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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    01/05/2024, 04:11

General

  • Target

    2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe

  • Size

    72KB

  • MD5

    4f5207feb7eccb1adeaa107269df8244

  • SHA1

    ada94e48f91aab111f9ee5461baeeae07fe063d6

  • SHA256

    9585642d7f78ee74bd1d9ec7640f1bfebed164cbc6cda690ffea1f30f8fed1d7

  • SHA512

    abc894abfdf37309d08f4363be34473c73fbf10e5471eeb265d89d1c568fa4201a910c4eba6b6b0d4a04868e3eb223fc44b7c1cc7924b8a86b60b84ffa653d2c

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9m:C4Q2c94OtEvwDpj4H8zz

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-01_4f5207feb7eccb1adeaa107269df8244_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:3036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    393df555e2a156c40a48c0aab6ee5270

    SHA1

    6e0c7e935ae4df0f9269cce23f6d24bcedbfe97e

    SHA256

    fc322b84fd83c1559f3e5c88c0f0215dd6efa431d1d2b58949f8b574640c51f0

    SHA512

    8c2366b212eeed2f9038d277d43010222492e8ad20baf9f2fb04a39ab3dec2b87b4cc01a6085390dc7677e99e876997721a66892651fffdc0fb422b9071f958f

  • memory/1664-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1664-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1664-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1664-3-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/1664-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3036-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/3036-18-0x0000000000210000-0x0000000000216000-memory.dmp

    Filesize

    24KB