Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 05:47

General

  • Target

    2024-06-09_c3a988105d4081b8f5c23d8d35360b6b_cryptolocker.exe

  • Size

    39KB

  • MD5

    c3a988105d4081b8f5c23d8d35360b6b

  • SHA1

    00b2ff60542bb72a907b742f0d4eb96ebbe80863

  • SHA256

    c4db481b57b420c42d2a5e8d41cc0b7f34e7afb2d7db080f969c84492dbf79da

  • SHA512

    fe95ab5214456f074b160ef9331519871f1789e1ca31a5f7e3ade3702ac7120bbafc85d042605c9b869cf90eb83d37ada68228d09eb45a8e587b6114fa86d2ee

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4qg4:fT+hsMQMOtEvwDpjoIHf4

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • 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\2024-06-09_c3a988105d4081b8f5c23d8d35360b6b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_c3a988105d4081b8f5c23d8d35360b6b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4660
    • 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:1096
  • 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 --mojo-platform-channel-handle=4240 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4248

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      39KB

      MD5

      880341c81fe30b7748fa123fd3bb00a6

      SHA1

      c59d474ddbbce749505e530a4fecc0a3dfb5789f

      SHA256

      41a81565defea45d35c1803d848b4aa65c522a5e7a66b697f25ab28432024a91

      SHA512

      7c7c301466abce30d1f8418dc8175f1585c453bc2032c61ae7abb28abdd61228325d46a3f48b2b4e64de67d1afabdff010debda2d5d19b49b0b3434376c9f766

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1096-17-0x0000000000870000-0x0000000000876000-memory.dmp

      Filesize

      24KB

    • memory/1096-23-0x00000000007C0000-0x00000000007C6000-memory.dmp

      Filesize

      24KB

    • memory/4660-0-0x0000000002190000-0x0000000002196000-memory.dmp

      Filesize

      24KB

    • memory/4660-1-0x0000000002190000-0x0000000002196000-memory.dmp

      Filesize

      24KB

    • memory/4660-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

      Filesize

      24KB