Analysis

  • max time kernel
    130s
  • max time network
    151s
  • 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, 08:43

General

  • Target

    2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe

  • Size

    44KB

  • MD5

    bac8590b60290f4422422a529c513a0f

  • SHA1

    40e79e2e11587b0673e8eef18930197b1936ecc4

  • SHA256

    3ddf136e78cc5ade5a41e8a8293cd4ed9f2f0ee067a91a1e977bc9f6201fb5b0

  • SHA512

    8fe2391e90ee5050b4f3a12f0fcb85016eb4fabb3266e6dfd113e4d53d657772e733e9015fbf16568f31addb0656a5d18d894d9ffb481d9c33d6f8403c489672

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS57:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+C

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    3fbeaeec2d36e389d6757ec4d8a1c963

    SHA1

    f9d1376b13073c9bfd8b376e754cba3f145f745e

    SHA256

    8531d9fdf883decb87584725de93b97dd901e3a9f4fa0486378a581503c94f7b

    SHA512

    1809c02ad9ac2536f133c2d2253a2c369be0c3b9c00dfbcefce5c4cfb8006546ffe870db6fbef64e02fe4b46a433306aaa075cf1634d5a16309a2ef0098fa0fd

  • memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1848-1-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/1848-2-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/1848-3-0x0000000000890000-0x0000000000896000-memory.dmp

    Filesize

    24KB

  • memory/1848-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2564-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/2564-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB