Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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 21:52

General

  • Target

    2024-05-22_a4a2b057f5ad44c2464a512b13b15946_cryptolocker.exe

  • Size

    48KB

  • MD5

    a4a2b057f5ad44c2464a512b13b15946

  • SHA1

    a8cce41a9c3bb8eebc35dab4a67b1de2065814be

  • SHA256

    228e2ee54eaa60a223653a31c551157a0eade4875c61eaf06b6cb5662eb9bc04

  • SHA512

    e37a980fec0826ba101e7cfc7d1a8634c576d02415c324f03a88f704f7f5e712556ed4a65ceedcad22298e10207338835130417dedaaed426c2461858166a9a9

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nkc:vj+jsMQMOtEvwDpj5HczerLO04B0

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_a4a2b057f5ad44c2464a512b13b15946_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_a4a2b057f5ad44c2464a512b13b15946_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5016
    • 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:4496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    8defec277c9dfc312a61a4fa4f671b22

    SHA1

    07744282dd3470c2069ed8acf84fda0a9439df92

    SHA256

    bdc8d860d0c37589a2f7e24d0ae752a1329b6a9991038dfbce7870a92b09900d

    SHA512

    a3502196c0119ab62243cd242541267c3600928b9857dcfe1fcb23bb2049e6ff7bc1d25fd1283d0951402fdac965c9fb9dbc10bfffd4843ba8e7f2e5910e1536

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4496-17-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4496-23-0x00000000007C0000-0x00000000007C6000-memory.dmp

    Filesize

    24KB

  • memory/5016-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/5016-1-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/5016-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB