Analysis

  • max time kernel
    139s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-12-2023 21:48

General

  • Target

    0533575076d7185ba435f3d260e8b3e4.ps1

  • Size

    485KB

  • MD5

    0533575076d7185ba435f3d260e8b3e4

  • SHA1

    ab887dd690c6f1880cc1c01f44296c747b36e4b0

  • SHA256

    3773c12491a4d8462144e592bd3a9746186ca41928b2443959c548cbccb45b37

  • SHA512

    8e472035f8d3c7740a34db8bfffac28494c87221e3d398b93cbccb6113b01c51fd964571906ee044d61a31df167727f3238b596da9f8dcd2b032bbae4a4cdfa8

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64kigu:q3Ru

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l1212/

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\0533575076d7185ba435f3d260e8b3e4.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      #cmd
      2⤵
        PID:4164
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        #cmd
        2⤵
          PID:5096
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1120
            3⤵
            • Program crash
            PID:1944
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5096 -ip 5096
        1⤵
          PID:3664

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_znkmvekz.t1o.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/4804-9-0x000001FB77650000-0x000001FB77672000-memory.dmp

          Filesize

          136KB

        • memory/4804-10-0x000001FB776C0000-0x000001FB776D2000-memory.dmp

          Filesize

          72KB

        • memory/4804-11-0x00007FFECDBF0000-0x00007FFECE6B1000-memory.dmp

          Filesize

          10.8MB

        • memory/4804-12-0x000001FB77710000-0x000001FB77720000-memory.dmp

          Filesize

          64KB

        • memory/4804-13-0x000001FB77710000-0x000001FB77720000-memory.dmp

          Filesize

          64KB

        • memory/4804-17-0x00007FFECDBF0000-0x00007FFECE6B1000-memory.dmp

          Filesize

          10.8MB

        • memory/5096-14-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5096-18-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5096-19-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5096-20-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5096-23-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB