Analysis

  • max time kernel
    121s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    21-02-2022 11:20

General

  • Target

    INVOICES_BL_AWB_2021.exe

  • Size

    354KB

  • MD5

    8ccf9291528b147f1ada20fe94dc822a

  • SHA1

    3c379dfb7f6f26a067077cba102ee8d0ca992425

  • SHA256

    4679648337426622a1f44b99207a036144b1e12391c36733eea10f63a02d0304

  • SHA512

    549b7ea411857bea6e14a5d840ea030c5610d29306f675de16d6ae033116685f28271140485d0b2e06f7b08f8a5cd9caad2209691b64b26ab4313186bcb0b8b5

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer Payload 3 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 6 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
    "C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
      "C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\cmd.exe
        /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\INVOICES_BL_AWB_2021.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2240
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 3
          4⤵
          • Delays execution with timeout.exe
          PID:2720
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4692

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1364-133-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1364-134-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/4692-135-0x0000020516960000-0x0000020516970000-memory.dmp

    Filesize

    64KB

  • memory/4692-136-0x0000020516F20000-0x0000020516F30000-memory.dmp

    Filesize

    64KB

  • memory/4692-137-0x00000205195C0000-0x00000205195C4000-memory.dmp

    Filesize

    16KB

  • memory/4888-130-0x0000000003013000-0x0000000003036000-memory.dmp

    Filesize

    140KB

  • memory/4888-131-0x0000000003013000-0x0000000003036000-memory.dmp

    Filesize

    140KB

  • memory/4888-132-0x00000000001C0000-0x00000000001F9000-memory.dmp

    Filesize

    228KB