Analysis

  • max time kernel
    154s
  • 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
    22-12-2023 15:59

General

  • Target

    e3f7a436ab2d32d2567204e45bdc2b5a.ps1

  • Size

    421KB

  • MD5

    e3f7a436ab2d32d2567204e45bdc2b5a

  • SHA1

    fbe8802c298e1778e73e51a9e2fcfb514ba8c349

  • SHA256

    34d8a8023bbc527ce506d2045bc74330d505af401f2040c19888d1e7821233d6

  • SHA512

    03f6a57f8f26fe43cc7f4e798f0f54b0348146268850ef12808415381c5b395db1a9817717933820e4649925c1df0e40c9921b4248ae734818762fc9d233980f

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64ML68:q3H

Score
10/10

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l1414/

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\e3f7a436ab2d32d2567204e45bdc2b5a.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3280
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:5076
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1100
          3⤵
          • Program crash
          PID:2272
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
          PID:2340
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 5076 -ip 5076
        1⤵
          PID:3584

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ulwsnkb3.l2u.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/3280-0-0x000001C2ECA50000-0x000001C2ECA72000-memory.dmp

          Filesize

          136KB

        • memory/3280-12-0x000001C2D0B90000-0x000001C2D0BA0000-memory.dmp

          Filesize

          64KB

        • memory/3280-11-0x000001C2D0B90000-0x000001C2D0BA0000-memory.dmp

          Filesize

          64KB

        • memory/3280-10-0x00007FFD5B8F0000-0x00007FFD5C3B1000-memory.dmp

          Filesize

          10.8MB

        • memory/3280-13-0x000001C2ECDC0000-0x000001C2ECDCA000-memory.dmp

          Filesize

          40KB

        • memory/3280-18-0x00007FFD5B8F0000-0x00007FFD5C3B1000-memory.dmp

          Filesize

          10.8MB

        • memory/5076-14-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5076-17-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5076-19-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5076-20-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/5076-23-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB