Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 19:27

General

  • Target

    2024-06-16_c80c2ec738e2154ff58d1e9ada47cd0f_cryptolocker.exe

  • Size

    94KB

  • MD5

    c80c2ec738e2154ff58d1e9ada47cd0f

  • SHA1

    cd945ce91c030c65190cf97966d8a969ec79196b

  • SHA256

    78c20791e3b38cf6a254787d3d8b4ef89f8e68cfd53d70c33f138c571c249c1c

  • SHA512

    5de89e242d62cc90bf8fcef3aaacf28461b8c17d39324e5c40360244e2ec1a0f0c37a7ab7fdefe88cb3d991e40890c7aff1482903f4037ef56bf97998dc41ae2

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kH:zCsanOtEvwDpjBM

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 2 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).

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-16_c80c2ec738e2154ff58d1e9ada47cd0f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-16_c80c2ec738e2154ff58d1e9ada47cd0f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2272
  • 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 --field-trial-handle=3956,i,8998666007764333392,14724298544432336038,262144 --variations-seed-version --mojo-platform-channel-handle=4012 /prefetch:8
    1⤵
      PID:4412

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            94KB

            MD5

            5550bef23cf47c83fb5b5f0cf394a453

            SHA1

            df0d578ce95641b34b8459863be584ab7cbb1fa1

            SHA256

            f8bd440cc0c60fad0e47cc7df8c73b7b1a0fcc55f28ef69a7eddf18c9c375dda

            SHA512

            12ea4e5e68ccb74ab963274631ea0d53310cf4f5619be417db4f0421c8360c7ac4732fb0a04982f0dee69d2add73dd592f543a5fda1da7f0cfe76e6c6b512e90

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/1444-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

            Filesize

            24KB

          • memory/1444-0-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/1444-2-0x0000000002090000-0x0000000002096000-memory.dmp

            Filesize

            24KB

          • memory/1444-9-0x00000000006C0000-0x00000000006C6000-memory.dmp

            Filesize

            24KB

          • memory/1444-17-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/2272-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

            Filesize

            24KB

          • memory/2272-25-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

            Filesize

            24KB

          • memory/2272-48-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB