Analysis

  • max time kernel
    133s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/05/2024, 05:02

General

  • Target

    2024-05-04_dc5ea81962d7e3a0a27efdf5ce8a4996_cryptolocker.exe

  • Size

    40KB

  • MD5

    dc5ea81962d7e3a0a27efdf5ce8a4996

  • SHA1

    f01617771e95244f9a9b11c74fe3b05265c87ad0

  • SHA256

    130e36d110a8ff513e5afb8b5cd9b57efa1fb6c816fb2b863023a2d6d11334a4

  • SHA512

    dea60df7d711d699e2af88ea401a89ca57c071853e00a75cdfcc80be4627a719f37a57edb944f57e7ed4dbd2ae9627789caa0b8732ce95c3ed400ff102844f76

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuD+J:ZzFbxmLPWQMOtEvwDpjLeJAsKck

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • 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\2024-05-04_dc5ea81962d7e3a0a27efdf5ce8a4996_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-04_dc5ea81962d7e3a0a27efdf5ce8a4996_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1748
    • 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:1612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    5c970e04160cfca86533978e7de7161d

    SHA1

    f5bcf31403e6f3f329793d5d45da0ee811b54bda

    SHA256

    551a638d8014d88d7d1114d7bdfd76118f6e9671e360fa587ebde9615865fea7

    SHA512

    a4b2a2c00d781c29f8a65b1fd40ae05a645141bdcb4662e53de09ae67e82f4d2316ff2a6a4ea636c9035108a084ddf1d89c3b0e26ca683c4a6d995c608927e47

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1612-19-0x0000000000460000-0x00000000004A0000-memory.dmp

    Filesize

    256KB

  • memory/1612-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1612-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1748-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1748-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1748-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1748-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1748-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB