Analysis

  • max time kernel
    148s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-02-2025 18:04

General

  • Target

    37f98020a18c5349391aa444259fbe0e33133b612ea1a52612415a484e761064.exe

  • Size

    3.8MB

  • MD5

    1e9f66938dc65ea07276d1eb137ab047

  • SHA1

    c9d9c8d5069af1689668157fc178bfa947469b97

  • SHA256

    37f98020a18c5349391aa444259fbe0e33133b612ea1a52612415a484e761064

  • SHA512

    00a217e5ce5a9ce4748054dbe82d887a67083f369c59341b9c5459402b871e4180f1455c5197408ea76989dc8e809157cc7c36ead3813048f6313ad226537d81

  • SSDEEP

    98304:Zspwe8EJfdMgg3akDFJBXy2vRfcSpwxzYs7kjhn/JU:zEJfOhqI+2ZU0IBkjhnRU

Malware Config

Extracted

Family

cryptbot

C2

http://home.elvnuuu11pn.top/ulvJaKQlXazlgWxqjbuu04

Signatures

  • CryptBot

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Cryptbot family
  • Enumerates VirtualBox registry keys 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Embeds OpenSSL 1 IoCs

    Embeds OpenSSL, may be used to circumvent TLS interception.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\37f98020a18c5349391aa444259fbe0e33133b612ea1a52612415a484e761064.exe
    "C:\Users\Admin\AppData\Local\Temp\37f98020a18c5349391aa444259fbe0e33133b612ea1a52612415a484e761064.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1920
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe"
      2⤵
      • Enumerates VirtualBox registry keys
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:7620
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {1E5D073E-225C-4A37-9E86-FFD562E8EBF0} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:S4U:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:7456
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -enc 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
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:7488
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {0572D3B0-72FB-4923-8C38-5DE912BC0051} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:7840
    • C:\Users\Admin\AppData\Roaming\PermissionSet\Method.exe
      C:\Users\Admin\AppData\Roaming\PermissionSet\Method.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:7872
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInUtil.exe
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:7636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x64.exe

    Filesize

    8.9MB

    MD5

    85ab275356bceff2054ea13155c72784

    SHA1

    993f669feda60c8dcddb7465cf0a7e650c3d9a4d

    SHA256

    940dfe413bd0cd025bf1780d7980385e5eb69391b909c60bfd7f3dda2d563256

    SHA512

    a288df1b95c179c6ae6b0611e1f934354a23a254fb3b374260e594bb02fd29501b34d53f48d94097dc3e110d5882abb833cc9aea7d69e4ebecb4d9fcda6546db

  • \Users\Admin\AppData\Local\Temp\RarSFX0\VC_redist.x86.exe

    Filesize

    626KB

    MD5

    abab3febb6ef9c10eb9ecdbebbbc128c

    SHA1

    cda81cd8994098f779de7e1510049daf667fb844

    SHA256

    7614eb6c0d335ac226aec01e855d50c683d9b18529dfc066e51b3163c5f54f3d

    SHA512

    855993982c0660f85ac53defd959f56d912897b5f67afb673dfbf4c1b984abf81ba198ed22553c2aa94f239bcd40e45f7400a7c8c87e79f316f7496cd231db9c

  • memory/1920-71-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-2620-0x00000000024D0000-0x0000000002526000-memory.dmp

    Filesize

    344KB

  • memory/1920-15-0x000007FEF5CF0000-0x000007FEF66DC000-memory.dmp

    Filesize

    9.9MB

  • memory/1920-19-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-17-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-16-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-56-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-41-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-39-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-37-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-35-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-33-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-31-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-29-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-27-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-25-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-23-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-21-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-79-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-77-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-75-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-73-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-13-0x0000000000010000-0x00000000000B2000-memory.dmp

    Filesize

    648KB

  • memory/1920-12-0x000007FEF5CF3000-0x000007FEF5CF4000-memory.dmp

    Filesize

    4KB

  • memory/1920-61-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-65-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-63-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-67-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-59-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-57-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-53-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-51-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-49-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-47-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-14-0x000000001BC20000-0x000000001BD18000-memory.dmp

    Filesize

    992KB

  • memory/1920-2621-0x000000001B460000-0x000000001B4AC000-memory.dmp

    Filesize

    304KB

  • memory/1920-45-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-43-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-2622-0x000000001B4B0000-0x000000001B504000-memory.dmp

    Filesize

    336KB

  • memory/1920-2627-0x000007FEF5CF3000-0x000007FEF5CF4000-memory.dmp

    Filesize

    4KB

  • memory/1920-2633-0x000007FEF5CF0000-0x000007FEF66DC000-memory.dmp

    Filesize

    9.9MB

  • memory/1920-69-0x000000001BC20000-0x000000001BD13000-memory.dmp

    Filesize

    972KB

  • memory/1920-2630-0x000007FEF5CF0000-0x000007FEF66DC000-memory.dmp

    Filesize

    9.9MB

  • memory/7488-2628-0x000000001A010000-0x000000001A2F2000-memory.dmp

    Filesize

    2.9MB

  • memory/7488-2629-0x0000000001470000-0x0000000001478000-memory.dmp

    Filesize

    32KB

  • memory/7636-5267-0x0000000000400000-0x00000000004A2000-memory.dmp

    Filesize

    648KB

  • memory/7872-2653-0x0000000000FD0000-0x0000000001072000-memory.dmp

    Filesize

    648KB