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Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2024, 08:37

General

  • Target

    2024-02-14_7b2745d2b31177e91eb76ec278a0501e_cryptolocker.exe

  • Size

    95KB

  • MD5

    7b2745d2b31177e91eb76ec278a0501e

  • SHA1

    4d240f06f51eef6adfd8f81f2cdf0287933863b4

  • SHA256

    5ec83493c39022504d82a616efe34145ec95eaf591eb45e4e8767aa808faaf99

  • SHA512

    0ae3517573bc7a752012d3d1b5a2e8d368680ac87974480a80829ab5ed6f334111a1ad416eef3ca10d9ff76440318d0687df8699a145e791fa2afa8cf4905f65

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp015r:AnBdOOtEvwDpj6zX

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 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\2024-02-14_7b2745d2b31177e91eb76ec278a0501e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_7b2745d2b31177e91eb76ec278a0501e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    95KB

    MD5

    03dd3f351a3549990ac5705d608130ca

    SHA1

    b426d9b96dafa0e965733ff500d5a815f02db44a

    SHA256

    0d4a0ad1460702712db6f8d84a825550222aa47aebb19bf9acb25b429566ea93

    SHA512

    8bce3d9ebd26a6a9e200729aadb2fa3ed9e32d41db996a5470fcc8aab238341319020ddbd7f040951688e069649d7431ee391dfc0c8384f9252a49748d42b669

  • memory/1068-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1068-20-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/1068-19-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/1068-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2000-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2000-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2000-3-0x0000000000200000-0x0000000000206000-memory.dmp

    Filesize

    24KB

  • memory/2000-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2000-12-0x0000000001CD0000-0x0000000001CDF000-memory.dmp

    Filesize

    60KB

  • memory/2000-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB