Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 17:34

General

  • Target

    31376a802b3589edbcbfa4b6e58e6d2f.exe

  • Size

    512KB

  • MD5

    31376a802b3589edbcbfa4b6e58e6d2f

  • SHA1

    bae3849820f8bd4787e4af6f7c9a27b9412f2658

  • SHA256

    12111918cd8568aa5b35195adcf8b35d6f495a5a086a9a87c56c62067fd9f232

  • SHA512

    c7e70ac4c1783eae1a0f716db90bba3ae52a5a95df1065321d54f7464aa78d32a38a224178b443d4cfa93b365fb80eadc52990bd30a721bbece462e757db45eb

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4K:0+h9OY70z+warul3E4K

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31376a802b3589edbcbfa4b6e58e6d2f.exe
    "C:\Users\Admin\AppData\Local\Temp\31376a802b3589edbcbfa4b6e58e6d2f.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5108
    • C:\Users\Admin\AppData\Local\Temp\n990\s990.exe
      "C:\Users\Admin\AppData\Local\Temp\n990\s990.exe" ac73924bee8f8937481f5a73TWy23i4LWf4fAKJpT7LV+dLEc3TwlW/gg2MrJwq1ICCEdJ8UXWNZjiEji0cE8PMLK8nZSEkZiCPPn56HLC6LugR6Ax1b5C13yUagLaR9z7Fv7ai2z1LK/DbzYc1anSWTqmQAWbXmB3RC32LzJgYompU/ /v "C:\Users\Admin\AppData\Local\Temp\31376a802b3589edbcbfa4b6e58e6d2f.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1716

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n990\s990.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • memory/1716-13-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-12-0x00007FFEC37D0000-0x00007FFEC4171000-memory.dmp

    Filesize

    9.6MB

  • memory/1716-26-0x0000000001210000-0x0000000001222000-memory.dmp

    Filesize

    72KB

  • memory/1716-30-0x000000001CC40000-0x000000001CCDC000-memory.dmp

    Filesize

    624KB

  • memory/1716-29-0x000000001C770000-0x000000001CC3E000-memory.dmp

    Filesize

    4.8MB

  • memory/1716-31-0x000000001CDA0000-0x000000001CE02000-memory.dmp

    Filesize

    392KB

  • memory/1716-32-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-33-0x0000000001240000-0x0000000001248000-memory.dmp

    Filesize

    32KB

  • memory/1716-35-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-34-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-37-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-36-0x00000000011B0000-0x00000000011C0000-memory.dmp

    Filesize

    64KB

  • memory/1716-38-0x00000000207C0000-0x0000000020CCE000-memory.dmp

    Filesize

    5.1MB

  • memory/1716-39-0x0000000020F10000-0x000000002104C000-memory.dmp

    Filesize

    1.2MB

  • memory/1716-41-0x00007FFEC37D0000-0x00007FFEC4171000-memory.dmp

    Filesize

    9.6MB