Analysis

  • max time kernel
    113s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    19-11-2024 22:25

General

  • Target

    b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.exe

  • Size

    702KB

  • MD5

    31218c782b3837e4efd3ef3ab7e932e0

  • SHA1

    1ee215fb9b409f4d10fba323706a4c9c13822fa2

  • SHA256

    b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356dd

  • SHA512

    4023320de0c40ebe908b8f176bf8184ecd847d99536acd09d348ce1d2cb64c0431567a70404775012a61c6f9b501ee6f08c43622d9beee42962fd6d3400e5efe

  • SSDEEP

    6144:k9OkMoPOqNjsusisP5N1akMoPOqNjsusisPpBnV4M:sz5Kz5gn

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 2 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.exe
    "C:\Users\Admin\AppData\Local\Temp\b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.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:2024
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2532
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2532 -s 532
        3⤵
          PID:2416

    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

    • C:\Users\Admin\AppData\Local\Temp\3582-490\b670974df7d56d22038c00af4f5f19b2062fa6a6fe24e339f05a8dec8eb356ddN.exe

      Filesize

      661KB

      MD5

      f1f54763cef3e3d3b9f19c33afa58206

      SHA1

      5318444443792b1e4739e95c7c30b273a1951322

      SHA256

      381b2eb941965870148e11fc4898fafefc0d62e2093a7538ae6fd440798cb16b

      SHA512

      c2755fadf49ee09167b570d9fc22897867177645475d45964a5c4892feabcf93f95e0cfa6be42bb1b1367b82878c41fcc1cd9bd2594fb6c3f7bf5f91438231bc

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

      Filesize

      252KB

      MD5

      9e2b9928c89a9d0da1d3e8f4bd96afa7

      SHA1

      ec66cda99f44b62470c6930e5afda061579cde35

      SHA256

      8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

      SHA512

      2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

    • memory/2024-85-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2024-86-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2024-87-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2024-89-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2532-12-0x00000000001B0000-0x0000000000258000-memory.dmp

      Filesize

      672KB

    • memory/2532-11-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

      Filesize

      4KB