Analysis

  • max time kernel
    147s
  • max time network
    150s
  • 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 01:58

General

  • Target

    4e1f1d9bf4b4f09c83818b2947972800.ps1

  • Size

    485KB

  • MD5

    4e1f1d9bf4b4f09c83818b2947972800

  • SHA1

    cee9f50edc0d0c47e318a5be68750422e53d6ae2

  • SHA256

    f65e34cc627483978d2d832b23311e8634bf8689459a921e7fc5b2b3750c502b

  • SHA512

    0a772ff38ea7819d2a5544d55d6cc3ffbb3326a0fd3fa4b5db2af2a6880a1e1a8b3b4d812d7d811d4a7ffa141984677a2dd1fdfb1c4105baad233f06cf625e8c

  • SSDEEP

    12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64bigu:q3Uu

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 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\4e1f1d9bf4b4f09c83818b2947972800.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      #cmd
      2⤵
        PID:2276
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 1112
          3⤵
          • Program crash
          PID:3360
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2276 -ip 2276
      1⤵
        PID:4516

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ag02b4eg.bxx.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/2276-17-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2276-19-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2276-20-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2276-14-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2276-23-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2544-9-0x000002CC1D370000-0x000002CC1D392000-memory.dmp

        Filesize

        136KB

      • memory/2544-12-0x000002CC1D070000-0x000002CC1D080000-memory.dmp

        Filesize

        64KB

      • memory/2544-11-0x000002CC1D070000-0x000002CC1D080000-memory.dmp

        Filesize

        64KB

      • memory/2544-10-0x00007FFFBF2C0000-0x00007FFFBFD81000-memory.dmp

        Filesize

        10.8MB

      • memory/2544-18-0x00007FFFBF2C0000-0x00007FFFBFD81000-memory.dmp

        Filesize

        10.8MB

      • memory/2544-13-0x000002CC1D360000-0x000002CC1D372000-memory.dmp

        Filesize

        72KB