Analysis

  • max time kernel
    102s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-02-2023 11:53

General

  • Target

    8fbb2c5c20d0a00d1c4ba43d5209e6e3871b98207b03f1aa7483476c1355a12f.exe

  • Size

    70KB

  • MD5

    dc21484e6789296fd8909c2534955a26

  • SHA1

    d93e201935263c143eb4328479e46075096cb9ea

  • SHA256

    8fbb2c5c20d0a00d1c4ba43d5209e6e3871b98207b03f1aa7483476c1355a12f

  • SHA512

    ceb82b90d543a2e1d5f3ad922b5d211095653fe91371f72f9034d5c99821ed1a1022d737f8b11708982ec021ea913f15e4a37342f5df7517e45994a93faf40df

  • SSDEEP

    768:/rVDC0PDYPR+P+3CYOyyEStf0wmWQgoUqwo8IwGKd3ybg7lyL10XI3Ou4sqwL/U/:/r4NR+tYdHSsWQdJ9EEJ3CwfiViKvt

Malware Config

Signatures

  • Detected Xorist Ransomware 11 IoCs
  • Xorist Ransomware

    Xorist is a ransomware first seen in 2020.

  • Drops file in Drivers directory 7 IoCs
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 11 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Modifies registry class 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8fbb2c5c20d0a00d1c4ba43d5209e6e3871b98207b03f1aa7483476c1355a12f.exe
    "C:\Users\Admin\AppData\Local\Temp\8fbb2c5c20d0a00d1c4ba43d5209e6e3871b98207b03f1aa7483476c1355a12f.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops startup file
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    PID:1048
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\HOW TO DECRYPT FILES.txt
    1⤵
      PID:948

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\HOW TO DECRYPT FILES.txt

      Filesize

      541B

      MD5

      cf59be028d5f7ae4c5475bf318ad9adc

      SHA1

      6d15b3c3038f06b1db408135e8c95c1dc24faacc

      SHA256

      295cbbe85f3ff307698f56cc511d1656ad0bf468aa3a2c65c18bad459124b0f5

      SHA512

      5ffd25f0efb7e0b6f75ad6052efacf12b2ab12a699ad362ef94fa2b6d5393772e3f09843c7c28a050ab03f0b9e8815957087d73ecfc4f498a1049a13892f606d

    • C:\Users\Admin\Desktop\HOW TO DECRYPT FILES.txt

      Filesize

      541B

      MD5

      cf59be028d5f7ae4c5475bf318ad9adc

      SHA1

      6d15b3c3038f06b1db408135e8c95c1dc24faacc

      SHA256

      295cbbe85f3ff307698f56cc511d1656ad0bf468aa3a2c65c18bad459124b0f5

      SHA512

      5ffd25f0efb7e0b6f75ad6052efacf12b2ab12a699ad362ef94fa2b6d5393772e3f09843c7c28a050ab03f0b9e8815957087d73ecfc4f498a1049a13892f606d

    • memory/1048-4795-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-3461-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-3884-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4794-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-2145-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4796-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4797-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4798-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4799-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-4800-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB

    • memory/1048-301-0x0000000000400000-0x000000000042C000-memory.dmp

      Filesize

      176KB