Analysis

  • max time kernel
    167s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 09:14

General

  • Target

    15ca51d32ad7a3d1df83d79ea21659fda6f3c55db96ff275f128cab1a33a571f.exe

  • Size

    624KB

  • MD5

    7e9d458dd41c2fd6673ceecd7e162b64

  • SHA1

    e9160b7961c08ca9912c6e384e1d78c19cfa846f

  • SHA256

    15ca51d32ad7a3d1df83d79ea21659fda6f3c55db96ff275f128cab1a33a571f

  • SHA512

    1fcaf36da79efc9f9df18f6c826f171b45c80cfdce0ccbba223ab6c575321d1681bb48391b3ddffce4e070e151ea71d338042d880adec96521d4202252912d08

  • SSDEEP

    12288:p93rW92itxpUGx1I/mCEUaQ9b0WF+cf6vDbRI4LBvhRybnlf61Y+m:3W92kUGx/s9bSvDbRlJ0bn81Y+m

Score
9/10

Malware Config

Signatures

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

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

  • 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). Likely ransomware behaviour.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 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\15ca51d32ad7a3d1df83d79ea21659fda6f3c55db96ff275f128cab1a33a571f.exe
    "C:\Users\Admin\AppData\Local\Temp\15ca51d32ad7a3d1df83d79ea21659fda6f3c55db96ff275f128cab1a33a571f.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:364
    • C:\Users\Admin\AppData\Local\Temp\n8254\s8254.exe
      "C:\Users\Admin\AppData\Local\Temp\n8254\s8254.exe" 7d5e3ffe2f2301619a5bd94bLMzK6EMPQ+tQ52I9O4HxWPvEIXfwE8HmZduMizZCDNqlfNIMQIqSI6KADk9d7+jp1ZvA65anAIOZHyeIiXasAUNPBpXt6viO2wUNjCU8gWwJNQ5hjru7+elKecZQOeSb19VXkLIJPXe9dCqJXs1BpHh3srW9QaSBLbXGQtE= /v "C:\Users\Admin\AppData\Local\Temp\15ca51d32ad7a3d1df83d79ea21659fda6f3c55db96ff275f128cab1a33a571f.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:4272

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n8254\s8254.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • C:\Users\Admin\AppData\Local\Temp\n8254\s8254.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • memory/4272-132-0x0000000000000000-mapping.dmp

  • memory/4272-135-0x00007FF9BF0D0000-0x00007FF9BFB06000-memory.dmp

    Filesize

    10.2MB

  • memory/4272-136-0x0000000000C2A000-0x0000000000C2F000-memory.dmp

    Filesize

    20KB

  • memory/4272-137-0x0000000000C2A000-0x0000000000C2F000-memory.dmp

    Filesize

    20KB

  • memory/4272-138-0x0000000000C2A000-0x0000000000C2F000-memory.dmp

    Filesize

    20KB