Analysis

  • max time kernel
    131s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 14:26

General

  • Target

    2024-05-12_1bed07179ce95b8ea1a03dad8411c5ae_cryptolocker.exe

  • Size

    97KB

  • MD5

    1bed07179ce95b8ea1a03dad8411c5ae

  • SHA1

    d74ee2d9b11277b7a0c1f9f39e723b29202dbc24

  • SHA256

    c5a11fedb90280893c7387375dcf7c56c085a6f0ccb45a29014ca6ab6647fe32

  • SHA512

    48c0bdb2c04f1e3b131f1dcc8cde1fe8c17407a12e37324bd6a862bd8e110d7c976d3ad6b1c24da316a72552d7b6fee94c332c34799f6b718fd8aa29a7208a51

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bq1I:zCsanOtEvwDpjBP

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 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 5 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_1bed07179ce95b8ea1a03dad8411c5ae_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_1bed07179ce95b8ea1a03dad8411c5ae_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3948
    • 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:4672
  • 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=3960,i,6166776566165096562,4582328833313060853,262144 --variations-seed-version --mojo-platform-channel-handle=3804 /prefetch:8
    1⤵
      PID:1568

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      97KB

      MD5

      f13562eb77149261842c9e1845749394

      SHA1

      886e16752fe558c3a70ce3bcdf80e8d14503307d

      SHA256

      68fb2d62742e9e26737853a4cd24637a0ad75f367f500d4b0aebd02821809cab

      SHA512

      b6a8e664f6aea521a48b85af170ad56be00a27da93a2176952c2b006ecf2a472d81c4c62efc6ca3371698c4868906333756d3b912ddea26d4543da1953e9f47e

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3948-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3948-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3948-2-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/3948-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3948-25-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4672-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4672-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4672-19-0x0000000000510000-0x0000000000516000-memory.dmp

      Filesize

      24KB

    • memory/4672-49-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB