Analysis

  • max time kernel
    137s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2023 23:07

General

  • Target

    NEAS.2023-09-09_0f095f2a3cb1daf0bb25a949e062987f_cryptolocker_JC.exe

  • Size

    85KB

  • MD5

    0f095f2a3cb1daf0bb25a949e062987f

  • SHA1

    a5f26f558f8d35f686a30b7b030a67b27700f119

  • SHA256

    95fbe88a1daee27730c252ba09612d446b376c0d9f0c81bd27f9d9380f346cc8

  • SHA512

    c0de81b20839bae2b9c6e4a64dba8ff6721f58d7c8d849975e4259181f8754a53929c31ccc606af0221c68a198cddc203346f10cde7a5c0f2c967529c2f25e4d

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQv:vCjsIOtEvwDpj5H8zPsB

Score
7/10

Malware Config

Signatures

  • 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\NEAS.2023-09-09_0f095f2a3cb1daf0bb25a949e062987f_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-09_0f095f2a3cb1daf0bb25a949e062987f_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2040
    • 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:2504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    85KB

    MD5

    157b5b5ceb94257ff6234a70cdb09f31

    SHA1

    7f5c890646239c0eadfff9623ee8109a3091c9b2

    SHA256

    d70a6c5072630929fe7c62a6a4c4d20244403ccffa4a76a18281a7e0bd3737c7

    SHA512

    267590a1c74a4bacb9e10de971056d5e5f65ec08e1ddd99c1e38f4e4b8e72724ffd2b9b74cbf56a9f642feecbd51b1eaf8581adb1310e4fd7a8ed595443afdc8

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

    Filesize

    85KB

    MD5

    157b5b5ceb94257ff6234a70cdb09f31

    SHA1

    7f5c890646239c0eadfff9623ee8109a3091c9b2

    SHA256

    d70a6c5072630929fe7c62a6a4c4d20244403ccffa4a76a18281a7e0bd3737c7

    SHA512

    267590a1c74a4bacb9e10de971056d5e5f65ec08e1ddd99c1e38f4e4b8e72724ffd2b9b74cbf56a9f642feecbd51b1eaf8581adb1310e4fd7a8ed595443afdc8

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

    Filesize

    85KB

    MD5

    157b5b5ceb94257ff6234a70cdb09f31

    SHA1

    7f5c890646239c0eadfff9623ee8109a3091c9b2

    SHA256

    d70a6c5072630929fe7c62a6a4c4d20244403ccffa4a76a18281a7e0bd3737c7

    SHA512

    267590a1c74a4bacb9e10de971056d5e5f65ec08e1ddd99c1e38f4e4b8e72724ffd2b9b74cbf56a9f642feecbd51b1eaf8581adb1310e4fd7a8ed595443afdc8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2040-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2040-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2040-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2504-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2504-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB