Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 11:53

General

  • Target

    2024-02-14_60ada4a6356881aaff2c94f5d6dfff1d_cryptolocker.exe

  • Size

    60KB

  • MD5

    60ada4a6356881aaff2c94f5d6dfff1d

  • SHA1

    f935078cfe22ece5ec9b71ba1e314b93fa55459f

  • SHA256

    47b1d2b3834e68d359aefa40fdce7a42db32d8672d43aa5867764940bed85aa4

  • SHA512

    e2a2978af6e78a53ef7484bdf4492ae1584e816e1382719f4c77fc777f9406c5b01321bd7e32a11c3aa3cfec0af8e6d240f728ed62fd4c44fdf46c40152eae7a

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5m8o:zj+soPSMOtEvwDpj4kpmeLmL

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\2024-02-14_60ada4a6356881aaff2c94f5d6dfff1d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_60ada4a6356881aaff2c94f5d6dfff1d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4836
    • 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:1208

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          61KB

          MD5

          195a9ec08c42a8a8ca795c6b2346b324

          SHA1

          7cb44f25b801b03bb296390d3113f318323bd04b

          SHA256

          d3c54b8ee0669f355384338e89d49e5f6615a837899d700e6bb3cd9c1bfc8f6b

          SHA512

          4ac8fbe6da8ed299f0b0c23e02fa2e2e5ec18e50d813071dd397fe6765826833d96417337e409cfb2cd7f6ef2e7f60868088f81c82b109bfc970ec42db334315

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1208-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1208-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/1208-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/1208-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4836-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4836-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/4836-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB

        • memory/4836-3-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4836-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB