Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2023 16:51

General

  • Target

    321432472898040d4cfd1fab0c6a8e2a_cryptolocker_JC.exe

  • Size

    88KB

  • MD5

    321432472898040d4cfd1fab0c6a8e2a

  • SHA1

    dd69de5a0e261462db4f0b6f37fbad75b1dfa669

  • SHA256

    1e0f1d790c4be956bff287f2d36ea14dfd5e1960bc86d476f651e00cc3c9362f

  • SHA512

    2d66a8d6a9c729cd11ea601102b3a07e0e587a526fe233f6773845463b1e23e2896eaf215e83b84f0237dfbf46e7f0b9b2876a6f00517fd1a0ef57c46d7c0f2d

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDp5:zCsanOtEvwDpji

Score
7/10
upx

Malware Config

Signatures

  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\321432472898040d4cfd1fab0c6a8e2a_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\321432472898040d4cfd1fab0c6a8e2a_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4392
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    10216761a2f175cc8f15ed2a7dd26086

    SHA1

    e630b9ecec23c0dbb59f597f66f3961facec2d5f

    SHA256

    c1e147b30616b23a93caea13ba47547719f78564d524ad20df2c2e64676e2d61

    SHA512

    5cee8f7cbf8f4a6162bac974b72c88a6a18658a36da80f9baab1a08c718683dba17585eb55fa34449391edde2d5f4d29ed2e87b46b72de80f143a6548c1b8497

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

    Filesize

    88KB

    MD5

    10216761a2f175cc8f15ed2a7dd26086

    SHA1

    e630b9ecec23c0dbb59f597f66f3961facec2d5f

    SHA256

    c1e147b30616b23a93caea13ba47547719f78564d524ad20df2c2e64676e2d61

    SHA512

    5cee8f7cbf8f4a6162bac974b72c88a6a18658a36da80f9baab1a08c718683dba17585eb55fa34449391edde2d5f4d29ed2e87b46b72de80f143a6548c1b8497

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

    Filesize

    88KB

    MD5

    10216761a2f175cc8f15ed2a7dd26086

    SHA1

    e630b9ecec23c0dbb59f597f66f3961facec2d5f

    SHA256

    c1e147b30616b23a93caea13ba47547719f78564d524ad20df2c2e64676e2d61

    SHA512

    5cee8f7cbf8f4a6162bac974b72c88a6a18658a36da80f9baab1a08c718683dba17585eb55fa34449391edde2d5f4d29ed2e87b46b72de80f143a6548c1b8497

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4288-153-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/4288-152-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/4288-181-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4392-133-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4392-134-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4392-135-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4392-136-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4392-150-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB