Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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 16:30

General

  • Target

    f1a8247a688ebcb34d728f27ff8489dd.ps1

  • Size

    421KB

  • MD5

    f1a8247a688ebcb34d728f27ff8489dd

  • SHA1

    33857481b9c0807642983896744082620efc0de7

  • SHA256

    c74dd60489c92b69bd23792a9a2fc5bd963de6781993a66e9b519d6317c93df2

  • SHA512

    35aee40dab7f1ec7ef5ba79feb70886518f899c8a5c2662e6e896e9c45099acf2593b9a14595bdac2132eb6d4be840b8a72176a138fe8766a555a1db9266ed0c

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64bL68:q3c

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l38/

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f1a8247a688ebcb34d728f27ff8489dd.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2780
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:228
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
          PID:3840
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 1108
            3⤵
            • Program crash
            PID:3584
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "{path}"
          2⤵
            PID:4388
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3840 -ip 3840
          1⤵
            PID:2736

          Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ku0wse2.bqc.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • memory/2780-5-0x000001FB6D7B0000-0x000001FB6D7D2000-memory.dmp

            Filesize

            136KB

          • memory/2780-10-0x00007FFB39C30000-0x00007FFB3A6F1000-memory.dmp

            Filesize

            10.8MB

          • memory/2780-11-0x000001FB6D800000-0x000001FB6D810000-memory.dmp

            Filesize

            64KB

          • memory/2780-12-0x000001FB6D800000-0x000001FB6D810000-memory.dmp

            Filesize

            64KB

          • memory/2780-13-0x000001FB6D1D0000-0x000001FB6D1DA000-memory.dmp

            Filesize

            40KB

          • memory/2780-18-0x00007FFB39C30000-0x00007FFB3A6F1000-memory.dmp

            Filesize

            10.8MB

          • memory/3840-14-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/3840-17-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/3840-19-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/3840-20-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/3840-23-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB