Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    04-04-2021 08:24

General

  • Target

    Document.exe

  • Size

    845KB

  • MD5

    26382b4f3cc97798992f8c88c27febdd

  • SHA1

    7e8971f121c2b09dea8760c1f1edc5b9931d24f8

  • SHA256

    896d2dc1eab72419ab524333d3fba88c8ddf92b087f1c9af5d6ea402b0c77d89

  • SHA512

    a15fb1bf882f23359fb86ec59fee5bc1fb2b7b0059550842c2d27489788834b843ca81ff0252d9b6359dbf9cd572bed9b65447a82571b3067b0515143d299b07

Malware Config

Extracted

Family

remcos

C2

Bruno.camdvr.org:2404

Bruno1.camdvr.org:2404

Bruno2.camdvr.org:2404

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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document.exe
    "C:\Users\Admin\AppData\Local\Temp\Document.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Program Files (x86)\internet explorer\ieinstal.exe
      "C:\Program Files (x86)\internet explorer\ieinstal.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:972

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/548-2-0x0000000000230000-0x0000000000231000-memory.dmp
    Filesize

    4KB

  • memory/548-3-0x0000000000280000-0x000000000029A000-memory.dmp
    Filesize

    104KB

  • memory/548-4-0x0000000076451000-0x0000000076453000-memory.dmp
    Filesize

    8KB

  • memory/972-6-0x00000000000D0000-0x00000000000D1000-memory.dmp
    Filesize

    4KB

  • memory/972-7-0x0000000000000000-mapping.dmp
  • memory/972-8-0x0000000000150000-0x0000000000151000-memory.dmp
    Filesize

    4KB

  • memory/972-10-0x00000000001E0000-0x00000000001E1000-memory.dmp
    Filesize

    4KB

  • memory/972-16-0x0000000010590000-0x000000001060C000-memory.dmp
    Filesize

    496KB

  • memory/972-17-0x0000000000400000-0x0000000000479000-memory.dmp
    Filesize

    484KB

  • memory/1556-5-0x000007FEF8800000-0x000007FEF8A7A000-memory.dmp
    Filesize

    2.5MB