Analysis

  • max time kernel
    169s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    06-02-2022 12:02

General

  • Target

    a054833107078b5825c82c523910d32fa838e8c95d3e9bd66c3123c092be2e8f.exe

  • Size

    131KB

  • MD5

    1a4a9f4727863df927b47392049d9c9f

  • SHA1

    d15e4eae9cce74b481b1c5aacdcccacb7ec07a6f

  • SHA256

    a054833107078b5825c82c523910d32fa838e8c95d3e9bd66c3123c092be2e8f

  • SHA512

    71d0274e2d1cccb6ef0870a2518c09801e5ee65fd8b403266100a0892b51682557f0c87bc08f1f16a239ed54d46a2e4ad08c16c2c0a0e5508e3ed246d014f3f3

Malware Config

Signatures

  • ParallaxRat

    ParallaxRat is a multipurpose RAT written in MASM.

  • ParallaxRat payload 1 IoCs

    Detects payload of Parallax Rat, a small portable Rat usually digitally signed with a Sectigo certificate.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 51 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious behavior: SetClipboardViewer 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a054833107078b5825c82c523910d32fa838e8c95d3e9bd66c3123c092be2e8f.exe
    "C:\Users\Admin\AppData\Local\Temp\a054833107078b5825c82c523910d32fa838e8c95d3e9bd66c3123c092be2e8f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: RenamesItself
    • Suspicious behavior: SetClipboardViewer
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Users\Admin\AppData\Roaming\KMS\Auto KMS Service.exe
      "C:\Users\Admin\AppData\Roaming\KMS\Auto KMS Service.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:3304
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1228
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:3832

Network

MITRE ATT&CK Enterprise v6

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