Analysis

  • max time kernel
    155s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    06-02-2022 08:40

General

  • Target

    cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe

  • Size

    792KB

  • MD5

    a991180b8a678a3e13ec414cbe8e3f07

  • SHA1

    f1678274cb7831db042119b35ff409338ff08715

  • SHA256

    cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9

  • SHA512

    d01396756570abc2e06ac6533062756b36d02b3d2b39e524338a239d719bfa6a9d5f460d096452c514c91741e2fbde2f43e891541448be2739e6aaf0508f6492

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe
    "C:\Users\Admin\AppData\Local\Temp\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Users\Admin\AppData\Local\Temp\3582-490\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe"
      2⤵
      • Executes dropped EXE
      PID:1984

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe
    MD5

    8eea44226d6a5bd5b4f2a0f46c821286

    SHA1

    eb74213e18a1b803c41bd209db243b6dbbcc702f

    SHA256

    c9b596f8ace3bec80ec783a7dd189886155de202bb86a0e4d9de51f5086cc40a

    SHA512

    867ff68278037ada87ed93a4d994a8ff0b11635091c2a080d509103e44a76f49334709a9dbfed65431dd957f400f464606696a222cea4cee818fc853a11c0af0

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\cdb99667b5e02f1388c487926d09a585124c37f850095a900c99725c5f12b7d9.exe
    MD5

    8eea44226d6a5bd5b4f2a0f46c821286

    SHA1

    eb74213e18a1b803c41bd209db243b6dbbcc702f

    SHA256

    c9b596f8ace3bec80ec783a7dd189886155de202bb86a0e4d9de51f5086cc40a

    SHA512

    867ff68278037ada87ed93a4d994a8ff0b11635091c2a080d509103e44a76f49334709a9dbfed65431dd957f400f464606696a222cea4cee818fc853a11c0af0

  • memory/756-55-0x00000000760F1000-0x00000000760F3000-memory.dmp
    Filesize

    8KB