Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/08/2023, 17:31

General

  • Target

    f7effd99326113cacbe942509aedf53a_cryptolocker_JC.exe

  • Size

    74KB

  • MD5

    f7effd99326113cacbe942509aedf53a

  • SHA1

    df8a41738920b1c072d3ca529108a072ceb7f0fe

  • SHA256

    0ea99acadac4792d788b06ea9a8369aec7a660863bcb0cbdf099f719b0964d9d

  • SHA512

    5f68c09d59c73fba286fff4c92ad4b6c6102ed081cde5538259e10f5410916d4cfa1a691d174adbbe4b3506c3e49439eedc07729af337010ffb14d24cb06c150

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWaJ:vCjsIOtEvwDpj5H9YvQd2F

Score
7/10

Malware Config

Signatures

  • 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\f7effd99326113cacbe942509aedf53a_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\f7effd99326113cacbe942509aedf53a_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3240
    • 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:2080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    75KB

    MD5

    edc7f173d88cd36328784cb288c625ff

    SHA1

    7d62e1176d48b4d52da61c952b01d6439448939e

    SHA256

    8f7cd420d511554afc6de742f9ec609bb01447f9850cebf7e9872188c4b1903f

    SHA512

    e5d0c1e922912130d8e1bc6eaad626fbb6b635a8e0d8b7615efb639e9e7d79099dee6ee66efd29c67fb62616a6efffcf53315cd05314faa6459f324cab47faef

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

    Filesize

    75KB

    MD5

    edc7f173d88cd36328784cb288c625ff

    SHA1

    7d62e1176d48b4d52da61c952b01d6439448939e

    SHA256

    8f7cd420d511554afc6de742f9ec609bb01447f9850cebf7e9872188c4b1903f

    SHA512

    e5d0c1e922912130d8e1bc6eaad626fbb6b635a8e0d8b7615efb639e9e7d79099dee6ee66efd29c67fb62616a6efffcf53315cd05314faa6459f324cab47faef

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

    Filesize

    75KB

    MD5

    edc7f173d88cd36328784cb288c625ff

    SHA1

    7d62e1176d48b4d52da61c952b01d6439448939e

    SHA256

    8f7cd420d511554afc6de742f9ec609bb01447f9850cebf7e9872188c4b1903f

    SHA512

    e5d0c1e922912130d8e1bc6eaad626fbb6b635a8e0d8b7615efb639e9e7d79099dee6ee66efd29c67fb62616a6efffcf53315cd05314faa6459f324cab47faef

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2080-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2080-17-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2080-46-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3240-0-0x0000000002310000-0x0000000002316000-memory.dmp

    Filesize

    24KB

  • memory/3240-1-0x0000000002310000-0x0000000002316000-memory.dmp

    Filesize

    24KB

  • memory/3240-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB