Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 20:11

General

  • Target

    2024-06-01_9204c24953765fefad0610b8672c6b5d_cryptolocker.exe

  • Size

    95KB

  • MD5

    9204c24953765fefad0610b8672c6b5d

  • SHA1

    dd64f20ee9124c2ed2177d43cc63614991d7c44f

  • SHA256

    c30230695ee2532622f5d3baac2f6a9c5eec7071d3fd14f526e6a60223a23fd5

  • SHA512

    92d64d683cc110a86bf39a03a954f650cd13da1ff821d38eb579393dd20d53b05591a246cb4c8f4cf27c3c8713c4e5e3ecd39186e2effb5766941e80aac30173

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/k6:zCsanOtEvwDpjBt

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • 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\2024-06-01_9204c24953765fefad0610b8672c6b5d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_9204c24953765fefad0610b8672c6b5d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1868
    • 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:2760

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          95KB

          MD5

          30b5fa02da68778b02dce024a7625afc

          SHA1

          1bdc511905dc0fc03ef3b30730d1ac65c917e204

          SHA256

          7ba2cf661aecad2d5836c8abfd409dbbc5036b1074a2ba612a61167bbc43c1c6

          SHA512

          2cf84b35b637c898ab4e80707964616e081c498e26b9c0b8f4a28975f60213c97afa90fe99fe46a7366c29fef0d91876e07aa830600df853ccff6ce47392ab39

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1868-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1868-1-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/1868-2-0x0000000002110000-0x0000000002116000-memory.dmp

          Filesize

          24KB

        • memory/1868-9-0x0000000000750000-0x0000000000756000-memory.dmp

          Filesize

          24KB

        • memory/1868-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2760-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2760-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2760-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2760-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB