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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 05:29

General

  • Target

    2024-05-24_60cafffcde47545c269b9b99503346f0_cryptolocker.exe

  • Size

    38KB

  • MD5

    60cafffcde47545c269b9b99503346f0

  • SHA1

    7747343dd97ab74ad7e666d9f1e4a385e54d897c

  • SHA256

    23c40bb13e02f4220907f2eff9457f6196338c14a57c8a253c55af3d7e0bdde1

  • SHA512

    1e43873c6b99511305413275d5d986d3bfe28a2623377f85bdbabf9dd4bbc34cc49473cffc380f8e9772b8dbb41f3314de9a168eb9aad0a50657dca21b24eb41

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4U:fT+hsMQMOtEvwDpjoIHU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-24_60cafffcde47545c269b9b99503346f0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_60cafffcde47545c269b9b99503346f0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5076
    • 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:2512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    aa6cf139dff405e4f7c87c55b504c710

    SHA1

    f75363e27611956e6339bda9da99bc2b6d050ec9

    SHA256

    1c503e3150264daaabc5564809e31a92c3a800032d5f9e69af20880eeb346f16

    SHA512

    8579b0aeba0901d9d95d74f07cc9d567aa0c016da66c74c218f6c3975e489816141082e477ed793381b126373671aade74020832369b2a5535adc24dec1ce112

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2512-17-0x00000000007C0000-0x00000000007C6000-memory.dmp

    Filesize

    24KB

  • memory/2512-19-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/5076-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/5076-1-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/5076-8-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB