Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 21:57

General

  • Target

    3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe

  • Size

    400KB

  • MD5

    e802b64b73bba7cccde8881de7e07a86

  • SHA1

    23fa20d49e4fd57f95195b1c15c5d66e867212e2

  • SHA256

    3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203

  • SHA512

    37a696077c5ca4c119b24f10e32d5f0d41b12d4ee313babd56050a68104e409f3ada83ad5c10a35fd91a295d62f4d410df2ff34ada6c036a6526acd02e977a8e

  • SSDEEP

    3072:sr85Ct/VSrY7KwIoaCi5Z08laASQS5XfMXaZoT+IaKFfa+Hgl8NLyrzcjhMr85C:k94qNA/S5kqGT+dj+Hg0LyrzcjK9

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 10 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.

  • 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\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe
    "C:\Users\Admin\AppData\Local\Temp\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.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:1884
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 148
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2792

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\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe

    Filesize

    360KB

    MD5

    d312ef88771314133933d9b53b076c67

    SHA1

    b7ffd961330991392ad653efcf1737bf01d09f6e

    SHA256

    1e3998abe5cb7480304787d5cf6d13877f9b43c928c3ff5248ff2974a83a1a90

    SHA512

    74d3189cd12f39852833df85713bdb0c5d647340d331bc40324f380a04bdbb272304e39d0b9759a83742468a800936108610e1f318d83c44c3d6d262e4419aab

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/1884-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1884-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB