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Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231025-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 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⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4968

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

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

    Filesize

    75KB

    MD5

    5a95c42b3342278bfff71523b6fe7cd8

    SHA1

    e352d82a78dc6e728050a036bec809977a776797

    SHA256

    e5582820a55eca90f5ea4220f1bca380470d1dc3644070c7d0fe969c98072f9e

    SHA512

    89a560046cf12641676360ef4cfeeff7505eb96f5a4054b425491b779c805512370d0ae8dbc7a253215d25ff13348f44f9e332e09db8d466ab638249a54b520d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3056-1-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/3056-2-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/3056-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4968-20-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/4968-19-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/4968-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB