Analysis

  • max time kernel
    4264951s
  • max time network
    21s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14-01-2022 16:27

General

  • Target

    Cotizaciónpdf.exe

  • Size

    245KB

  • MD5

    3fe29e21698212a70e03144bb4979632

  • SHA1

    b400de247096542b778aa7ed7584f6829b5bbf4e

  • SHA256

    c42005e0a00c3ecbaff6c1189ca8b6f1298a818878ceaebb623585c399c8ba81

  • SHA512

    a37080b42f317bcaf288acc2ede4fd178bf8227a6f0650b61378e829458fb26808f6fb64250e32bb737f583ddb75264c1fde488e31ceb57d7890005f04ab723d

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Cotizaciónpdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Cotizaciónpdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Users\Admin\AppData\Local\Temp\Cotizaciónpdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Cotizaciónpdf.exe"
      2⤵
        PID:3536

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nsh7ADB.tmp\tjbqk.dll
      MD5

      eed28d9a6df23d102eb1e7db08e9b8a8

      SHA1

      b1ea3474da51812f436c0d65178aaee00c916628

      SHA256

      2107ef7267ead9add2cbd586f121a505dcc92db08f9e61d6e2ccca056d4deed5

      SHA512

      8b133190af32cf0b5c0c5e1b93d84c3ae1a9494ebd0419cd911784804e74232fa15ad4f6d787e897af05e90dd2801772c03dea1282ded7921af25eb0fbe353ab

    • memory/3536-131-0x0000000000000000-mapping.dmp
    • memory/3536-132-0x0000000000400000-0x00000000004A2000-memory.dmp
      Filesize

      648KB