Analysis

  • max time kernel
    37s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    02-11-2024 20:27

General

  • Target

    1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.exe

  • Size

    729KB

  • MD5

    d710a738d8142ebc82139dcf470f9a6d

  • SHA1

    a97025796412b19e65e6d6bead9ba2a9479eb8cf

  • SHA256

    1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea

  • SHA512

    0864728af5d37ee1ccbcff346ba57834ddce10c657e621c714512edf37af837e3fbd878b83c9f4f656b91b6948802d85689e0c73acbac708f3f34c68f4d5b1cd

  • SSDEEP

    6144:k9u9Jy/p5DLIc6y/p59prxTRtuEZIVavADb50rj50rV:rJyHIVyH9/UavADNeW

Malware Config

Signatures

  • Detect Neshta payload 5 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 1 IoCs
  • Loads dropped DLL 10 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).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.exe
    "C:\Users\Admin\AppData\Local\Temp\1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.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:2304
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 148
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \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\1fab8ef78f265b38f06cc73b7a37585f20b6eb5c6c51e05501c1e1bace5e44ea.exe

    Filesize

    688KB

    MD5

    f0df449b0a9af6ca68669e4a1d54dc8e

    SHA1

    a6234fb3fb895b851671075b705ea6bd2b8f4119

    SHA256

    4c9551c7498bbfc3eb3946a9c8f38ce433984203ab131ad2c25fe9ed449e1b99

    SHA512

    d953b9970aea6b917c541ffadcc08f749a7805a3bf090c2ad9757a998cad333d42e8c046df98659b07d32384b0bf646f91377384fe3bd519b91ad7b3909d0a69

  • memory/2304-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2304-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2304-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2304-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB