Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 04:03

General

  • Target

    3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe

  • Size

    285KB

  • MD5

    25e1b91a94bcb17438a3a12b8a45a750

  • SHA1

    7a5767f1b42a419660160634de72f34cba5f9768

  • SHA256

    3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbd

  • SHA512

    76381b5656640600bfbd8745cb0b86b921871586d6892bd43a1af94d48cfb6dcedc1675f040c70a0c4fe840e8ebe34a7d837dbd27767f9ff5a4d18ed1c6a72d0

  • SSDEEP

    6144:l9w5oT6FBfHUGwf+AyJLDmb39TBijHwQgKt5TGG:Y5oT6FBfHhw2AyM9ToHPXPyG

Malware Config

Signatures

  • Neshta

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

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 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.

  • 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 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe
    "C:\Users\Admin\AppData\Local\Temp\3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe"
    1⤵
    • Checks computer location settings
    • 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:1736
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe"
      2⤵
      • Executes dropped EXE
      PID:4504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    568424d95b90ad4bebfd89e57c086fff

    SHA1

    c9d9bc1ac626ebdfa20fd9d75203242edff26e09

    SHA256

    c6619e71a161e7d30201c8b7f66075ce8cada6b7219b56e5b9fd988a38b2bc4d

    SHA512

    4d40f170030efae3b1f7e85b926462dc3fd86688ce757e843fcec52c720489f160503eb446a777d494403a0e3607f5ef9c7b6a66c6d2e6ced2b4ba10138c151b

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3687819aeb88e787233ac2f3db207305f74c2a68f5ee972efe0f76caefd6bfbdN.exe

    Filesize

    245KB

    MD5

    273d28618f6f7a082978e216e21d3107

    SHA1

    f16de87e8029ced527388d66eed772fcae50553b

    SHA256

    64c8c60a35d99cd197d3e94ee363ebbb5cb1d698327ffb52379749b992674989

    SHA512

    cc17ea76c533414afe851a5fc0bbafbaaae943081c10d7a574cb6f367d506e412d83fbd3dc0a37ea7ad317f103f29facdc43fce233f3f09633be59486ab6ac50

  • memory/1736-92-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/1736-93-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/1736-95-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB