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
    26-12-2024 13:43

General

  • Target

    55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe

  • Size

    669KB

  • MD5

    f5fc56030f11830ef501772cf4746050

  • SHA1

    4ca94696dfdbd766c66d44216e91350174ba82aa

  • SHA256

    55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3

  • SHA512

    39dbfb40730adbb5951ba88db229ef27286a8b119981ca5436337cb3dbb696703dfc8b46f23a1a5551f3ef0b7dd6c39e5cbdee1a1e974299e9a7716558b93dca

  • SSDEEP

    12288:VmgqnIZuYfCYqFet4CovkM7eoHnEeDawvVUdX9GkrjdnW:VWnIZuMCxezot75HZhvVwXr1W

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\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
    "C:\Users\Admin\AppData\Local\Temp\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.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:2980
    • C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Windows\Temp\{41AE3D8D-B202-45FA-A742-646978D93C91}\.cr\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
        "C:\Windows\Temp\{41AE3D8D-B202-45FA-A742-646978D93C91}\.cr\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe" -burn.filehandle.attached=288 -burn.filehandle.self=292
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2660

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:\Windows\Temp\{C72385B1-66FF-41DD-B41F-58DF7C4B3358}\.ba\logo.png

    Filesize

    12KB

    MD5

    84709eb22e4b05688067699ca9b0d322

    SHA1

    7c3381d8b6a58087cda95577cc2d25e7aa2c21d8

    SHA256

    c8e23a42e04fbd73f5f66f3b9f2ba34a777bc4769c413a0f78335a4e757baad5

    SHA512

    04de70b7317ee1cbde73ac0fe84bd70983cf0ff7e769e5f9626c69eaa6e3e9724c95b14ccb7a5478ee639848d3f8c98e4dec599cc5e33ad71de638da589ba319

  • \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\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe

    Filesize

    628KB

    MD5

    4d4f243864130822f53239481727f215

    SHA1

    f3a065eb35437246b72a7c95726efcdfd49c4265

    SHA256

    14d356216ef6ae99043481c65c461a53b492c55eb23ef6b82ac8c961a68f0974

    SHA512

    71e31ad054c99bdfa87585ad141b05f3d967ec9241658fbfc8a69ed6645d049b154f871162d1a397f853d30d6def6a7f65ab69e096a8e976c259a21871e325b6

  • \Windows\Temp\{C72385B1-66FF-41DD-B41F-58DF7C4B3358}\.ba\wixstdba.dll

    Filesize

    215KB

    MD5

    f68f43f809840328f4e993a54b0d5e62

    SHA1

    01da48ce6c81df4835b4c2eca7e1d447be893d39

    SHA256

    e921f69b9fb4b5ad4691809d06896c5f1d655ab75e0ce94a372319c243c56d4e

    SHA512

    a7a799ecf1784fb5e8cd7191bf78b510ff5b07db07363388d7b32ed21f4fddc09e34d1160113395f728c0f4e57d13768a0350dbdb207d9224337d2153dc791e1

  • memory/2980-133-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2980-135-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB