Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-08-2023 16:34

General

  • Target

    5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe

  • Size

    88KB

  • MD5

    5f76be883c51cff5af0007adb45ebd19

  • SHA1

    ae8310a69ad58eb89ad5c7d98a5467d810616d8c

  • SHA256

    42c8d816ea420f8e22b8a422a2b6a72075f7111f7ae6035f24d2e939a155854e

  • SHA512

    7512d0866602be1cc7bea0b74c78c0ff1f3691f0a66398a4a96852f73dc1360a04b3e151d5f45f9e420de80b2a9bc1f54e2a6137782d55055ad8d1416b86e17b

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDWo:zCsanOtEvwDpjM

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\5f76be883c51cff5af0007adb45ebd19_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    049c27f75a205b10ce9acf8c73074333

    SHA1

    fdcce36781b66501069ea215185c58e09657fd45

    SHA256

    2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

    SHA512

    3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

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

    Filesize

    88KB

    MD5

    049c27f75a205b10ce9acf8c73074333

    SHA1

    fdcce36781b66501069ea215185c58e09657fd45

    SHA256

    2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

    SHA512

    3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

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

    Filesize

    88KB

    MD5

    049c27f75a205b10ce9acf8c73074333

    SHA1

    fdcce36781b66501069ea215185c58e09657fd45

    SHA256

    2dd995ce69662afa46d408ad800ffcc63cf82184595684711c8d19b648ee739b

    SHA512

    3fc08f8cf237c409f9cc461bc709cf5d795339a2c20a012b1a6de629cc1ffea280e4c193c76a0bd9788af608a7dddd1a075a3c7e56bc3b3efa2c0013b6198519

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/736-152-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/736-180-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5064-133-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5064-134-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5064-135-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5064-136-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/5064-151-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB