Analysis

  • max time kernel
    93s
  • max time network
    100s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 19:50

General

  • Target

    gunzipped.exe

  • Size

    585KB

  • MD5

    aa13abcbaf1697b198400cef3838565d

  • SHA1

    ba6f2484092471309cdff846434986f0eb26cfa6

  • SHA256

    980fb51b13fc0116ca06b8e5d8116569942b53eb4ae54c33b62e731f149cb136

  • SHA512

    4f957f397c62cbc515ebb8ca9953d60ecceb800616922a3302cf1ca78b168a58dc6031b65110afd614d17650f2e99e320ee249163e22dadde150878b571f2769

Malware Config

Extracted

Family

azorult

C2

https://sofcoholidays.com/wp-includes/js/crop/az/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
    "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1036
    • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
      "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
      2⤵
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:2028

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1124-3-0x000007FEF7880000-0x000007FEF7AFA000-memory.dmp
    Filesize

    2.5MB

  • memory/2028-0-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/2028-1-0x000000000041A1F8-mapping.dmp
  • memory/2028-2-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB