Analysis

  • max time kernel
    16s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2024 01:20

General

  • Target

    d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe

  • Size

    609KB

  • MD5

    a6b8b664365d8d9a626fa32a3069fb10

  • SHA1

    ac081e41b6b9ff8e430dafe801577b8bf320a789

  • SHA256

    d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1

  • SHA512

    5afe8a9f035d2d4401692d90034f68bcb9ac1feac7fbd12ed63c926f30584f0f2cee4c85d08d18f49e6b390368daa0c8a4c4d8d94bd149b716fd2591a5570d6e

  • SSDEEP

    12288:CB0JfiwSdYSui8zZH94I3H1v1Uh2fEPgpY0Cz4:CsfiTdYSuVzZH9tH1v1UYBpYd4

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\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe
    "C:\Users\Admin\AppData\Local\Temp\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.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:1820
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2272
      • C:\Windows\Temp\{D92A1957-D586-4880-A270-315AEC7DF36B}\.cr\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe
        "C:\Windows\Temp\{D92A1957-D586-4880-A270-315AEC7DF36B}\.cr\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe" -burn.filehandle.attached=180 -burn.filehandle.self=188
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2260

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\d54c3f750fa136fd9bd7f52339989e2ace9c5e693f3edef771199a43ee083fa1N.exe

    Filesize

    568KB

    MD5

    a38a85be4d453ef9b0c015693c63b340

    SHA1

    4c53d27be0d679e6f45532160c7316b8a1158bcc

    SHA256

    717ca5eb6334ab9cd42808ece456997d3243fe3cb6d987033c4c04a3b2c78b75

    SHA512

    71768bece559d52ec5ee2ab2ad2c0cef24b9b0516ed73082a3460385d5e2d7c88b48c7f17303db027cc184e4f37d3b55cfce9f64d7dbc7da5750a94c382f50b2

  • C:\Windows\Temp\{7792A931-70CF-4D9D-A411-0356A59E00B7}\.ba\logo.png

    Filesize

    2KB

    MD5

    80df19f22c1d266c06ace7c8b9831762

    SHA1

    65ce850433dbd3f220a3c1dd39736315376b5a5c

    SHA256

    e8e37845754f62b6426ce39cbda1db032856bd551e6d39bbaca06aa7c44625c4

    SHA512

    5acd8ce85a9e711036cb840b0779d8cbeea0d4822e866e7def7eec6e4ec2633dca2fa295a74392fe7a4306f84cef4277d4401364253c0f8471b13e8e9c9a6a2c

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Windows\Temp\{7792A931-70CF-4D9D-A411-0356A59E00B7}\.ba\wixstdba.dll

    Filesize

    184KB

    MD5

    fe7e0bd53f52e6630473c31299a49fdd

    SHA1

    f706f45768bfb95f4c96dfa0be36df57aa863898

    SHA256

    2bea14d70943a42d344e09b7c9de5562fa7e109946e1c615dd584da30d06cc80

    SHA512

    feed48286b1e182996a3664f0facdf42aae3692d3d938ea004350c85764db7a0bea996dfddf7a77149c0d4b8b776fb544e8b1ce5e9944086a5b1ed6a8a239a3c

  • memory/1820-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1820-107-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB