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Analysis

  • max time kernel
    138s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2023, 10:20

General

  • Target

    NEAS.2023-09-07_7c51b774b72c23e11fb2489aa6eb4a5c_cryptolocker_JC.exe

  • Size

    44KB

  • MD5

    7c51b774b72c23e11fb2489aa6eb4a5c

  • SHA1

    f5dda175bb66d61f0e6bdeb686be153911f1dfbc

  • SHA256

    5cca4b73cf871a778d5ccfc50fa2f812e2ab966fba772bc87dea689ffb6283d1

  • SHA512

    d7b0e20a82b5f39a40009c1341cc05be4948d4df40d8a35df6213bd16584f0ffb02423c976834d2c5749c61bd7363e0839619b9d8e74c61e6c7554ba6899511e

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr46xdUUMV:vj+jsMQMOtEvwDpj5Hczer5iNV

Score
7/10

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
  • 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\NEAS.2023-09-07_7c51b774b72c23e11fb2489aa6eb4a5c_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-07_7c51b774b72c23e11fb2489aa6eb4a5c_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4324
    • 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:1984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    4614fb7c4c12041673f1e74df4350eb5

    SHA1

    bcdcb4dacb7ffac6bc334628ae056e27b210161b

    SHA256

    2372baf8a63546189cc806b71ded54c408d0ecfd8c0687306a629be9fbd645b5

    SHA512

    a6679f3afaed2abbe1f107a36ab1683e9492af41ac1cf0ea365437fa9e55403534ce37606f87157fa6f79404788a5c01a79573ca2d9cceffd483d0cb7383c53b

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

    Filesize

    44KB

    MD5

    4614fb7c4c12041673f1e74df4350eb5

    SHA1

    bcdcb4dacb7ffac6bc334628ae056e27b210161b

    SHA256

    2372baf8a63546189cc806b71ded54c408d0ecfd8c0687306a629be9fbd645b5

    SHA512

    a6679f3afaed2abbe1f107a36ab1683e9492af41ac1cf0ea365437fa9e55403534ce37606f87157fa6f79404788a5c01a79573ca2d9cceffd483d0cb7383c53b

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

    Filesize

    44KB

    MD5

    4614fb7c4c12041673f1e74df4350eb5

    SHA1

    bcdcb4dacb7ffac6bc334628ae056e27b210161b

    SHA256

    2372baf8a63546189cc806b71ded54c408d0ecfd8c0687306a629be9fbd645b5

    SHA512

    a6679f3afaed2abbe1f107a36ab1683e9492af41ac1cf0ea365437fa9e55403534ce37606f87157fa6f79404788a5c01a79573ca2d9cceffd483d0cb7383c53b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1984-18-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/1984-17-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/4324-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4324-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4324-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB