Analysis

  • max time kernel
    139s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 19:24

General

  • Target

    2024-10-31_8d62e700b688c2cd65741c96363fe1e8_avoslocker_hijackloader.exe

  • Size

    6.9MB

  • MD5

    8d62e700b688c2cd65741c96363fe1e8

  • SHA1

    a2051f1f358c874a603ff25f0fad8f62c08b4595

  • SHA256

    a899e62a8c7ba50eee558ea74ab735499ba057304714ec26d02dcc14adfb3148

  • SHA512

    675a2fbd71ec7203b33fb454cf9b347db8f2adced9de2b4a932013f39f3062674b8d2ec739aa1587f2f457e07085588a776ad9a9880d5d77d3387460ca1e58da

  • SSDEEP

    98304:XF0lfx2WMXhJcemnWqF0lfx2WMXhJcemnW9F0lfx2WMXhJcemnWcOU/jIEeQfoRS:S9x7ZeiI9x7ZeiD9x7ZeiLFIF0wu

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 5 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_8d62e700b688c2cd65741c96363fe1e8_avoslocker_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-31_8d62e700b688c2cd65741c96363fe1e8_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:436
    • C:\Users\Admin\AppData\Local\Temp\2024-10-31_8d62e700b688c2cd65741c96363fe1e8_avoslocker_hijackloader.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-10-31_8d62e700b688c2cd65741c96363fe1e8_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:1896
      • C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-31_8d62e700b688c2cd65741c96363fe1e8_avoslocker_hijackloader.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-31_8d62e700b688c2cd65741c96363fe1e8_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:4848
      • 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:5000
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe"
          4⤵
          • Executes dropped EXE
          PID:716
        • 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:2360
          • 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:2580
  • 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:1288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Synaptics\Synaptics.exe

    Filesize

    6.9MB

    MD5

    8d62e700b688c2cd65741c96363fe1e8

    SHA1

    a2051f1f358c874a603ff25f0fad8f62c08b4595

    SHA256

    a899e62a8c7ba50eee558ea74ab735499ba057304714ec26d02dcc14adfb3148

    SHA512

    675a2fbd71ec7203b33fb454cf9b347db8f2adced9de2b4a932013f39f3062674b8d2ec739aa1587f2f457e07085588a776ad9a9880d5d77d3387460ca1e58da

  • C:\Users\Admin\AppData\Local\Temp\._cache_2024-10-31_8d62e700b688c2cd65741c96363fe1e8_avoslocker_hijackloader.exe

    Filesize

    269KB

    MD5

    5446eaf87fe423755a4611cd0ff939e4

    SHA1

    c4b2153f43659c6b0ff11527a02b0b0dbfe75b11

    SHA256

    f7f3df09f0759f03d0d3d114caadac597c767ebfeaba7115d2963c732864daff

    SHA512

    1b82fc09028091ca718ee02853c0a4a3096ac92f2ba707e181c78cccb8ca717deedda3d7605a704112660575ab0d30f556e8317bbc15940c96265b0da2b4a73c

  • C:\Users\Admin\AppData\Local\Temp\11F75E00

    Filesize

    21KB

    MD5

    71fbe8f31de15571b89095c160e86228

    SHA1

    e42989ffcf4769a574b8c4a36f3bffa6579d3018

    SHA256

    d5546c1adbdf5046a36f4fb3339f017838c889112e56872444c29f505005bcce

    SHA512

    f62ea3c0886bbd61670c696005967e384f14900d35aaf6d628d69621014eeb2517ca01d8a4805d6f270b52d499c316b2cb2b6f55c8fa7400be986fc426b1901b

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

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • memory/436-8-0x0000000009150000-0x000000000916E000-memory.dmp

    Filesize

    120KB

  • memory/436-11-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/436-6-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/436-7-0x0000000008FC0000-0x0000000009130000-memory.dmp

    Filesize

    1.4MB

  • memory/436-19-0x00000000745D0000-0x0000000074D80000-memory.dmp

    Filesize

    7.7MB

  • memory/436-9-0x0000000009210000-0x00000000092AC000-memory.dmp

    Filesize

    624KB

  • memory/436-10-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/436-5-0x0000000005E80000-0x0000000005E8A000-memory.dmp

    Filesize

    40KB

  • memory/436-12-0x00000000093B0000-0x00000000094F8000-memory.dmp

    Filesize

    1.3MB

  • memory/436-4-0x0000000005FA0000-0x00000000062F4000-memory.dmp

    Filesize

    3.3MB

  • memory/436-3-0x0000000005F00000-0x0000000005F92000-memory.dmp

    Filesize

    584KB

  • memory/436-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/436-2-0x00000000064B0000-0x0000000006A54000-memory.dmp

    Filesize

    5.6MB

  • memory/436-1-0x0000000000EA0000-0x0000000001580000-memory.dmp

    Filesize

    6.9MB

  • memory/1288-223-0x00007FFC50FD0000-0x00007FFC50FE0000-memory.dmp

    Filesize

    64KB

  • memory/1288-227-0x00007FFC4EF70000-0x00007FFC4EF80000-memory.dmp

    Filesize

    64KB

  • memory/1288-226-0x00007FFC4EF70000-0x00007FFC4EF80000-memory.dmp

    Filesize

    64KB

  • memory/1288-225-0x00007FFC50FD0000-0x00007FFC50FE0000-memory.dmp

    Filesize

    64KB

  • memory/1288-224-0x00007FFC50FD0000-0x00007FFC50FE0000-memory.dmp

    Filesize

    64KB

  • memory/1288-221-0x00007FFC50FD0000-0x00007FFC50FE0000-memory.dmp

    Filesize

    64KB

  • memory/1288-222-0x00007FFC50FD0000-0x00007FFC50FE0000-memory.dmp

    Filesize

    64KB

  • memory/1896-18-0x0000000001B80000-0x0000000001B81000-memory.dmp

    Filesize

    4KB

  • memory/1896-150-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1896-14-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1896-13-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1896-17-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1896-16-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2360-160-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2360-271-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2360-272-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2360-276-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2360-300-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4848-146-0x0000000073150000-0x0000000073900000-memory.dmp

    Filesize

    7.7MB

  • memory/4848-152-0x0000000006810000-0x00000000069D2000-memory.dmp

    Filesize

    1.8MB

  • memory/4848-90-0x000000007315E000-0x000000007315F000-memory.dmp

    Filesize

    4KB

  • memory/4848-154-0x000000007315E000-0x000000007315F000-memory.dmp

    Filesize

    4KB

  • memory/4848-155-0x0000000073150000-0x0000000073900000-memory.dmp

    Filesize

    7.7MB

  • memory/4848-91-0x0000000000900000-0x0000000000948000-memory.dmp

    Filesize

    288KB

  • memory/4848-153-0x0000000006690000-0x00000000066E0000-memory.dmp

    Filesize

    320KB

  • memory/5000-151-0x0000000005FA0000-0x00000000062F4000-memory.dmp

    Filesize

    3.3MB