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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 03:14

General

  • Target

    b3a18b4fa0d0ea832e9807e265669977.ps1

  • Size

    421KB

  • MD5

    b3a18b4fa0d0ea832e9807e265669977

  • SHA1

    72a2cae6bb16f9ec097fcf09e6ca2691e561cc9e

  • SHA256

    ad3b313a244216f2b1351bae0e8c7e62292c4fe657670a6a604619673236508f

  • SHA512

    31c5eb719f524cd90be5a0e86adaba0e247ddbfba5b45dd1abeda2e4c79fe27eaf8193c63fd1c5c57fa331a55ca84e772b1f9bb5013a1447ec8b1d3298052083

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64sL68:q3n

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l1010/

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\b3a18b4fa0d0ea832e9807e265669977.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3588
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:4720
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 1104
          3⤵
          • Program crash
          PID:3020
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4720 -ip 4720
      1⤵
        PID:1616

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cktyt043.ami.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/3588-5-0x0000023771E80000-0x0000023771EA2000-memory.dmp

        Filesize

        136KB

      • memory/3588-10-0x00007FFD292A0000-0x00007FFD29D61000-memory.dmp

        Filesize

        10.8MB

      • memory/3588-11-0x0000023771ED0000-0x0000023771EE0000-memory.dmp

        Filesize

        64KB

      • memory/3588-12-0x0000023771EB0000-0x0000023771EBA000-memory.dmp

        Filesize

        40KB

      • memory/3588-17-0x00007FFD292A0000-0x00007FFD29D61000-memory.dmp

        Filesize

        10.8MB

      • memory/4720-13-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/4720-16-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/4720-18-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/4720-19-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/4720-22-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB