Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2024, 20:37

General

  • Target

    bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe

  • Size

    659KB

  • MD5

    ab8a662f79dc7c506f78d9fffbb07cb0

  • SHA1

    07ed591ddc463cc8c2bb89cb8175274ba82cd8f0

  • SHA256

    bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87c

  • SHA512

    9c168be8e0e63d78d3daff34d5e2f2b217a6c5aa563f4f503bcc2b437e0f0a0448edb7bbed814d9f0617632f0f2027c48c724d83ec608bd2189d58186ed8c68e

  • SSDEEP

    12288:VmgqnIZuYfCYqFet4CovkM7VyynE0zxH03pyaWmjwTXjKzVW:VWnIZuMCxezot7AGpZQ9872RW

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe
    "C:\Users\Admin\AppData\Local\Temp\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Users\Admin\AppData\Local\Temp\3582-490\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:804
      • C:\Windows\Temp\{B189E067-DA2B-43A8-BB96-22B4A75BC18B}\.cr\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe
        "C:\Windows\Temp\{B189E067-DA2B-43A8-BB96-22B4A75BC18B}\.cr\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe" -burn.filehandle.attached=288 -burn.filehandle.self=292
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2320

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

          Filesize

          547KB

          MD5

          cf6c595d3e5e9667667af096762fd9c4

          SHA1

          9bb44da8d7f6457099cb56e4f7d1026963dce7ce

          SHA256

          593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

          SHA512

          ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

        • C:\Windows\Temp\{4DA9B142-933D-4F6A-AA22-0787E21B7810}\.ba\logo.png

          Filesize

          12KB

          MD5

          84709eb22e4b05688067699ca9b0d322

          SHA1

          7c3381d8b6a58087cda95577cc2d25e7aa2c21d8

          SHA256

          c8e23a42e04fbd73f5f66f3b9f2ba34a777bc4769c413a0f78335a4e757baad5

          SHA512

          04de70b7317ee1cbde73ac0fe84bd70983cf0ff7e769e5f9626c69eaa6e3e9724c95b14ccb7a5478ee639848d3f8c98e4dec599cc5e33ad71de638da589ba319

        • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

          Filesize

          252KB

          MD5

          9e2b9928c89a9d0da1d3e8f4bd96afa7

          SHA1

          ec66cda99f44b62470c6930e5afda061579cde35

          SHA256

          8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

          SHA512

          2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

        • \Users\Admin\AppData\Local\Temp\3582-490\bf656afc0543356c4ca202cf7f4f6518b7e646b70e35b95b57d529976971b87cN.exe

          Filesize

          618KB

          MD5

          1f472cf10cbc3a5a849c4d4f18115b96

          SHA1

          a5020688a3a33dbde0b494e592f30de7d2d4eb43

          SHA256

          4b281ea9766b9d17e2ea43736797d4e3d4da4d102bbd9b11cf27167f0f65a26c

          SHA512

          410e550d593b3cbec9f2276d539958c86d2e31ef8132dd34a522b41e5ef7bbed40fc18fdb361fa9d40645cd0419a8fed6581936384df15185b3b7ad595374634

        • \Windows\Temp\{4DA9B142-933D-4F6A-AA22-0787E21B7810}\.ba\wixstdba.dll

          Filesize

          215KB

          MD5

          f68f43f809840328f4e993a54b0d5e62

          SHA1

          01da48ce6c81df4835b4c2eca7e1d447be893d39

          SHA256

          e921f69b9fb4b5ad4691809d06896c5f1d655ab75e0ce94a372319c243c56d4e

          SHA512

          a7a799ecf1784fb5e8cd7191bf78b510ff5b07db07363388d7b32ed21f4fddc09e34d1160113395f728c0f4e57d13768a0350dbdb207d9224337d2153dc791e1

        • memory/1884-119-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/1884-121-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB