Analysis

  • max time kernel
    136s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/10/2024, 00:24

General

  • Target

    2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe

  • Size

    3.8MB

  • MD5

    b38044c85c61344e55c645da14c2c5e9

  • SHA1

    3c7234f791f2da542d318965f6868b909a4b6c3e

  • SHA256

    20592cd3af7ef4fc50bf5df5ad426ff7ee6094239422ae1eec91467927e7170a

  • SHA512

    ae2a94a1b3be245e9226d39b81301dbc17e82815547343ac7c222f1d2e89038efb160a44699eb13abc41a53ef78b484bb31110a402457d22f931286ab5e927ad

  • SSDEEP

    98304:aF0lfx2WMXhJcemnWcOU/jIEeQfoR/IuOFVjUu5:v9x7ZeiLFIF0wu

Malware Config

Extracted

Family

vipkeylogger

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • 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 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 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 6 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 behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4008
    • C:\Users\Admin\AppData\Local\Temp\2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-10-29_b38044c85c61344e55c645da14c2c5e9_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:4840
      • C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4972
      • 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 behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4580
        • 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:3460
          • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
            "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook profiles
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • outlook_office_path
            • outlook_win_path
            PID:4944
  • 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:2652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    3.8MB

    MD5

    b38044c85c61344e55c645da14c2c5e9

    SHA1

    3c7234f791f2da542d318965f6868b909a4b6c3e

    SHA256

    20592cd3af7ef4fc50bf5df5ad426ff7ee6094239422ae1eec91467927e7170a

    SHA512

    ae2a94a1b3be245e9226d39b81301dbc17e82815547343ac7c222f1d2e89038efb160a44699eb13abc41a53ef78b484bb31110a402457d22f931286ab5e927ad

  • C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-29_b38044c85c61344e55c645da14c2c5e9_avoslocker_hijackloader.exe

    Filesize

    269KB

    MD5

    5446eaf87fe423755a4611cd0ff939e4

    SHA1

    c4b2153f43659c6b0ff11527a02b0b0dbfe75b11

    SHA256

    f7f3df09f0759f03d0d3d114caadac597c767ebfeaba7115d2963c732864daff

    SHA512

    1b82fc09028091ca718ee02853c0a4a3096ac92f2ba707e181c78cccb8ca717deedda3d7605a704112660575ab0d30f556e8317bbc15940c96265b0da2b4a73c

  • C:\Users\Admin\AppData\Local\Temp\3C585E00

    Filesize

    22KB

    MD5

    fbc15f051e7336176da4aa9a77f20c31

    SHA1

    8b4de6477369db49b9ebc5b6a495ad91942e2ca0

    SHA256

    0a3319be5506c49c64e4befc0925258e57b691d92a9d8edfac7352b9cc395817

    SHA512

    b94db14176246132b61da5ffb2a7a7097cf98b5ef980af5c51e63af6aa6eda575b6eb89c1776162c9e83d485a8540a1155cf5952daf71e3b6dd7504bb326bb81

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

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • memory/2652-219-0x00007FFDD5430000-0x00007FFDD5440000-memory.dmp

    Filesize

    64KB

  • memory/2652-218-0x00007FFDD5430000-0x00007FFDD5440000-memory.dmp

    Filesize

    64KB

  • memory/2652-221-0x00007FFDD5430000-0x00007FFDD5440000-memory.dmp

    Filesize

    64KB

  • memory/2652-222-0x00007FFDD5430000-0x00007FFDD5440000-memory.dmp

    Filesize

    64KB

  • memory/2652-223-0x00007FFDD2C20000-0x00007FFDD2C30000-memory.dmp

    Filesize

    64KB

  • memory/2652-220-0x00007FFDD5430000-0x00007FFDD5440000-memory.dmp

    Filesize

    64KB

  • memory/2652-224-0x00007FFDD2C20000-0x00007FFDD2C30000-memory.dmp

    Filesize

    64KB

  • memory/3460-272-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/3460-157-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/3460-271-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/3460-297-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/3460-273-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4008-11-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/4008-2-0x00000000060F0000-0x0000000006694000-memory.dmp

    Filesize

    5.6MB

  • memory/4008-21-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/4008-4-0x0000000005C80000-0x0000000005FD4000-memory.dmp

    Filesize

    3.3MB

  • memory/4008-3-0x0000000005BE0000-0x0000000005C72000-memory.dmp

    Filesize

    584KB

  • memory/4008-1-0x0000000000DC0000-0x000000000118A000-memory.dmp

    Filesize

    3.8MB

  • memory/4008-5-0x00000000060D0000-0x00000000060DA000-memory.dmp

    Filesize

    40KB

  • memory/4008-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

    Filesize

    4KB

  • memory/4008-12-0x0000000009100000-0x0000000009248000-memory.dmp

    Filesize

    1.3MB

  • memory/4008-10-0x00000000752CE000-0x00000000752CF000-memory.dmp

    Filesize

    4KB

  • memory/4008-8-0x0000000008EA0000-0x0000000008EBE000-memory.dmp

    Filesize

    120KB

  • memory/4008-9-0x0000000008F60000-0x0000000008FFC000-memory.dmp

    Filesize

    624KB

  • memory/4008-7-0x0000000008D10000-0x0000000008E80000-memory.dmp

    Filesize

    1.4MB

  • memory/4008-6-0x00000000752C0000-0x0000000075A70000-memory.dmp

    Filesize

    7.7MB

  • memory/4580-150-0x0000000005980000-0x0000000005CD4000-memory.dmp

    Filesize

    3.3MB

  • memory/4840-16-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4840-13-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4840-149-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4840-18-0x0000000001980000-0x0000000001981000-memory.dmp

    Filesize

    4KB

  • memory/4840-17-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4840-14-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4972-153-0x0000000073F7E000-0x0000000073F7F000-memory.dmp

    Filesize

    4KB

  • memory/4972-152-0x0000000006760000-0x00000000067B0000-memory.dmp

    Filesize

    320KB

  • memory/4972-151-0x00000000068D0000-0x0000000006A92000-memory.dmp

    Filesize

    1.8MB

  • memory/4972-90-0x0000000073F7E000-0x0000000073F7F000-memory.dmp

    Filesize

    4KB

  • memory/4972-126-0x00000000008C0000-0x0000000000908000-memory.dmp

    Filesize

    288KB