Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 20:40

General

  • Target

    2024-05-22_ab0f9c1a51e2cd504d3fcc4bfc58b96a_cryptolocker.exe

  • Size

    42KB

  • MD5

    ab0f9c1a51e2cd504d3fcc4bfc58b96a

  • SHA1

    b68f833f0aaa948201c9afe836e7f436b0e4663a

  • SHA256

    e3a1498a355988dc0808abe2ed8f06c0ebf256fa9f5dc52f1ed9662fd30f5086

  • SHA512

    95eefc4736da0781fab89f3d83517b350ac0610fcf1968fe66550c5f55b0547987dd9a71bae70793d75ebeb91c66a2ace2fdf7d0cb7f06a290072f37e3ee069f

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xLg:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7G

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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_ab0f9c1a51e2cd504d3fcc4bfc58b96a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_ab0f9c1a51e2cd504d3fcc4bfc58b96a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:380
    • 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:4652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    76383cb05627c0beb48b323ddd4edffc

    SHA1

    77f4718b4ebf9d81e0fd188144a45b4965eb54cf

    SHA256

    13e247cf2b17610ddd2efc830b530ebb94fd5f06d5060375ddff3c274252c925

    SHA512

    36b8dc7237c8e972eaa5f89854c26603ec5354bdfaf7b826c939d64ced2cb0551db46a94b13eb5c1f52fd38cb85c81b27162abc3383ef9054e5375230dbd450a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/380-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/380-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/380-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/380-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/380-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4652-19-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/4652-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB