Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2024 04:05

General

  • Target

    2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe

  • Size

    81KB

  • MD5

    d00b77ffcac2dccc2e2e27ce0d28ac38

  • SHA1

    05308ca88fb6f980570bd0c9ff569ceae6b6eee4

  • SHA256

    ba56efb9da1477551c0eb699298da61c7d14d011036490603487453b68c5c47a

  • SHA512

    4b28d489c2eaec57daaebbecaa15a4c9d240ecb109dba6c4758b168fe102bae2ddd3264f0feb52ba7413e7ae0f225d4c6135b79f504f0390eaa7760b2c05a661

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe:TCjsIOtEvwDpj5HE/OUHnSMB

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2992
    • 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:4596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    81KB

    MD5

    11b9f0cf01e32a4510179ce95beebcba

    SHA1

    d1d0e1ea2d72cc73a2d917c3d48ea39e1e257f4b

    SHA256

    028e0a9386c5643e5b9c09ea246f8edc2116efd7f7656094cad679d6c779442f

    SHA512

    42a0c374531dd2f154d1e8522059f7c2249953d5e834a67f73390903de8a75b2e558918c101c60dbb2df4a579dec83b837254b4f708063ab7af16a2b4c128abb

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2992-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2992-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2992-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2992-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2992-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4596-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4596-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4596-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB