Analysis

  • max time kernel
    44s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2023 14:24

General

  • Target

    Product presentation.exe

  • Size

    1.2MB

  • MD5

    d81ed82ea53f8e56bb98eaaef98f4d80

  • SHA1

    01d76f1b404b125a7b8bf3f3829101124965ad9a

  • SHA256

    f90d2b7322438acc8decf28392f29916b9b87ce99072f867d3e278ce6fc295fb

  • SHA512

    49b6b1306d27cf347673c2e8641ea377a941b0f2689e648130fe28fbc7e519a8744b61a9d2635c800c2074af148ff41d6bc2093aa1b73e98670a7aab135f6a3f

  • SSDEEP

    24576:QpbnahUHVL9XoveLj48xCbGmx31VprkdhVKfhoyNDjgGKySlXYrZSD:QpuKHXLU8kb11/JeyNDjgxySeZSD

Malware Config

Signatures

  • Detect PureCrypter injector 1 IoCs
  • PureCrypter

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Product presentation.exe
    "C:\Users\Admin\AppData\Local\Temp\Product presentation.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1732
    • C:\Users\Admin\AppData\Local\Temp\Product presentation.exe
      "C:\Users\Admin\AppData\Local\Temp\Product presentation.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:820

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/820-68-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-66-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-73-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-71-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-63-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-69-0x000000000042A41E-mapping.dmp
  • memory/820-67-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/820-64-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1732-59-0x000000006FEB0000-0x000000007045B000-memory.dmp
    Filesize

    5.7MB

  • memory/1732-61-0x000000006FEB0000-0x000000007045B000-memory.dmp
    Filesize

    5.7MB

  • memory/1732-60-0x000000006FEB0000-0x000000007045B000-memory.dmp
    Filesize

    5.7MB

  • memory/1732-57-0x0000000000000000-mapping.dmp
  • memory/2024-62-0x0000000004D80000-0x0000000004DD4000-memory.dmp
    Filesize

    336KB

  • memory/2024-55-0x0000000004E50000-0x00000000050C0000-memory.dmp
    Filesize

    2.4MB

  • memory/2024-54-0x0000000000B50000-0x0000000000C8C000-memory.dmp
    Filesize

    1.2MB

  • memory/2024-56-0x00000000766D1000-0x00000000766D3000-memory.dmp
    Filesize

    8KB