Overview

overview

10

Static

static

5

8a77c26e75...bN.exe

windows7-x64

7

8a77c26e75...bN.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2024 03:23

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General

  • Target

    8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe

  • Size

    1.3MB

  • MD5

    7d30af44bb560517782027d6fe376c30

  • SHA1

    199e02d5f91ba60c4b60d3a9e48809c2458243f2

  • SHA256

    8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92b

  • SHA512

    8e2ca25b0066f5bc0b3b613593d96a17a405dc6ca4910c305e3ba007f1033aa3b393eb1b0c25acf8c5a799972b05664a792b107d5cfe86f6ec5bdecf4b71fc21

  • SSDEEP

    24576:lAHnh+eWsN3skA4RV1Hom2KXFmIadbBV7SOe50:Uh+ZkldoPK1XadtV+X0

Score
10/10
remcosriadiscoveryratupx

Malware Config

Extracted

Family

remcos

Version

2.4.5 Pro

Botnet

RIA

C2

2ffahbg8eydhr96hx3x2lje2ymygt5iq.duckdns.org:4431

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remhost

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remkqdjqsdguhsqgdfjqguhjfgcujqsdfgujhqsgdufh,sqhjdgdhjqsgdhjqghgsdhsqjgdj545d4564d64d64dqs4dq645q4s-57XAU6

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

    ratremcos
  • Drops startup file 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe
    "C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe
      "C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe"
      2⤵
        PID:3548
      • C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe
        "C:\Users\Admin\AppData\Local\Temp\8a77c26e754f12fe4dbe1c2e6b9c15d402df83f5474600f0c25430b7b1ccd92bN.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4124

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\remhost\logs.dat
      Filesize

      79B

      MD5

      510cdc470b01f2d756f7444410f22734

      SHA1

      a7a906d640132ff9acd06bb4d3b902f3c72ff2a6

      SHA256

      e0dc84a46d87a8034b8d40ef4da4ec5fd6d1ebd111b985dcd7cb9ba75b6160d4

      SHA512

      4b8f6ecc22ca94b1baeefbba734b9f285afda522fe4502814649d59121f372c40ce069d7680f7989a43519bf757b35fb6dd9ac6670f6e114937c06ca64a5ed7c

      Download Submit

    • memory/1644-5-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1644-19-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4124-6-0x0000000000400000-0x0000000000425000-memory.dmp

      Filesize

      148KB

      Download

    • memory/4124-12-0x0000000000400000-0x0000000000425000-memory.dmp

      Filesize

      148KB

      Download

    • memory/4124-13-0x0000000000400000-0x0000000000425000-memory.dmp

      Filesize

      148KB

      Download

    • memory/4124-17-0x0000000000400000-0x0000000000425000-memory.dmp

      Filesize

      148KB

      Download

    • memory/4124-14-0x0000000000400000-0x0000000000425000-memory.dmp

      Filesize

      148KB

      Download