Analysis

  • max time kernel
    10s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 13:05

General

  • Target

    2bc33.exe

  • Size

    354KB

  • MD5

    56405ac1aada433e5134304744981cee

  • SHA1

    d03df32535bd469e4dd5033d0fe8785c4b23ee91

  • SHA256

    2bc33396eeb4553f5c5187d16d426d71bc7156c9bcc7c7fd7bce43b29447e6ab

  • SHA512

    9c7aa5303dd38a0424533f474d271b658e2f7b614f804e0e3fd1489980a2d320e6a92f20c4ea28349763957004c7bd48ba8d088df6955fe68902c76da7ddabdc

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer Payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bc33.exe
    "C:\Users\Admin\AppData\Local\Temp\2bc33.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\2bc33.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3060
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:1328

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1328-117-0x0000000000000000-mapping.dmp

  • memory/2256-114-0x00000000008F0000-0x0000000000A3A000-memory.dmp

    Filesize

    1.3MB

  • memory/2256-115-0x0000000000400000-0x0000000000851000-memory.dmp

    Filesize

    4.3MB

  • memory/3060-116-0x0000000000000000-mapping.dmp