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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    28/05/2024, 03:35

General

  • Target

    2024-05-28_411c3d2d9fd9eca8fb33f250b91f86d2_cryptolocker.exe

  • Size

    34KB

  • MD5

    411c3d2d9fd9eca8fb33f250b91f86d2

  • SHA1

    9820f01197bed54093d53228ba3ece3f2a18370c

  • SHA256

    6aae30f2e7555d64b5d408d1f35b506a5836d0c3735867dbc9ddb698333cedb3

  • SHA512

    6be01c5cdfbbb93c6ae934b2e94233bfe5ba4f4f8268ba2ae7d8fb035358f867664023f7fd0414be7413a7969ad42432ad022dd4f60c3ce572a06db6dd66caf2

  • SSDEEP

    768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvtXq:bFPmpiif/oc+vXq

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-28_411c3d2d9fd9eca8fb33f250b91f86d2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_411c3d2d9fd9eca8fb33f250b91f86d2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:3004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\lossy.exe

    Filesize

    35KB

    MD5

    c33e0bec7f0f4f4a3cfa8cdd251458d6

    SHA1

    fd5d2546c73164bd26022e3ecc26a1f7406959b0

    SHA256

    a7fd59921cae71cb98fb1d2a7a9dd06bdfb538386bbd0160d25be1d01c635cd9

    SHA512

    bd275b1fa31d59c63cfc447495b418e029c48c51332e33767a4a0aaae21d1291435842c38e1eb0ee6b08e5df0f015f9421cc158ced9d3853392a5bbbac4587f8

  • memory/2284-0-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/2284-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2284-2-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2284-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2284-13-0x00000000021D0000-0x00000000021DE000-memory.dmp

    Filesize

    56KB

  • memory/2284-17-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/3004-18-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/3004-20-0x0000000000210000-0x0000000000216000-memory.dmp

    Filesize

    24KB

  • memory/3004-27-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/3004-28-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB