Analysis

  • max time kernel
    53s
  • max time network
    104s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    07-04-2021 11:34

General

  • Target

    PO 652872-25.exe

  • Size

    151KB

  • MD5

    70b20170f5fa182253a73b240d1a90bb

  • SHA1

    6eb48005adb2e90d9baed892bc924b7cf101ab01

  • SHA256

    0a7450cb96f770d928de20993e068930224a5b7314ca0c500f07a15b7adb19f4

  • SHA512

    34fc1b3b20bb9c7b08fd72d075a51d68e19f45092186a516a6fa12a48e5870b277cb0f20b1d11bb744a268d96ecb4d4f1881565ea4c12b0251d8d52646ce789c

Malware Config

Extracted

Family

azorult

C2

http://lexusbiscuit.com/OiuBn/index.php

Signatures

  • Azorult

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

  • Loads dropped DLL 5 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • 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 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 1 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 652872-25.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 652872-25.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Local\Temp\PO 652872-25.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 652872-25.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:3652

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

5
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

5
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\CE87CE80\mozglue.dll
    MD5

    9e682f1eb98a9d41468fc3e50f907635

    SHA1

    85e0ceca36f657ddf6547aa0744f0855a27527ee

    SHA256

    830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d

    SHA512

    230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed

  • \Users\Admin\AppData\Local\Temp\CE87CE80\msvcp140.dll
    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • \Users\Admin\AppData\Local\Temp\CE87CE80\nss3.dll
    MD5

    556ea09421a0f74d31c4c0a89a70dc23

    SHA1

    f739ba9b548ee64b13eb434a3130406d23f836e3

    SHA256

    f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb

    SHA512

    2481fc80dffa8922569552c3c3ebaef8d0341b80427447a14b291ec39ea62ab9c05a75e85eef5ea7f857488cab1463c18586f9b076e2958c5a314e459045ede2

  • \Users\Admin\AppData\Local\Temp\CE87CE80\vcruntime140.dll
    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • \Users\Admin\AppData\Local\Temp\nsc6587.tmp\8hxzy5td3.dll
    MD5

    f08298384fa9a6bd14e1abd891c7abf8

    SHA1

    ee52e6101ec53e474dba854e3443cbd512825de7

    SHA256

    1e9231aba559b567a2109c12a03a4d04ff3e7d1e4fb91a3aba5aa4c0a4a68344

    SHA512

    60be8c7c0cdb2b306597fd68af8f9c0f4bf390321a0a76b7e5e60d32fb05cde2efbb6b27a2f5928fa3eae6d1863574d66ad76c308019b7ec573f21fc291f3451

  • memory/3652-3-0x000000000041A684-mapping.dmp
  • memory/3652-5-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/4760-4-0x0000000002270000-0x0000000002272000-memory.dmp
    Filesize

    8KB