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Analysis

  • max time kernel
    132s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/03/2024, 10:34

General

  • Target

    2024-03-14_5b1952fa40ba7aa71bd5b757b7912841_cryptolocker.exe

  • Size

    78KB

  • MD5

    5b1952fa40ba7aa71bd5b757b7912841

  • SHA1

    7903cee7db6ce33d95f95e77d154eb0ccdd032bd

  • SHA256

    34ef0e22c2418e90a16c3e0fbd73d978ec3c27e2563fd9b6f953b3c1a13fcdf4

  • SHA512

    fd39d11e628a0ddf4af6aba07cd14da332d0350ad5490cd179b01b89c6d2395f2b716da6c27cb920785e234262864b48d8801d25d64529e6fadff27e1fc677e6

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qu:zCsanOtEvwDpji

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\2024-03-14_5b1952fa40ba7aa71bd5b757b7912841_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-14_5b1952fa40ba7aa71bd5b757b7912841_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4304
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:3184

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    5d49d735e946d175ebf5af94165866d1

    SHA1

    537be63cfe103928cce8bb3df09829118e76daaa

    SHA256

    d0956c337a7dfc6c70d5fe38a998697184912de71aa41863d43c28f4bc64c926

    SHA512

    0cf4aa5069bcc7ef1d1b029e8ad6dea228c2c78a11b53a6734ab1e354ed3d58c4a84338bf4d34bb0445e035c105a086ccb23db87a97116ae0af6be31026106e7

  • memory/3184-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3184-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3184-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3184-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4304-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4304-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4304-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4304-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4304-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB