Analysis

  • max time kernel
    144s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/07/2023, 13:27

General

  • Target

    4c21b999351f2bexeexe_JC.exe

  • Size

    65KB

  • MD5

    4c21b999351f2b700e3f13b266a750c1

  • SHA1

    9f6291c24facd795d53d9e5ea1208cb9dad2018d

  • SHA256

    439de19bcec9e5837f01690a735634bf529f6081835fa20ad05fd4388d025e46

  • SHA512

    8efa12768483219bb2757b945a1dc3fca1d88d65262ab72a111a8638b36ffe0a7cbc153740f13810233b5b621cb994c785cf6d2a7556ba2262cd29a7fbaf7b98

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ36n9FQiOr:ZVxkGOtEvwDpjcaAt6

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\4c21b999351f2bexeexe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\4c21b999351f2bexeexe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3392
    • 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:4528

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    f2625bff2e1e3913866ee1e06aad359b

    SHA1

    0d3b2bf0e40794825ec044dc7468d825508737c7

    SHA256

    e71ccb5c0d5eec4544952c3730015c516e5c5d49944e956938d601311686807d

    SHA512

    bc1d478da8092a94b6afb36b00aadea7f5d331f3d9fafb5aa568b0ac4895036fb613f5f2c48ab270fb35be52b7ca8c765e71e8276eba76b98abdf080b9a63327

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

    Filesize

    65KB

    MD5

    f2625bff2e1e3913866ee1e06aad359b

    SHA1

    0d3b2bf0e40794825ec044dc7468d825508737c7

    SHA256

    e71ccb5c0d5eec4544952c3730015c516e5c5d49944e956938d601311686807d

    SHA512

    bc1d478da8092a94b6afb36b00aadea7f5d331f3d9fafb5aa568b0ac4895036fb613f5f2c48ab270fb35be52b7ca8c765e71e8276eba76b98abdf080b9a63327

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

    Filesize

    65KB

    MD5

    f2625bff2e1e3913866ee1e06aad359b

    SHA1

    0d3b2bf0e40794825ec044dc7468d825508737c7

    SHA256

    e71ccb5c0d5eec4544952c3730015c516e5c5d49944e956938d601311686807d

    SHA512

    bc1d478da8092a94b6afb36b00aadea7f5d331f3d9fafb5aa568b0ac4895036fb613f5f2c48ab270fb35be52b7ca8c765e71e8276eba76b98abdf080b9a63327

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3392-136-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/3392-133-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/3392-135-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3392-151-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/3392-153-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3392-134-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4528-150-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/4528-155-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4528-154-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4528-183-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB