Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-09-2023 14:42

General

  • Target

    2023-08-26_48b52b92331789aa67dd8b9f18c4a254_cryptolocker_JC.exe

  • Size

    78KB

  • MD5

    48b52b92331789aa67dd8b9f18c4a254

  • SHA1

    57223ba8539e33be1f3564928d1abf91876c0b88

  • SHA256

    963e43e320b2467555ae3e966ee6ec7fcdc6b6ba66ab25954a7aefb6ea9d6a88

  • SHA512

    9345a76cb7ab0b45c2b5356ab75f20c62d2772ed2cd7a744571b147276c9bf38c9c2cc1fe3ed268f931c8c8a34c52ea58ebc91a491fba082a161e171f485275d

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1jF:zCsanOtEvwDpjT

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 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-08-26_48b52b92331789aa67dd8b9f18c4a254_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-26_48b52b92331789aa67dd8b9f18c4a254_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4964
    • 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:564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    85142eb8650c12b8bee66c514a4d4bf2

    SHA1

    33d011944010aa622512e405bf4e9b27fb12eb3a

    SHA256

    6088d8e433029a3c2c22fb03b7a8ac191c3b44c6c21f92aed517ba14049a803a

    SHA512

    7b173b3fe9a4aa93b75da30575eb79079f33fb943b205666b86e5cfd68ac62ce620be5b659f3000eab50e06ce9b366458c69a1728b7d6d72586547073b6bce77

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

    Filesize

    78KB

    MD5

    85142eb8650c12b8bee66c514a4d4bf2

    SHA1

    33d011944010aa622512e405bf4e9b27fb12eb3a

    SHA256

    6088d8e433029a3c2c22fb03b7a8ac191c3b44c6c21f92aed517ba14049a803a

    SHA512

    7b173b3fe9a4aa93b75da30575eb79079f33fb943b205666b86e5cfd68ac62ce620be5b659f3000eab50e06ce9b366458c69a1728b7d6d72586547073b6bce77

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

    Filesize

    78KB

    MD5

    85142eb8650c12b8bee66c514a4d4bf2

    SHA1

    33d011944010aa622512e405bf4e9b27fb12eb3a

    SHA256

    6088d8e433029a3c2c22fb03b7a8ac191c3b44c6c21f92aed517ba14049a803a

    SHA512

    7b173b3fe9a4aa93b75da30575eb79079f33fb943b205666b86e5cfd68ac62ce620be5b659f3000eab50e06ce9b366458c69a1728b7d6d72586547073b6bce77

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/564-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/564-21-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/564-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/564-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4964-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4964-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4964-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB