Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07-03-2024 02:46

General

  • Target

    2024-03-07_d6a7e98bb145630a0c649af867308b25_cryptolocker.exe

  • Size

    117KB

  • MD5

    d6a7e98bb145630a0c649af867308b25

  • SHA1

    cfcb768c092dba482c6c32eb0f29384661518d45

  • SHA256

    3c797d19d2b3e7c562c67ede9c9f363011a3f9becda7ffc85ca1be905968706b

  • SHA512

    c7f30344370c5df982764a8e3518e960ae2ede07ba55cdd64ca87be66149bfb3520f35143d9df904368c4a880cdf360ca55253d1834d527235e022df78542e7a

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgerar/+X:T6a+rdOOtEvwDpjLzl

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-07_d6a7e98bb145630a0c649af867308b25_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_d6a7e98bb145630a0c649af867308b25_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    117KB

    MD5

    8cf89e8fbcb857f8b562278cfafd8cdb

    SHA1

    91b1223a3d6845397486171eca66ca67b2916450

    SHA256

    7e34a2f3663436f04142fcda8f7b4a56418bc97c6d1e9f14b6fd142c76355508

    SHA512

    c900cb875cb6bc8824f3136a5fd16739e573ca93b6b4fe076ec92a50ea242f9a6e209dd516657e54685262df26022214cf91e33f2f6de517f63cf5bee5a21c5f

  • memory/2152-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2152-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2152-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3032-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3032-3-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/3032-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB