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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20/03/2024, 02:54

General

  • Target

    2024-03-20_97df09a134118f1371d9dc274f84bdfc_cryptolocker.exe

  • Size

    71KB

  • MD5

    97df09a134118f1371d9dc274f84bdfc

  • SHA1

    7dfdca384e32b0d5d0e77cb75648c2416da1578e

  • SHA256

    8f4d7e7d41ebb684db02fc3feb0403566a810136d97bb17bb87ca037464b1126

  • SHA512

    aeefbf93c3d61fe89eb41229494debd514caa46587031fc0398b4d9ebead915ef9be1751ba3348dc18a85ab3b042b76915d225b878af5e3a41ac3283e25c0461

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeBt:z6a+CdOOtEvwDpjQP

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\2024-03-20_97df09a134118f1371d9dc274f84bdfc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-20_97df09a134118f1371d9dc274f84bdfc_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2484
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    b19374e363b2a0352eccaae740d4a88d

    SHA1

    b84b4a9a02ecf57df374dbd5687cdfba17cc0c61

    SHA256

    1ed4e2d055dcb5c7d881804af21bd819db1bd5dd6b8400e002bcd163305e2767

    SHA512

    aaf7b6dd274e710afdb071d7715b7963502b4d4e51e50434697fe3763dad50d1775f1acf12a2bea18edaa48983649dadef55e3510782ea2cf70c2a336d3c4a07

  • memory/2484-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2484-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2484-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2484-4-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2484-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2484-14-0x0000000002800000-0x0000000002810000-memory.dmp

    Filesize

    64KB

  • memory/2540-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2540-26-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2540-19-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB