Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2024 12:08

General

  • Target

    ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.exe

  • Size

    468KB

  • MD5

    c7914e46dfacefec56e0f9ac16e1f850

  • SHA1

    0538d26400c7610c5453cd284554438a5e25b1a2

  • SHA256

    ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0

  • SHA512

    e3643bd4c6cc2b187cc7a3f8e9c6f27f7082e9edf8ab20af018060c871794491d0fe9de2cec47cc6ccb365ef773d4c83f1481f143fd664c1c843e410eedd4328

  • SSDEEP

    12288:FKhsfoPA+yeVKUCUxP4C902bdRtJJPiWC6Ov5S:JfcdHj4fmbZC6q5S

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 1 IoCs
  • Loads dropped DLL 9 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.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.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:2668
    • C:\Users\Admin\AppData\Local\Temp\3582-490\ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 236
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2728

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

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\ac6905de844502d8f4fd107e25d073bf12159110cb36e316eb14eb6e21c1b9e0N.exe

    Filesize

    428KB

    MD5

    bb41888ee5f801c4516cbc026c01e332

    SHA1

    190e69cc5fa40a138f0f57f64e8072fab8c0f305

    SHA256

    d716f5abbe72926a42a3e23c946ea93f48ddc718e980b690f61f83244e15d3bd

    SHA512

    4a7975355bcecb3b219929822caa8d8c712c8e5749bcf373216b218e5c64fc5e95e478a21805b40067f1dbacf6752e3f3ac2c685f15760a94d316d6f5f3995f1

  • memory/2668-8-0x0000000002DA0000-0x0000000002EA7000-memory.dmp

    Filesize

    1.0MB

  • memory/2668-93-0x0000000002DA0000-0x0000000002EA7000-memory.dmp

    Filesize

    1.0MB

  • memory/2668-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2668-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2704-12-0x00000000000E0000-0x00000000001E7000-memory.dmp

    Filesize

    1.0MB

  • memory/2704-92-0x00000000000E0000-0x00000000001E7000-memory.dmp

    Filesize

    1.0MB