Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    12-04-2021 17:38

General

  • Target

    Dringende Bestellung Zitat CTX88467638,pdf.exe

  • Size

    769KB

  • MD5

    66525016cb1f9420e5e5c178082346cf

  • SHA1

    afe3c32389f0009959d9de94feb11e2bf1f1abd7

  • SHA256

    0f3cac160b09665561487322c11c5ee1ad0eb221b32edfecf1fe01d5b5f278f7

  • SHA512

    26eefff0cdc04747ccfb432c0154ec271b2b9ad6ead105fe0f9cd07ba08df05f13d15771eafaeec9912acf02b289ecde134d56c5c398198c9c256b6580058d7c

Malware Config

Extracted

Family

remcos

C2

ongod4life.ddns.net:4344

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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Dringende Bestellung Zitat CTX88467638,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Dringende Bestellung Zitat CTX88467638,pdf.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Program Files (x86)\internet explorer\ieinstal.exe
      "C:\Program Files (x86)\internet explorer\ieinstal.exe"
      2⤵
        PID:4064

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2208-114-0x00000000005B0000-0x00000000006FA000-memory.dmp
      Filesize

      1.3MB

    • memory/2208-116-0x00000000028C0000-0x00000000028DA000-memory.dmp
      Filesize

      104KB

    • memory/4064-119-0x0000000000000000-mapping.dmp
    • memory/4064-121-0x0000000003050000-0x0000000003051000-memory.dmp
      Filesize

      4KB

    • memory/4064-120-0x0000000002D90000-0x0000000002D91000-memory.dmp
      Filesize

      4KB

    • memory/4064-124-0x0000000010540000-0x0000000010564000-memory.dmp
      Filesize

      144KB

    • memory/4064-125-0x0000000000400000-0x0000000000422000-memory.dmp
      Filesize

      136KB

    • memory/4064-123-0x0000000003010000-0x0000000003011000-memory.dmp
      Filesize

      4KB