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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    06/11/2023, 20:44

General

  • Target

    NEAS.2023-09-28_6e562d07f07ac338f3773fc6babdfbd0_cryptolocker.exe

  • Size

    75KB

  • MD5

    6e562d07f07ac338f3773fc6babdfbd0

  • SHA1

    fdb78a19b4bcaa817ef92c4c8af037a572053d22

  • SHA256

    e0896bcd9c31a2a99407f7ae8f0601c6d035de501c074c8ebac11076c1b60059

  • SHA512

    036d0f1ec996b9eada30d86ca58a2a7e44fb7ca90c34737054e42482b8f94cb2071f1db9012c831a78294589b9f3a1d5cc708f868102c741161c101ae12895bf

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyYAf:zCsanOtEvwDpjQ

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 7 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\NEAS.2023-09-28_6e562d07f07ac338f3773fc6babdfbd0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-28_6e562d07f07ac338f3773fc6babdfbd0_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    75KB

    MD5

    5a95c42b3342278bfff71523b6fe7cd8

    SHA1

    e352d82a78dc6e728050a036bec809977a776797

    SHA256

    e5582820a55eca90f5ea4220f1bca380470d1dc3644070c7d0fe969c98072f9e

    SHA512

    89a560046cf12641676360ef4cfeeff7505eb96f5a4054b425491b779c805512370d0ae8dbc7a253215d25ff13348f44f9e332e09db8d466ab638249a54b520d

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

    Filesize

    75KB

    MD5

    5a95c42b3342278bfff71523b6fe7cd8

    SHA1

    e352d82a78dc6e728050a036bec809977a776797

    SHA256

    e5582820a55eca90f5ea4220f1bca380470d1dc3644070c7d0fe969c98072f9e

    SHA512

    89a560046cf12641676360ef4cfeeff7505eb96f5a4054b425491b779c805512370d0ae8dbc7a253215d25ff13348f44f9e332e09db8d466ab638249a54b520d

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

    Filesize

    75KB

    MD5

    5a95c42b3342278bfff71523b6fe7cd8

    SHA1

    e352d82a78dc6e728050a036bec809977a776797

    SHA256

    e5582820a55eca90f5ea4220f1bca380470d1dc3644070c7d0fe969c98072f9e

    SHA512

    89a560046cf12641676360ef4cfeeff7505eb96f5a4054b425491b779c805512370d0ae8dbc7a253215d25ff13348f44f9e332e09db8d466ab638249a54b520d

  • memory/1272-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1272-1-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1272-3-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/1272-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1272-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2956-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2956-19-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2956-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2956-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB