Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 23:51

General

  • Target

    657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe

  • Size

    85KB

  • MD5

    8300620f310c381e602038318cd14f37

  • SHA1

    e857a86f8ba8d6db8bbbad286bd126622f36eeb3

  • SHA256

    657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a

  • SHA512

    129436555640d31ce3e344e2506d8d0a2ae4e286fb2cb932c81a42c85860e315558d6a4d860f25d539d4785ba632e7aba8ec3a86872c5e5d7857ba9e449278a1

  • SSDEEP

    1536:JxqjQ+P04wsmJCsitUBWJOuT132rKE7UFWy31aV8gE8g7UFWy:sr85CsSwuZ8a1r2g

Malware Config

Signatures

  • Detect Neshta payload 4 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 7 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\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe
    "C:\Users\Admin\AppData\Local\Temp\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.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:1700
    • C:\Users\Admin\AppData\Local\Temp\3582-490\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2740 -s 548
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2600

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

  • \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\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe

    Filesize

    44KB

    MD5

    f39e61d71bf1276505f323518a1f06ce

    SHA1

    dc1fd21d3e05e03f0a1dfe509792ac7c7928c321

    SHA256

    9ee828f64e67ec2fcb750bfaf271a74cf062c6bae7494d9cec79e9e3ed17d91b

    SHA512

    322d65ef9dd4d2a023f87a325791f19fd791abb38b4b8e20c4f25c49855d27c4fe68cab835129398d1eeff2def13a9372fcf1033595794ecd0230fbb1fe907b0

  • memory/1700-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1700-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1700-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-12-0x000000007408E000-0x000000007408F000-memory.dmp

    Filesize

    4KB

  • memory/2740-13-0x00000000008D0000-0x00000000008E2000-memory.dmp

    Filesize

    72KB