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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2024, 03:25

General

  • Target

    2024-03-09_2abf457fc624dd3567507ba72039124b_cryptolocker.exe

  • Size

    82KB

  • MD5

    2abf457fc624dd3567507ba72039124b

  • SHA1

    dc8d7dfff0deb981ef7d529fdae976c2e646d157

  • SHA256

    9f77fda995e6ca13def67c74ff932a549590fe9ea2d7424353fc687b071dd672

  • SHA512

    0f2e1491812c585e5bc5b52fa2b2af12b4d0258132b9826bd6b6c85eee4a5a4e0b30b0924792e655500a96bc8a88d0ba269a4a57ce960a80dc7590dec57ecf30

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7vS:T6a+rdOOtEvwDpjNe

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 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-09_2abf457fc624dd3567507ba72039124b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-09_2abf457fc624dd3567507ba72039124b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    5859cd53bf48fbf713b11b8c52fdea3b

    SHA1

    54292fd589c272fd91d6853c8a8c8ba182d05298

    SHA256

    02fe446837bace3dba24b71f41612f2677ce9e74886ca2ef6571fb551f204afc

    SHA512

    40b79ae39dc856d1093217581f1c86e6153b38a2bcd7ca742dd57dd3ff49be4cae3a4ee56a7bd7e95d62a8849768ec8e22d35f78d04f9bac7ee4b0ddffdac1e3

  • memory/548-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/548-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/548-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/548-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/548-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3772-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3772-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3772-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3772-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB