Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 04:31

General

  • Target

    2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe

  • Size

    50KB

  • MD5

    a1558df861221a5e24b0a741a809571e

  • SHA1

    d89481aa24d0119194db04323668ee888f67d7c6

  • SHA256

    76fe15e8302daf36dffca8a3c674f5d198851c415146a770ac6aabe23f7a3903

  • SHA512

    151a21e213be12f1971d2a11637da79b1608cfe7087778744780175522c15d76d957b00c6d897fe4ff07c3f3e11fd175f74572a66f23f3c66d68df73ae895fef

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0n0:vj+jsMQMOtEvwDpj5HczerLO04BH

Score
7/10

Malware Config

Signatures

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-19_a1558df861221a5e24b0a741a809571e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3160
  • 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=4324,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4336 /prefetch:8
    1⤵
      PID:4480

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      51KB

      MD5

      b4b49f3171caf245300091c87928c224

      SHA1

      c2dda4b8da25b3517faa6539e13b1f05c3788acb

      SHA256

      af399bec1fb6d8120e7ad8680796d62719c4ebbc543d7c5177e4b2dbae8fb10c

      SHA512

      cf900525d770115e9f1479291579e1985f4da512e71f9db7fcfebbb505e01a7e210f43bb2db5231b1446c02a3f83d598d56868c396abb80169ee06708bea437c

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2704-0-0x0000000002300000-0x0000000002306000-memory.dmp

      Filesize

      24KB

    • memory/2704-1-0x0000000002300000-0x0000000002306000-memory.dmp

      Filesize

      24KB

    • memory/2704-2-0x0000000002220000-0x0000000002226000-memory.dmp

      Filesize

      24KB

    • memory/3160-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/3160-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

      Filesize

      24KB