Analysis

  • max time kernel
    115s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2024 08:45

General

  • Target

    87d274d0c00a702a21fc6e2bcc65107f28df1e191e7345f85458080abc97ba3dN.exe

  • Size

    1.5MB

  • MD5

    87e42eb13e43a9818add7b640051d970

  • SHA1

    f3cb286e211931e51d3cc444d96b7658c961467e

  • SHA256

    87d274d0c00a702a21fc6e2bcc65107f28df1e191e7345f85458080abc97ba3d

  • SHA512

    9ce707fa9094092460f87d8f94e738e12149053244a35f226b59d6419620ef6fc4c9fc398c300bcbf3378c22627ba941bbc0100bd2b3df421fffea63ed364b9b

  • SSDEEP

    49152:wwcZZbRMbUunBy7g1S50hHrXUSfB0/sv9f:wwcZZIIcdJX

Malware Config

Extracted

Family

remcos

Botnet

Ember Luck

C2

ogcmaw.duckdns.org:2404

emberluck.duckdns.org:2500

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-SKG82E

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • 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 1 IoCs
  • Executes dropped EXE 9 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\87d274d0c00a702a21fc6e2bcc65107f28df1e191e7345f85458080abc97ba3dN.exe
    "C:\Users\Admin\AppData\Local\Temp\87d274d0c00a702a21fc6e2bcc65107f28df1e191e7345f85458080abc97ba3dN.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Public\Libraries\rlyzsazB.cmd" "
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2584
      • C:\Windows\SysWOW64\esentutl.exe
        C:\\Windows\\System32\\esentutl /y C:\\Windows\\System32\\cmd.exe /d C:\\Users\\Public\\alpha.pif /o
        3⤵
          PID:1528
        • C:\Windows\SysWOW64\esentutl.exe
          C:\\Windows\\System32\\esentutl /y C:\\Windows\\System32\\ping.exe /d C:\\Users\\Public\\xpha.pif /o
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          PID:2676
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows "
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2564
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows \SysWOW64"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2592
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c C:\\Users\\Public\\xpha.pif 127.0.0.1 -n 10
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2640
          • C:\Users\Public\xpha.pif
            C:\\Users\\Public\\xpha.pif 127.0.0.1 -n 10
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2088
        • C:\Windows \SysWOW64\per.exe
          "C:\\Windows \\SysWOW64\\per.exe
          3⤵
          • Executes dropped EXE
          PID:936
        • C:\Windows \SysWOW64\per.exe
          "C:\Windows \SysWOW64\per.exe"
          3⤵
          • Executes dropped EXE
          PID:2212
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c del "C:\Users\Public\xpha.pif"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2968
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c rmdir "C:\Windows \SysWOW64
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2940
        • C:\Users\Public\alpha.pif
          C:\\Users\\Public\\alpha.pif /c rmdir "C:\Windows \"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2988
      • C:\Windows\SysWOW64\esentutl.exe
        C:\\Windows\\System32\\esentutl.exe /y C:\Users\Admin\AppData\Local\Temp\87d274d0c00a702a21fc6e2bcc65107f28df1e191e7345f85458080abc97ba3dN.exe /d C:\\Users\\Public\\Libraries\\Bzaszylr.PIF /o
        2⤵
          PID:2956
        • C:\Windows\SysWOW64\colorcpl.exe
          C:\Windows\System32\colorcpl.exe
          2⤵
          • System Location Discovery: System Language Discovery
          PID:1068

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Public\Libraries\rlyzsazB.cmd

        Filesize

        60KB

        MD5

        b87f096cbc25570329e2bb59fee57580

        SHA1

        d281d1bf37b4fb46f90973afc65eece3908532b2

        SHA256

        d08ccc9b1e3acc205fe754bad8416964e9711815e9ceed5e6af73d8e9035ec9e

        SHA512

        72901adde38f50cf6d74743c0a546c0fea8b1cd4a18449048a0758a7593a176fc33aad1ebfd955775eefc2b30532bcc18e4f2964b3731b668dd87d94405951f7

      • C:\Windows \SysWOW64\per.exe

        Filesize

        94KB

        MD5

        869640d0a3f838694ab4dfea9e2f544d

        SHA1

        bdc42b280446ba53624ff23f314aadb861566832

        SHA256

        0db4d3ffdb96d13cf3b427af8be66d985728c55ae254e4b67d287797e4c0b323

        SHA512

        6e775cfb350415434b18427d5ff79b930ed3b0b3fc3466bc195a796c95661d4696f2d662dd0e020c3a6c3419c2734468b1d7546712ecec868d2bbfd2bc2468a7

      • \Users\Public\alpha.pif

        Filesize

        295KB

        MD5

        ad7b9c14083b52bc532fba5948342b98

        SHA1

        ee8cbf12d87c4d388f09b4f69bed2e91682920b5

        SHA256

        17f746d82695fa9b35493b41859d39d786d32b23a9d2e00f4011dec7a02402ae

        SHA512

        e12aad20c824187b39edb3c7943709290b5ddbf1b4032988db46f2e86da3cf7e7783f78c82e4dc5da232f666b8f9799a260a1f8e2694eb4d0cdaf78da710fde1

      • \Users\Public\xpha.pif

        Filesize

        15KB

        MD5

        6242e3d67787ccbf4e06ad2982853144

        SHA1

        6ac7947207d999a65890ab25fe344955da35028e

        SHA256

        4ca10dba7ff487fdb3f1362a3681d7d929f5aa1262cdfd31b04c30826983fb1d

        SHA512

        7d0d457e1537d624119a8023bcc086575696a5739c0460ef11554afac13af5e5d1edc7629a10e62834aba9f1b3ab1442011b15b4c3930399d91dca34b3b1cbaf

      • memory/1068-98-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-75-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-73-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-101-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-100-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-77-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-78-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-79-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-80-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-81-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-82-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-83-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-84-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-85-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-86-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-88-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-89-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-90-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-91-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-92-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-93-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-94-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-96-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-97-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-72-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-76-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-71-0x0000000002D70000-0x0000000003D70000-memory.dmp

        Filesize

        16.0MB

      • memory/1068-102-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-104-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-105-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-106-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-108-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-109-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-110-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-112-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-113-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-114-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-116-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-117-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-118-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-120-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-121-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-122-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-124-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-125-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-126-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/1068-128-0x000000001D3B0000-0x000000001D432000-memory.dmp

        Filesize

        520KB

      • memory/2708-0-0x0000000000220000-0x0000000000221000-memory.dmp

        Filesize

        4KB

      • memory/2708-1-0x0000000003140000-0x0000000004140000-memory.dmp

        Filesize

        16.0MB

      • memory/2708-2-0x0000000003140000-0x0000000004140000-memory.dmp

        Filesize

        16.0MB

      • memory/2708-5-0x0000000000220000-0x0000000000221000-memory.dmp

        Filesize

        4KB

      • memory/2708-4-0x0000000000400000-0x0000000000592000-memory.dmp

        Filesize

        1.6MB