Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-05-2024 03:26

General

  • Target

    2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe

  • Size

    72KB

  • MD5

    2a239a39517a0645a7be12a1ef6f02eb

  • SHA1

    f7c8e73d176369947dbee54a79afc55d8dff2bae

  • SHA256

    18703721f358a6d3ada2ab93338e4a948b8a0a0d5dae9ab7321711230505e430

  • SHA512

    b784733692b8f665bf81a42eb3a723ab919e34a98d42e3cb229f26af483711051d908c519c96e6b4f8b5a260d448be0d40a0035b92184b358808b3a993f650b0

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95:C4Q2c94OtEvwDpj4H8zo

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    bc5218a5ea4a7e8bde2f8f09a2c40d45

    SHA1

    aaf40467a6b5402453013ce2e8bb059394f37049

    SHA256

    f18cb7148625b09ad087e9fddcfa32e02db183f61d6668a6a74f513190047484

    SHA512

    8148bd590037a48fd1df162ad144a5400830aff274d951ea59cc1aa2848d11781f7ee533d6ff51c509ef5504d2c1d898e0e16810cc577e2c20d1751746fac136

  • memory/2188-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2188-1-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2188-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2188-8-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2188-13-0x0000000002840000-0x0000000002850000-memory.dmp

    Filesize

    64KB

  • memory/2580-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2580-19-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2580-20-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB