

          37c59c8398279916cfce45f8c5e3431058248f5e3bef4d9f5c0f44a7d564f82e

          SHA512

          fe897d9caa306b0e761b2fd61bb5dc32a53bfaad1ce767c6860af4e3ad59c8f3257228a6e1072dab0f990cb51c59c648084ba419ac6bc5c0a99bdffa569217b7

        • memory/444-257-0x0000000000000000-mapping.dmp

        • memory/736-178-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-135-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-145-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-146-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-147-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-148-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-149-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-150-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-151-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-152-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-153-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-181-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-155-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-156-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-157-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-158-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-160-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-159-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-161-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-162-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-163-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-164-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-165-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-166-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-167-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-168-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-169-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-170-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-171-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-173-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-174-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-175-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-176-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-184-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-132-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-179-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-183-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-182-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-154-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-143-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-177-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-185-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-186-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-187-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-188-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-189-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-191-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-190-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-192-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-194-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-193-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-195-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-134-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-144-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-180-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-136-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-142-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-137-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-138-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-141-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-140-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/736-139-0x0000000000720000-0x000000000074B000-memory.dmp

          Filesize

          172KB

        • memory/1372-265-0x0000000000000000-mapping.dmp

        • memory/1804-402-0x0000000000400000-0x000000000047B000-memory.dmp

          Filesize

          492KB

        • memory/1804-401-0x0000000010590000-0x000000001060E000-memory.dmp

          Filesize

          504KB

        • memory/1804-277-0x0000000000000000-mapping.dmp

        • memory/1804-403-0x0000000000400000-0x000000000047B000-memory.dmp

          Filesize

          492KB

        • memory/2188-258-0x0000000000000000-mapping.dmp

        • memory/2584-251-0x0000000000000000-mapping.dmp

        • memory/2900-260-0x0000000000000000-mapping.dmp

        • memory/4056-252-0x0000000000000000-mapping.dmp

        • memory/4128-266-0x0000000000000000-mapping.dmp

        • memory/4180-269-0x0000025AAE3A0000-0x0000025AAE3C2000-memory.dmp

          Filesize

          136KB

        • memory/4180-270-0x00007FFC17980000-0x00007FFC18441000-memory.dmp

          Filesize

          10.8MB

        • memory/4180-271-0x00007FFC17980000-0x00007FFC18441000-memory.dmp

          Filesize

          10.8MB

        • memory/4180-268-0x0000000000000000-mapping.dmp

        • memory/4524-255-0x0000000000000000-mapping.dmp

        • memory/4600-249-0x0000000000000000-mapping.dmp

        • memory/4672-254-0x0000000000000000-mapping.dmp