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Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27/05/2024, 19:33

General

  • Target

    2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe

  • Size

    69KB

  • MD5

    69c9782fe9648090006ec238915006aa

  • SHA1

    51cc6569512943ea4474c4b1b4f0f3f3ea9764d3

  • SHA256

    8b8b2444ddba70fedc57edf0607bd23165cc73a8e850c74a5983e98c7f0d3e9f

  • SHA512

    c0efca8a9ae650ac1cf14abaa36882318d11714e5c661f69dd9eb9a452a99a9ea9475f13eeb19e43496809f18ba8182f8ee33fdd880122056db8f4952e01f3a0

  • SSDEEP

    1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAeY:78SEOtEvwDpjWYvQd2PV

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2648
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    065346d792bc58a094110afd686ad858

    SHA1

    456e25e118122fc45d781ef8b38e01971944ddfa

    SHA256

    86f748759f6cb51835caaf97765722a677b28dc9f1b8e723a79be830b351a22a

    SHA512

    377ed758feeb8142300261665e7e3b325f62884a28f14bd02ae27c32d0818d38c3f30ad3160729b4c74e6741dc9022211a10ec30aa5fe02db9b5e0eb172936c0

  • memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2648-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2648-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2648-9-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2648-14-0x0000000002480000-0x000000000248F000-memory.dmp

    Filesize

    60KB

  • memory/3012-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3012-20-0x0000000000450000-0x0000000000456000-memory.dmp

    Filesize

    24KB

  • memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB