Analysis

  • max time kernel
    146s
  • max time network
    91s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    10-07-2020 12:10

General

  • Target

    b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe

  • Size

    242KB

  • MD5

    62231fa0b731bd0aac1c55bd8ed15898

  • SHA1

    d3dd155f601bb80e417b9b0a6cf294215107af46

  • SHA256

    b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3

  • SHA512

    6539e010a88784c5c6c605038b2edb38c06d060543140e08c405025fd4c825f281e78993309a82dabb26148d5ad5eaf5eb0ea87f9fe95a520cd59d9c508c683c

Malware Config

Extracted

Family

azorult

C2

http://195.245.112.115/index.php

Extracted

Family

oski

C2

raymond.ug

Signatures

  • Azorult

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

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
    "C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Users\Admin\AppData\Local\Temp\osaz.exe
      "C:\Users\Admin\AppData\Local\Temp\osaz.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1784
      • C:\Users\Admin\AppData\Local\Temp\osaz.exe
        "{path}"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:1924
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /pid 1924 & erase C:\Users\Admin\AppData\Local\Temp\osaz.exe & RD /S /Q C:\\ProgramData\\461210471157435\\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1464
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /pid 1924
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1640
    • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
      "{path}"
      2⤵
        PID:520

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/520-11-0x0000000000400000-0x0000000000420000-memory.dmp

      Filesize

      128KB

    • memory/520-14-0x0000000000400000-0x0000000000420000-memory.dmp

      Filesize

      128KB

    • memory/1924-23-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1924-19-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB