Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15/03/2023, 02:00

General

  • Target

    service.exe

  • Size

    283KB

  • MD5

    cc9cbbfa9ccc9cefe75253c65ad22405

  • SHA1

    f126e2c4431a9eacab858316eaf031fb5e7bc9f1

  • SHA256

    4d19771fb289f892626b1b04c120f53d69492ec87df2bfd6809dd6fce8662c3c

  • SHA512

    bbc779e3daf6d9dcf249ba59d99feb34a62fe7f381d74b608fcc8719806eef88a04491983623417c9560f2dfc4858f6e8ec12362cf93e57ca3a78e1984ba2e17

  • SSDEEP

    6144:7gZiAEAO0sByNsAal3gVAWgS7/OhwjKfqZK:7gZXEAO/BUdG3gVdt7KnfqZK

Score
10/10

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://pastebin.com/raw/vNcCt60A

Signatures

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\service.exe
    "C:\Users\Admin\AppData\Local\Temp\service.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1208
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Unrestricted -nologo -command .\service.ps1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1640

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\config.vbs

          Filesize

          147B

          MD5

          e04e55d2e6cc3d920631fdc5d6dcc1ce

          SHA1

          2c4dbcff71f8678623a7c197440ec281804dc5a5

          SHA256

          f641a99ec7e549970c81d724766f2a60ff031a5ec92aa6fc84228c82eeb4b4eb

          SHA512

          9511fe4dc599187f4539b8cda476550c54e86cbfcaca339a5db12e980ec322bf488d7458bf76089aa1d845f164f7ddb8adea017923d9a4930b9e821b7a4ae998

        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\service.ps1

          Filesize

          797B

          MD5

          eb9c76ab230c2b8527d504429d7aca20

          SHA1

          ca4fc2fcb5023fa8398fc5a0c15e7ad23a61e8cb

          SHA256

          f985277690d6c85a064bc5d494d20d0774fb5017eaf7874685378c538bd49dbf

          SHA512

          f791797d8301242f2334767153ae7133193cee75538ce38b9d5fa5b60388428a8808c22eb08dd070f6f7e3ce556cf1f04883285eaa44ddf8aba1bd67886429c2

        • memory/1640-64-0x0000000002620000-0x0000000002660000-memory.dmp

          Filesize

          256KB

        • memory/1640-65-0x0000000002620000-0x0000000002660000-memory.dmp

          Filesize

          256KB