Analysis

  • max time kernel
    143s
  • max time network
    151s
  • 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 01:07

General

  • Target

    40b725beab269432755b7015c056a354.ps1

  • Size

    656KB

  • MD5

    40b725beab269432755b7015c056a354

  • SHA1

    c1f36b7c607104af0772addd07e5897b58881faa

  • SHA256

    9e8c7b590d35ec86de9d2f1832c2c5291858d6ed8f07ea195074d2dc6cc523bd

  • SHA512

    b4d50994a84b82ceac45ab7b351b02b1b9376a67e81257684edb16c4353adbf9c2f68bfc74999c2206e997ae99273b0351b1570d88ec484c503fd48ad192bfb1

  • SSDEEP

    12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64U8TVkc5A+:g3ITmr+

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l37/

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\40b725beab269432755b7015c056a354.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      #cmd
      2⤵
        PID:2140
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1120
          3⤵
          • Program crash
          PID:1360
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        #cmd
        2⤵
          PID:2444
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2140 -ip 2140
        1⤵
          PID:3480

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfyxs5h3.ri0.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/2140-64-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2140-59-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2140-61-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2140-58-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2140-55-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/2956-54-0x00000233A1940000-0x00000233A1941000-memory.dmp

          Filesize

          4KB

        • memory/2956-45-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-21-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-23-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-25-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-29-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-27-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-43-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-49-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-53-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-15-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-51-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-47-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-14-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-41-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-39-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-37-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-35-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-33-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-31-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-19-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-17-0x00000233B9E80000-0x00000233B9EA0000-memory.dmp

          Filesize

          128KB

        • memory/2956-13-0x00000233B9E80000-0x00000233B9EA6000-memory.dmp

          Filesize

          152KB

        • memory/2956-12-0x00000233B9EA0000-0x00000233B9EB0000-memory.dmp

          Filesize

          64KB

        • memory/2956-60-0x00007FFB516C0000-0x00007FFB52181000-memory.dmp

          Filesize

          10.8MB

        • memory/2956-10-0x00007FFB516C0000-0x00007FFB52181000-memory.dmp

          Filesize

          10.8MB

        • memory/2956-11-0x00000233B9EA0000-0x00000233B9EB0000-memory.dmp

          Filesize

          64KB

        • memory/2956-0-0x00000233BC020000-0x00000233BC042000-memory.dmp

          Filesize

          136KB