Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2023, 15:40

General

  • Target

    NEAS.2023-09-26_493491142c47b371475a1f606765536e_cryptolocker_JC.exe

  • Size

    55KB

  • MD5

    493491142c47b371475a1f606765536e

  • SHA1

    229050a9930c05115438d3468ba7116cc611ac8f

  • SHA256

    4e25072227da79cb37ed3af6121f70902345aa0a9f862c9eb447635ba9408d23

  • SHA512

    7335b9756278f705dc6d09ea16dd04aab2c766db6a8bf292d538f8d8506ef9a6e92454bef3366d064a7b3f8b667ddf054a2785de51e6a25c271621766f01b0b2

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpiyJb:zj+soPSMOtEvwDpj4y+yJb

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-26_493491142c47b371475a1f606765536e_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-26_493491142c47b371475a1f606765536e_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3124
    • 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:3080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    e77a2bb68438e9b26cba6037fccd2f31

    SHA1

    c78f161f6756926e914a2e869b865dfc3a18aabe

    SHA256

    2977978d25e80d7d0f0efe0209f5cf970b9e3d9d04155a053176f7348c08bec2

    SHA512

    9aa7470183ac2c407362a45f1f3f2267f0920ba87171059a9d60b37872c2702fa1147b1fb9a466272d10a37f9daa9b586e3b369cc47de27c69ec663465216c6f

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

    Filesize

    55KB

    MD5

    e77a2bb68438e9b26cba6037fccd2f31

    SHA1

    c78f161f6756926e914a2e869b865dfc3a18aabe

    SHA256

    2977978d25e80d7d0f0efe0209f5cf970b9e3d9d04155a053176f7348c08bec2

    SHA512

    9aa7470183ac2c407362a45f1f3f2267f0920ba87171059a9d60b37872c2702fa1147b1fb9a466272d10a37f9daa9b586e3b369cc47de27c69ec663465216c6f

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

    Filesize

    55KB

    MD5

    e77a2bb68438e9b26cba6037fccd2f31

    SHA1

    c78f161f6756926e914a2e869b865dfc3a18aabe

    SHA256

    2977978d25e80d7d0f0efe0209f5cf970b9e3d9d04155a053176f7348c08bec2

    SHA512

    9aa7470183ac2c407362a45f1f3f2267f0920ba87171059a9d60b37872c2702fa1147b1fb9a466272d10a37f9daa9b586e3b369cc47de27c69ec663465216c6f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3080-47-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3124-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3124-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3124-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3124-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3124-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB