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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/07/2023, 12:42

General

  • Target

    e3bb7878f1fa5dexe_JC.exe

  • Size

    100KB

  • MD5

    e3bb7878f1fa5d523cb3bf7236646973

  • SHA1

    f3a5fdb6a608822419b9d8f858c9ae81d7048911

  • SHA256

    be25a5e6560c285f795b753a8cbfd0b90c4d543068bb153dc77001bb792b0bc9

  • SHA512

    fef715b831bef4b37b967785919850e4a549143037519b49c346f065cb9849ce77eef65cca573b8ccb68dfb42274af132748fd0fd1374889c1c7b5726bfd10c1

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GCp:1nK6a+qdOOtEvwDpjI

Score
7/10
upx

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e3bb7878f1fa5dexe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\e3bb7878f1fa5dexe_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4940
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3780

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    c2a06632ffa10003619f43d31b6f1da1

    SHA1

    f83654d88eb679a03ed504178ccd07e8ed6dd092

    SHA256

    9b7e4f2b3cb9f1ddeafe83815ff8b93750c415dca6d079053106386447913510

    SHA512

    51eb70673cef270e96e174ad710ffea2b4b731232147faa05b5fa2c9ee934f9402097a465a78ab21d1fbea146e982c02e5d0b0e35a55cc568e5e5307e6571e42

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

    Filesize

    100KB

    MD5

    c2a06632ffa10003619f43d31b6f1da1

    SHA1

    f83654d88eb679a03ed504178ccd07e8ed6dd092

    SHA256

    9b7e4f2b3cb9f1ddeafe83815ff8b93750c415dca6d079053106386447913510

    SHA512

    51eb70673cef270e96e174ad710ffea2b4b731232147faa05b5fa2c9ee934f9402097a465a78ab21d1fbea146e982c02e5d0b0e35a55cc568e5e5307e6571e42

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

    Filesize

    100KB

    MD5

    c2a06632ffa10003619f43d31b6f1da1

    SHA1

    f83654d88eb679a03ed504178ccd07e8ed6dd092

    SHA256

    9b7e4f2b3cb9f1ddeafe83815ff8b93750c415dca6d079053106386447913510

    SHA512

    51eb70673cef270e96e174ad710ffea2b4b731232147faa05b5fa2c9ee934f9402097a465a78ab21d1fbea146e982c02e5d0b0e35a55cc568e5e5307e6571e42

  • memory/3780-151-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3780-153-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/3780-159-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4940-133-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4940-134-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4940-135-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4940-136-0x0000000000710000-0x0000000000716000-memory.dmp

    Filesize

    24KB

  • memory/4940-152-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB