Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2023 14:35

General

  • Target

    c707720b420b128bb25bedfe7b474e1e.ps1

  • Size

    485KB

  • MD5

    c707720b420b128bb25bedfe7b474e1e

  • SHA1

    e61e9a44d9776dc4bb2387ca89adef76cd23888b

  • SHA256

    880f872a96df84217bcca8eb543de65abe9a506cc2df99ee44de801fec9c8b9a

  • SHA512

    0d2438ec572e416a9dde33aa7a9a9bf3d9b67087c3e3d391480414a2cc0279cb289cf6a82186bc96f908391ff15e8ce6d7e4b80d81adb7bdd36c83ab26e605fa

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64sigu:q3pu

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l4040/

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\c707720b420b128bb25bedfe7b474e1e.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:668
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      #cmd
      2⤵
        PID:3516
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 1056
          3⤵
          • Program crash
          PID:4804
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3516 -ip 3516
      1⤵
        PID:5040

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ukvrzzyh.tmo.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/668-0-0x0000024CB6240000-0x0000024CB6262000-memory.dmp

        Filesize

        136KB

      • memory/668-10-0x00007FF86C3B0000-0x00007FF86CE71000-memory.dmp

        Filesize

        10.8MB

      • memory/668-11-0x0000024C9D340000-0x0000024C9D350000-memory.dmp

        Filesize

        64KB

      • memory/668-12-0x0000024C9D340000-0x0000024C9D350000-memory.dmp

        Filesize

        64KB

      • memory/668-13-0x0000024C9D380000-0x0000024C9D392000-memory.dmp

        Filesize

        72KB

      • memory/668-18-0x00007FF86C3B0000-0x00007FF86CE71000-memory.dmp

        Filesize

        10.8MB

      • memory/3516-14-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3516-17-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3516-19-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3516-20-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/3516-23-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB