Analysis

  • max time kernel
    94s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-11-2024 22:14

General

  • Target

    a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe

  • Size

    651KB

  • MD5

    5393a0a8baac480b95b114e123c97340

  • SHA1

    1d5ba46feb504190a82ead1fc587806383956c21

  • SHA256

    a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0

  • SHA512

    7937053b17963c4996868772373c97d4f5c760fdf13bcc237649716d608ec7cfd82406575285bf0a4cf881a472021b742c34938738a2e9d059821e8c0270e4cb

  • SSDEEP

    12288:CWukhI2jFMSjysAS9X/GsfTDYrGiGE+BrkxGSF1OHw1JK5o:CWpI2jFM5sFzfTpi9+721055o

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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 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.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 3 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.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:916
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4676
      • C:\Windows\Temp\{02F7C296-048E-4EB1-962E-9BEF89EEAFBB}\.cr\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
        "C:\Windows\Temp\{02F7C296-048E-4EB1-962E-9BEF89EEAFBB}\.cr\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe" -burn.filehandle.attached=536 -burn.filehandle.self=532
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:512

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

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe

    Filesize

    610KB

    MD5

    ce20facaabc1cbcff29fade8fba35dd3

    SHA1

    695cacc0047890270a758a8fb97ed57a1938c2a5

    SHA256

    11cbd1350c100b4b8d819f6ed6123c55be432c036fdd85607c3657d4f75109f2

    SHA512

    e621f7f1bb5cc8f3e0d85b66fec9818309840f6e42e615e2abb8e522925ab2a475d29f6a3f369a27f7199fda72dc37b3f3b1a16df09e4dec7aba2bc49c5a642e

  • C:\Windows\Temp\{2BD03D2D-FE0D-4931-B97B-61F325244B1A}\.ba\bg.png

    Filesize

    4KB

    MD5

    9eb0320dfbf2bd541e6a55c01ddc9f20

    SHA1

    eb282a66d29594346531b1ff886d455e1dcd6d99

    SHA256

    9095bf7b6baa0107b40a4a6d727215be077133a190f4ca9bd89a176842141e79

    SHA512

    9ada3a1757a493fbb004bd767fab8f77430af69d71479f340b8b8ede904cc94cd733700db593a4a2d2e1184c0081fd0648318d867128e1cb461021314990931d

  • C:\Windows\Temp\{2BD03D2D-FE0D-4931-B97B-61F325244B1A}\.ba\wixstdba.dll

    Filesize

    197KB

    MD5

    4356ee50f0b1a878e270614780ddf095

    SHA1

    b5c0915f023b2e4ed3e122322abc40c4437909af

    SHA256

    41a8787fdc9467f563438daba4131191aa1eb588a81beb9a89fe8bd886c16104

    SHA512

    b9e482efe9189683dabfc9feff8b386d7eba4ecf070f42a1eebee6052cfb181a19497f831f1ea6429cfcce1d4865a5d279b24bd738d702902e9887bb9f0c4691

  • memory/916-153-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/916-175-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/916-176-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/916-178-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB