Analysis

  • max time kernel
    131s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2023 11:01

General

  • Target

    1fbdcbe49c60e18e358bdd41a8aadafce6cd8b6651565623e7535677d531a2c0.exe

  • Size

    8KB

  • MD5

    5ee1f2c2d09bca1f82cc7ca4d74ca959

  • SHA1

    b259d59e09fda59d8e07caa1442c8974f53b4d31

  • SHA256

    1fbdcbe49c60e18e358bdd41a8aadafce6cd8b6651565623e7535677d531a2c0

  • SHA512

    40a7e3e9b04da206c3690897b37a0bcec04dddf8f80a3fa7066b92066d867502928008792c3d8295f059fb4a4d0133c29defd75e9775967bb092248d0c31d908

  • SSDEEP

    96:SmfQqT126MRn9YLKR2RZBzet1Tom9dTkQhD1TIoD2hYKWgeWwezNt:Smf9MRn9YLG2TNQ0XWwKKWgeWF

Malware Config

Extracted

Family

purecrypter

C2

http://80.66.75.36/a-Xjznszbnz.dll

Signatures

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1fbdcbe49c60e18e358bdd41a8aadafce6cd8b6651565623e7535677d531a2c0.exe
    "C:\Users\Admin\AppData\Local\Temp\1fbdcbe49c60e18e358bdd41a8aadafce6cd8b6651565623e7535677d531a2c0.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:928
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1028
      2⤵
      • Program crash
      PID:776

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/928-54-0x00000000001C0000-0x00000000001C8000-memory.dmp
    Filesize

    32KB

  • memory/928-55-0x0000000000530000-0x0000000000570000-memory.dmp
    Filesize

    256KB

  • memory/928-56-0x0000000000530000-0x0000000000570000-memory.dmp
    Filesize

    256KB