Analysis

  • max time kernel
    141s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-04-2024 20:57

General

  • Target

    2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe

  • Size

    65KB

  • MD5

    c29a7912dd5b408fc36e9465ca052507

  • SHA1

    d35ccf2985408ca7e3e8b469ea9ad166d36c7b94

  • SHA256

    93d37334135ea55c398b895731ae0f743ec5515c3fab59cffc76d98b73de5f94

  • SHA512

    30e2f6d9e0fd87fd403c9f1d0e5242c4c473495cd940648c214298fdd8ccace023a1111c34003f4b8dae85ecfb9a7f650fa6bbb85779c9b07b5bb3ecb1ae2a25

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5k5Bj:zj+soPSMOtEvwDpj4kpmeLmQ/j

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_c29a7912dd5b408fc36e9465ca052507_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    1ccdc14b7f6a7f6c709626c867640e46

    SHA1

    635e05609139ad3d10bb9c2927bc92aec2d51fd1

    SHA256

    ed60dd59f084c88941c2909309b35e728c2986feafc11f5cb15fbca645726753

    SHA512

    f06198e6f79a661b2e43342a3a246c60000e8ffa6005898249c11e24e70a495433ea84654075ff3fb35a4bd569beb80045de6a230060ee75b865586980db4fd6

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1268-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1268-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1268-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1268-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1620-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1620-1-0x0000000002320000-0x0000000002326000-memory.dmp

    Filesize

    24KB

  • memory/1620-2-0x0000000002320000-0x0000000002326000-memory.dmp

    Filesize

    24KB

  • memory/1620-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/1620-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB