Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 03:05

General

  • Target

    15c127b849650f0c43f5681f8399a090N.exe

  • Size

    932KB

  • MD5

    15c127b849650f0c43f5681f8399a090

  • SHA1

    efe8542f6e4612a1bddd0f3e29c99f4b70cbc9b3

  • SHA256

    d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca

  • SHA512

    b3df32ed3caad831ae02bb7ed72d34747f1e76ec505d3a49a2dceef0207acbcd08c5aea4241ec777035b1896c80df084b85807a51a9fa1dbb6750bc547000bf0

  • SSDEEP

    24576:nxv7AOUeJ5BWiJ5K1xKtk4mPbUc39ZDhzq39A:xv7cmWOU1Sk46bUUZDQ

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Adobe.exe

  • copy_folder

    Adobe

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Adobe-OTOIRK

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe
    "C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe
      "C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:376
      • C:\ProgramData\Adobe\Adobe.exe
        "C:\ProgramData\Adobe\Adobe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1432
        • C:\ProgramData\Adobe\Adobe.exe
          "C:\ProgramData\Adobe\Adobe.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:4524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Adobe\Adobe.exe

    Filesize

    932KB

    MD5

    15c127b849650f0c43f5681f8399a090

    SHA1

    efe8542f6e4612a1bddd0f3e29c99f4b70cbc9b3

    SHA256

    d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca

    SHA512

    b3df32ed3caad831ae02bb7ed72d34747f1e76ec505d3a49a2dceef0207acbcd08c5aea4241ec777035b1896c80df084b85807a51a9fa1dbb6750bc547000bf0

  • memory/376-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/376-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/376-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/376-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/376-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1432-37-0x0000000074060000-0x0000000074810000-memory.dmp

    Filesize

    7.7MB

  • memory/1432-30-0x0000000074060000-0x0000000074810000-memory.dmp

    Filesize

    7.7MB

  • memory/1432-29-0x000000007406E000-0x000000007406F000-memory.dmp

    Filesize

    4KB

  • memory/4524-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4524-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4536-2-0x00000000057F0000-0x0000000005D94000-memory.dmp

    Filesize

    5.6MB

  • memory/4536-3-0x0000000005180000-0x0000000005212000-memory.dmp

    Filesize

    584KB

  • memory/4536-4-0x0000000005250000-0x000000000525A000-memory.dmp

    Filesize

    40KB

  • memory/4536-1-0x00000000006C0000-0x00000000007AE000-memory.dmp

    Filesize

    952KB

  • memory/4536-0-0x0000000074FAE000-0x0000000074FAF000-memory.dmp

    Filesize

    4KB

  • memory/4536-10-0x0000000008B90000-0x0000000008C2C000-memory.dmp

    Filesize

    624KB

  • memory/4536-5-0x0000000074FA0000-0x0000000075750000-memory.dmp

    Filesize

    7.7MB

  • memory/4536-6-0x00000000057C0000-0x00000000057DA000-memory.dmp

    Filesize

    104KB

  • memory/4536-16-0x0000000074FA0000-0x0000000075750000-memory.dmp

    Filesize

    7.7MB

  • memory/4536-7-0x0000000006480000-0x000000000648E000-memory.dmp

    Filesize

    56KB

  • memory/4536-8-0x0000000006490000-0x00000000064A6000-memory.dmp

    Filesize

    88KB

  • memory/4536-9-0x0000000008A30000-0x0000000008AF0000-memory.dmp

    Filesize

    768KB