Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 3 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 2 IoCs
  • Loads dropped DLL 4 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.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:2936
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2200
      • C:\Windows\Temp\{D47261DB-E165-469C-B12A-D24D3DC65562}\.cr\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe
        "C:\Windows\Temp\{D47261DB-E165-469C-B12A-D24D3DC65562}\.cr\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe" -burn.filehandle.attached=180 -burn.filehandle.self=188
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2908

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\a209bb56a4d9f69f857caac9c32d4d740c6ff47f14f88357e2d9fd885d06f8e0N.exe

    Filesize

    610KB

    MD5

    ce20facaabc1cbcff29fade8fba35dd3

    SHA1

    695cacc0047890270a758a8fb97ed57a1938c2a5

    SHA256

    11cbd1350c100b4b8d819f6ed6123c55be432c036fdd85607c3657d4f75109f2

    SHA512

    e621f7f1bb5cc8f3e0d85b66fec9818309840f6e42e615e2abb8e522925ab2a475d29f6a3f369a27f7199fda72dc37b3f3b1a16df09e4dec7aba2bc49c5a642e

  • C:\Windows\Temp\{79778830-9241-4E21-AB0C-E92305B280C0}\.ba\bg.png

    Filesize

    4KB

    MD5

    9eb0320dfbf2bd541e6a55c01ddc9f20

    SHA1

    eb282a66d29594346531b1ff886d455e1dcd6d99

    SHA256

    9095bf7b6baa0107b40a4a6d727215be077133a190f4ca9bd89a176842141e79

    SHA512

    9ada3a1757a493fbb004bd767fab8f77430af69d71479f340b8b8ede904cc94cd733700db593a4a2d2e1184c0081fd0648318d867128e1cb461021314990931d

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Windows\Temp\{79778830-9241-4E21-AB0C-E92305B280C0}\.ba\wixstdba.dll

    Filesize

    197KB

    MD5

    4356ee50f0b1a878e270614780ddf095

    SHA1

    b5c0915f023b2e4ed3e122322abc40c4437909af

    SHA256

    41a8787fdc9467f563438daba4131191aa1eb588a81beb9a89fe8bd886c16104

    SHA512

    b9e482efe9189683dabfc9feff8b386d7eba4ecf070f42a1eebee6052cfb181a19497f831f1ea6429cfcce1d4865a5d279b24bd738d702902e9887bb9f0c4691

  • memory/2936-144-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2936-167-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB