Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-09-2024 21:03

General

  • Target

    2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe

  • Size

    3.6MB

  • MD5

    2cf5cddefdb9208bea01442cad44896d

  • SHA1

    1b2f02ed71659f7fa21d8ac3ca9d18ee90b13097

  • SHA256

    9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1

  • SHA512

    e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b

  • SSDEEP

    98304:ze3/NQcGeqxQat113OU/jIEeQfoR/IuOFVjUu5:zGmreqxV13FIF0wu

Malware Config

Extracted

Family

xworm

Attributes
  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/wEzYtSg6

Signatures

  • Detect Xworm Payload 12 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3144
      • C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:5056
      • C:\ProgramData\Synaptics\Synaptics.exe
        "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4768
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:408
          • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
            "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            PID:5016
  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    3.6MB

    MD5

    2cf5cddefdb9208bea01442cad44896d

    SHA1

    1b2f02ed71659f7fa21d8ac3ca9d18ee90b13097

    SHA256

    9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1

    SHA512

    e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b

  • C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe

    Filesize

    56KB

    MD5

    58309af0f1139095eb1eaabcd725063c

    SHA1

    f7d419e58597f9e3babac8e4f0066fd0f1ddf5ed

    SHA256

    6acae1df5780f41a9b3d291aacca815f55a4a82b2a4bbfb275cce13a05bd2311

    SHA512

    057e53ced55171d21f67f4464845290710a5c8072632e05f98683e2d78d3b6a06dd94d190e8a4965b134386e5d9040fb6891eb84ff1c9b09f42fab8ce9512a03

  • C:\Users\Admin\AppData\Local\Temp\DC285E00

    Filesize

    23KB

    MD5

    5367a5b80cd2d00ff07075cd24070039

    SHA1

    50e6d29a728779c79075a0aa8605ca1bf7863d97

    SHA256

    b7ddc528d3047a85fca2217bebb9555ca55389c4316856dc7a60ab9c50df4508

    SHA512

    bbbc71758356ad61a2ddc824c201bef6a560c7dd7a3dec43e44e3ce95857d6bb259c428db92d50044192389246e4af6d565164a28ed86e4fa6701ac2faa27c75

  • C:\Users\Admin\AppData\Local\Temp\PTrPqgD2.xlsm

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • memory/408-332-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/408-268-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/408-266-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/408-265-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/408-151-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/832-216-0x00007FFA860B0000-0x00007FFA860C0000-memory.dmp

    Filesize

    64KB

  • memory/832-212-0x00007FFA860B0000-0x00007FFA860C0000-memory.dmp

    Filesize

    64KB

  • memory/832-218-0x00007FFA83930000-0x00007FFA83940000-memory.dmp

    Filesize

    64KB

  • memory/832-217-0x00007FFA83930000-0x00007FFA83940000-memory.dmp

    Filesize

    64KB

  • memory/832-215-0x00007FFA860B0000-0x00007FFA860C0000-memory.dmp

    Filesize

    64KB

  • memory/832-213-0x00007FFA860B0000-0x00007FFA860C0000-memory.dmp

    Filesize

    64KB

  • memory/832-214-0x00007FFA860B0000-0x00007FFA860C0000-memory.dmp

    Filesize

    64KB

  • memory/3144-12-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/3144-11-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/3144-16-0x0000000001300000-0x0000000001301000-memory.dmp

    Filesize

    4KB

  • memory/3144-15-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/3144-14-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/3144-147-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/3908-9-0x0000000008900000-0x0000000008A12000-memory.dmp

    Filesize

    1.1MB

  • memory/3908-19-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/3908-1-0x0000000000900000-0x0000000000CA8000-memory.dmp

    Filesize

    3.7MB

  • memory/3908-2-0x0000000005D20000-0x00000000062C4000-memory.dmp

    Filesize

    5.6MB

  • memory/3908-8-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/3908-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

    Filesize

    4KB

  • memory/3908-10-0x000000000B110000-0x000000000B1AC000-memory.dmp

    Filesize

    624KB

  • memory/3908-7-0x00000000752CE000-0x00000000752CF000-memory.dmp

    Filesize

    4KB

  • memory/3908-6-0x00000000083B0000-0x00000000083C0000-memory.dmp

    Filesize

    64KB

  • memory/3908-5-0x0000000005750000-0x000000000575A000-memory.dmp

    Filesize

    40KB

  • memory/3908-4-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/3908-3-0x0000000005690000-0x0000000005722000-memory.dmp

    Filesize

    584KB

  • memory/5056-82-0x00007FFAA74D3000-0x00007FFAA74D5000-memory.dmp

    Filesize

    8KB

  • memory/5056-269-0x000000001C220000-0x000000001C340000-memory.dmp

    Filesize

    1.1MB

  • memory/5056-308-0x000000001C160000-0x000000001C182000-memory.dmp

    Filesize

    136KB

  • memory/5056-88-0x00000000001E0000-0x00000000001F4000-memory.dmp

    Filesize

    80KB