Analysis

  • max time kernel
    135s
  • 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, 19:37

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 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_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:2156
    • 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:4396
      • 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:224
      • 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:5024
        • 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:1144
          • 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:2308
  • 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:512

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\00285E00

    Filesize

    20KB

    MD5

    ec3382d2faf44380a60f8645f21c40f5

    SHA1

    d9559ea7cba0bea9617dd493cdb3d249a744c791

    SHA256

    9c0cacd88afdb14cf06ec0e59ffb46532d97e94897527cd834deff2c65e84fac

    SHA512

    21e70943d21f85f43e58236b9d0d060e9ec6417a63bc7d70966747fce8fe09141616140beb30e86297c9f440eca0fae0f3700e13f1b7448f5537566a04fe6234

  • C:\Users\Admin\AppData\Local\Temp\CWnEID6X.xlsm

    Filesize

    17KB

    MD5

    e566fc53051035e1e6fd0ed1823de0f9

    SHA1

    00bc96c48b98676ecd67e81a6f1d7754e4156044

    SHA256

    8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

    SHA512

    a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

  • memory/224-155-0x0000000073BA0000-0x0000000074350000-memory.dmp

    Filesize

    7.7MB

  • memory/224-154-0x0000000073BAE000-0x0000000073BAF000-memory.dmp

    Filesize

    4KB

  • memory/224-153-0x0000000006C10000-0x0000000006C60000-memory.dmp

    Filesize

    320KB

  • memory/224-152-0x0000000006D90000-0x0000000006F52000-memory.dmp

    Filesize

    1.8MB

  • memory/224-146-0x0000000073BA0000-0x0000000074350000-memory.dmp

    Filesize

    7.7MB

  • memory/224-90-0x0000000000E80000-0x0000000000EC8000-memory.dmp

    Filesize

    288KB

  • memory/224-89-0x0000000073BAE000-0x0000000073BAF000-memory.dmp

    Filesize

    4KB

  • memory/512-220-0x00007FF7FCEF0000-0x00007FF7FCF00000-memory.dmp

    Filesize

    64KB

  • memory/512-226-0x00007FF7FAA00000-0x00007FF7FAA10000-memory.dmp

    Filesize

    64KB

  • memory/512-225-0x00007FF7FAA00000-0x00007FF7FAA10000-memory.dmp

    Filesize

    64KB

  • memory/512-224-0x00007FF7FCEF0000-0x00007FF7FCF00000-memory.dmp

    Filesize

    64KB

  • memory/512-223-0x00007FF7FCEF0000-0x00007FF7FCF00000-memory.dmp

    Filesize

    64KB

  • memory/512-221-0x00007FF7FCEF0000-0x00007FF7FCF00000-memory.dmp

    Filesize

    64KB

  • memory/512-222-0x00007FF7FCEF0000-0x00007FF7FCF00000-memory.dmp

    Filesize

    64KB

  • memory/1144-158-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1144-299-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1144-275-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1144-274-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/1144-273-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/2156-10-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

    Filesize

    4KB

  • memory/2156-12-0x0000000008990000-0x0000000008AD8000-memory.dmp

    Filesize

    1.3MB

  • memory/2156-1-0x0000000000660000-0x0000000000D40000-memory.dmp

    Filesize

    6.9MB

  • memory/2156-6-0x0000000005780000-0x000000000578A000-memory.dmp

    Filesize

    40KB

  • memory/2156-5-0x0000000074DC0000-0x0000000075570000-memory.dmp

    Filesize

    7.7MB

  • memory/2156-4-0x0000000005840000-0x0000000005B94000-memory.dmp

    Filesize

    3.3MB

  • memory/2156-3-0x00000000057A0000-0x0000000005832000-memory.dmp

    Filesize

    584KB

  • memory/2156-7-0x00000000070D0000-0x0000000007240000-memory.dmp

    Filesize

    1.4MB

  • memory/2156-8-0x0000000007260000-0x000000000727E000-memory.dmp

    Filesize

    120KB

  • memory/2156-9-0x00000000087F0000-0x000000000888C000-memory.dmp

    Filesize

    624KB

  • memory/2156-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

    Filesize

    4KB

  • memory/2156-2-0x0000000005D50000-0x00000000062F4000-memory.dmp

    Filesize

    5.6MB

  • memory/2156-11-0x0000000074DC0000-0x0000000075570000-memory.dmp

    Filesize

    7.7MB

  • memory/2156-21-0x0000000074DC0000-0x0000000075570000-memory.dmp

    Filesize

    7.7MB

  • memory/4396-18-0x0000000002ED0000-0x0000000002ED1000-memory.dmp

    Filesize

    4KB

  • memory/4396-150-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4396-17-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4396-15-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4396-13-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/4396-14-0x0000000000400000-0x0000000000506000-memory.dmp

    Filesize

    1.0MB

  • memory/5024-151-0x0000000005740000-0x0000000005A94000-memory.dmp

    Filesize

    3.3MB