Analysis

  • max time kernel
    120s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    29/03/2025, 17:28

General

  • Target

    2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.exe

  • Size

    2.7MB

  • MD5

    bcbce10ac67b2b70303a92e98d123ee4

  • SHA1

    9214c28a404669155ac60bc8d92170774235abe9

  • SHA256

    e152291951c6ed8528ddc98ab51d8d96c03c3a72638aabe9b1c05ad1fac2ad1d

  • SHA512

    2a8d46703a72f63d452acf144475bb2c0fdb06b7294fc89c816792a6f5f68ef973ed2f44cd4168b4bd863f203ecc85ffcfd0724bbc580c6f95eb1f5fac453f9b

  • SSDEEP

    49152:NTsHigyN0MHrNNtb9vGs9eXp2snhhitWErpvtcLXQawjZ:CgGmjt+h0pvhaS

Malware Config

Signatures

  • Detect Neshta payload 8 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 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.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
    PID:1104
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.exe"
      2⤵
      • Executes dropped EXE
      PID:2108

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:\Users\Admin\AppData\Local\Temp\3582-490\2025-03-29_bcbce10ac67b2b70303a92e98d123ee4_black-basta_neshta.exe

    Filesize

    2.7MB

    MD5

    86098eff2b10ee0fec91991cd8db7295

    SHA1

    6dc72dc0a419b586440ecf2b8345004ecd598b24

    SHA256

    86c7b869e9f0d121b4a89cb3f44dfd8113acf053dca218a8ccfa81cf5d174234

    SHA512

    591aaa8f401f5142f00c53b4971245a374badd2c096fb2d482584b7c4d2231241c675f87e4cf24a5c9e14c2dfba2ef2c8b5dcd9066fc77643dfdbc22381201b4

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/1104-81-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-82-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-83-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-84-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1104-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB