Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-10-2024 08:43

General

  • Target

    2024-10-09_26854b78d871fe260957ec34ab28f35a_cryptolocker.exe

  • Size

    71KB

  • MD5

    26854b78d871fe260957ec34ab28f35a

  • SHA1

    a630521be0d35961eddb45e6cb6ec5e9bf97a55e

  • SHA256

    91991d09b5447cccc1253844d8d538a8d9f9ca11c96e8bcdf684966849b91f0a

  • SHA512

    4b8282d9632007db6686d8a47a72d1045d794c4b24903e65972a2295d0060462132d7c92c95db98775ec9d205debf8c35eca506b54d9e0f4530e9b2d4d8af620

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9U:C4Q2c94OtEvwDpj4H8z9

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
  • UPX packed file 4 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-09_26854b78d871fe260957ec34ab28f35a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-09_26854b78d871fe260957ec34ab28f35a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4248
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:372

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    9774db80092872068e6e2d9e9c1528e3

    SHA1

    1f5538815242211f7b1f1a2b3c9029ebd711fba2

    SHA256

    ed83660f80a5cfcef706c90c7cdc0a4db8c96a9ce3b9352c9128de412bbe1158

    SHA512

    55a8cff916101ffc8d482aa4c986c38abc49d469142e4b3d8efdb4ae34daa28814c026da52d8eeadc40933b330451c593f049dafbe73460649c933fc5244a58b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/372-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/372-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/372-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4248-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4248-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4248-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4248-3-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4248-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB