Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 00:46

General

  • Target

    2024-05-10_1d352d74c3ff8daa989c41e4a9700cbc_cryptolocker.exe

  • Size

    69KB

  • MD5

    1d352d74c3ff8daa989c41e4a9700cbc

  • SHA1

    f83f23e91e9e0b44316ca052d224289f0180d0cd

  • SHA256

    084715888527af9fa1f579c1530bfe3d6dc01d31be46872ce51d150eb8a6213e

  • SHA512

    9565e8e1a623032e214bfb3e5e1481fb094477556d64dee8b925bf8f212ca27e32767d7a7b67cfb55e04c971af0f7675b7e3c58a895ef64b6f14c00c6db35fa4

  • SSDEEP

    1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQApF:78SEOtEvwDpjWYvQd2Pr

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-10_1d352d74c3ff8daa989c41e4a9700cbc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_1d352d74c3ff8daa989c41e4a9700cbc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1328
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:944
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4028,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4196 /prefetch:8
    1⤵
      PID:392

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\asih.exe

      Filesize

      69KB

      MD5

      a730e8629ea55be8de39d48888e6e0d3

      SHA1

      9ca75bc7b55258b5d6b45c2b0030d38f3d564cd7

      SHA256

      c36857dcdd5a6f3e658e9882c1ec160321f8b3c9ffb068d891858e1a4c1612c3

      SHA512

      722ed51cd91a997a79decbdb2b706a7725e4b47a2bbeff25da61729f16cea628d8b1573acd16179f14044bad5fa245bd19faa175a1e6b24e5a3722dc5371e0ce

    • memory/944-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/944-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/944-27-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1328-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1328-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/1328-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/1328-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/1328-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB