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Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/09/2024, 04:56

General

  • Target

    2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe

  • Size

    37KB

  • MD5

    fd6c8395f522d4bf16080df0c95d5514

  • SHA1

    c00cf5612f74d6fe17b3a74e9ae0b8399004ead3

  • SHA256

    63241a0733aa41c7804fdad349240d4eb07cd402e8ed0f9fb35ae596671a68cc

  • SHA512

    d23b9d7cd1c6216c4a7a89cfb68a7e113980d859aaae74521859821c02613e23876c97c12177cbcbf577a1b51e2e304837ee58080968419c7cc87cef09555a11

  • SSDEEP

    768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlU7hl:b/pYayGig5HjS3ull

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 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.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Users\Admin\AppData\Local\Temp\retln.exe
      "C:\Users\Admin\AppData\Local\Temp\retln.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    5ceb4dcc0e96bbf5885e315b07131172

    SHA1

    a3dba6ffca77c63ffa78442572bdacb963a55d10

    SHA256

    f6bc2d6017fad7e630cef53c917b94157fc306399fab63447d37968c46ce09d1

    SHA512

    39babb4a772c4b346f4c42b39e44d57a12cb88fe7d3506c003880e297b36c7a72a501511816fa2d2ff1d4c33d623ca5f86686bdcc410681e2e11fcaedaf1e900

  • memory/2736-0-0x0000000002340000-0x0000000002346000-memory.dmp

    Filesize

    24KB

  • memory/2736-1-0x0000000002340000-0x0000000002346000-memory.dmp

    Filesize

    24KB

  • memory/2736-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4908-19-0x0000000001F80000-0x0000000001F86000-memory.dmp

    Filesize

    24KB