Analysis

  • max time kernel
    121s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2023 15:31

General

  • Target

    d9fa5b18b345033d9b02b1de41ab03c9.ps1

  • Size

    421KB

  • MD5

    d9fa5b18b345033d9b02b1de41ab03c9

  • SHA1

    61087f756cf0392af40bb51b71f9581a40269d1c

  • SHA256

    f0eed88ca8a09b3db7ec725d586945de6e47afeec6cb2f0b0e78a5c4396e8cad

  • SHA512

    a489df8590d7eae0b4393c98974f2c30c5d348923e15a7ac48bea57f4cbc2f3079118195d61f6bd797e91d516f28305f97bfbef078217f154e534ab6ee0fd0e3

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64rL68:q3k

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l29/

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\d9fa5b18b345033d9b02b1de41ab03c9.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:2596
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
          PID:4948
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 1068
            3⤵
            • Program crash
            PID:4972
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 4948 -ip 4948
        1⤵
          PID:4776

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2cz0j3kt.o4i.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/2568-5-0x00000211F0DB0000-0x00000211F0DD2000-memory.dmp

          Filesize

          136KB

        • memory/2568-10-0x00007FFFE9630000-0x00007FFFEA0F1000-memory.dmp

          Filesize

          10.8MB

        • memory/2568-11-0x00000211F0CA0000-0x00000211F0CB0000-memory.dmp

          Filesize

          64KB

        • memory/2568-12-0x00000211F0CA0000-0x00000211F0CB0000-memory.dmp

          Filesize

          64KB

        • memory/2568-13-0x00000211F0C90000-0x00000211F0C9A000-memory.dmp

          Filesize

          40KB

        • memory/2568-19-0x00007FFFE9630000-0x00007FFFEA0F1000-memory.dmp

          Filesize

          10.8MB

        • memory/4948-14-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4948-17-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4948-18-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4948-20-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4948-23-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB