Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2024 15:13

General

  • Target

    2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe

  • Size

    88KB

  • MD5

    10cafc2bbb00eec3d59ae890c9d9522b

  • SHA1

    002dda9ff12082f020910c138b7bf2a4e34b073b

  • SHA256

    40f855d6e9c53d9ffc19ea224b279ec14af38b549453bf61646cf688da09043e

  • SHA512

    1bca4a670fb8b572eab4cffb6ce24719f8913816a279a9e46528b6fc9f2726916f255eb01f734ef02811258bd6e939f73673b32230e0d0c0a4d2f614f2684ac3

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRMy87vg:zCsanOtEvwDpjI

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 5 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\2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-03_10cafc2bbb00eec3d59ae890c9d9522b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4028
    • 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:2408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    524cbfd9a6e11b55108fc2cd65f82d29

    SHA1

    029eb15651c862ff0c7a5cc09019e633e2477f5f

    SHA256

    fb0e7a315d2c933fb2e37d754b685d384bf87c19c2f7d0c4a85d02a60f8c0b80

    SHA512

    ab4a5f97b42b79a61f3552cd7ba03dc8d98ee705de19d7c3eb105d0aa82edec78d3d52de2e8d3ca75e5ae4c2f8513506062cf9323dd46e3d0f8247acc49dc531

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2408-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2408-20-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/2408-23-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2408-47-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4028-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4028-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4028-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4028-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/4028-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB