Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    08-04-2021 08:10

General

  • Target

    c4cd874423d9026b16b370d5fa812471.exe

  • Size

    637KB

  • MD5

    c4cd874423d9026b16b370d5fa812471

  • SHA1

    b1c514708b9611056cce378a8c7d8f2b12e4e8df

  • SHA256

    0a049a6f200348e229ebaa13728cd0d19de4839c741d4faec3dd64207860153d

  • SHA512

    ba5a92674f30bbcb2c4f4552bebb6f226da9ceb5a67d8692d3615353c85a241d9c501732e83b0825f59c6bf272df5cdb66f67136d89fe7f9898b20c018d3f501

Malware Config

Extracted

Family

remcos

C2

alukoren.duckdns.org:9144

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 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4cd874423d9026b16b370d5fa812471.exe
    "C:\Users\Admin\AppData\Local\Temp\c4cd874423d9026b16b370d5fa812471.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Program Files (x86)\internet explorer\ieinstal.exe
      "C:\Program Files (x86)\internet explorer\ieinstal.exe"
      2⤵
        PID:372

    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/372-65-0x0000000000000000-mapping.dmp
    • memory/372-68-0x00000000000D0000-0x00000000000D1000-memory.dmp
      Filesize

      4KB

    • memory/372-67-0x0000000000090000-0x0000000000091000-memory.dmp
      Filesize

      4KB

    • memory/372-71-0x0000000010590000-0x000000001060C000-memory.dmp
      Filesize

      496KB

    • memory/372-70-0x0000000000230000-0x0000000000231000-memory.dmp
      Filesize

      4KB

    • memory/372-72-0x0000000000400000-0x0000000000479000-memory.dmp
      Filesize

      484KB

    • memory/2036-59-0x0000000075251000-0x0000000075253000-memory.dmp
      Filesize

      8KB

    • memory/2036-60-0x0000000000230000-0x0000000000231000-memory.dmp
      Filesize

      4KB

    • memory/2036-62-0x0000000000290000-0x00000000002AA000-memory.dmp
      Filesize

      104KB