Analysis

  • max time kernel
    131s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2024, 02:47

General

  • Target

    2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe

  • Size

    41KB

  • MD5

    f13461eca4f8ab8d57209349123049f1

  • SHA1

    d1d9c873e904bde081f73f41fa76ff6a2afdf6b0

  • SHA256

    9e80458fb07a6188db29019dbf2de00e8aed4f8db50916d5a5c027448a1d5f1b

  • SHA512

    ab750ab4e1c1bf8a703500b36ff0a49390636fa86ec68364a7c22ddd5154f348ae7635f856acaabd684d6efe7633bb30871cd9b910e1c806e2ae9e298b75ed02

  • SSDEEP

    384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/EZCz:btB9g/WItCSsAGjX7e9N0hunKLYW+

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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4596
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    7161631132d7fe20a674abf6730f2091

    SHA1

    b04e02f250ad3757de529174e8d640c241a3839b

    SHA256

    88126198d0fe0981753be47d88ed8af3b4d0b168a7d5ebca5ae2ed3b7be112e7

    SHA512

    3d0f8327e152f4b90049fb1998beaa1151e53fde950d79db3c160cf562598017a4dce2d145e0e9a8ede75ef0948334318b1636572e82e3b8be640295c24ddeb4

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

    Filesize

    185B

    MD5

    36066ea0dda8904891cb28ad064f6f5e

    SHA1

    f554e604f7782e108eb073c4f7bf11c6b79e2182

    SHA256

    dbb4956e40827acd0e2816fb0556d46311aea7566b8040b1d6ad287679cd964e

    SHA512

    e342c3007a80dce5798233e295e7b9f3bcfb393952dfea3d60501a86ff902d45645b665251f53fb4c527c38464b09393260ec82bec1ec8b76fbc04447f34038e

  • memory/440-25-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/4596-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/4596-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

    Filesize

    24KB

  • memory/4596-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB