Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 23:23

General

  • Target

    5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.exe

  • Size

    716KB

  • MD5

    d2b170a0d54c9b04c1eed4e0ae211b31

  • SHA1

    4f92f89f2df5820541252ffd50f39aa2308a5077

  • SHA256

    5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc

  • SHA512

    3b65f1fbd620e771e756c67f22291f54edcaf0316e2871200d0f7b07834d5e79f9ec49136cc16f0a531a2239b371ac93293121afaa20172b85650672efd145bf

  • SSDEEP

    12288:F9MMMv8qMMMwRptxMMM4TdjpXc7LH5jaYb4RA6PCTMZp1QRY36LVyTruNrp2twNU:nMMMUqMMMoMMMfcYQ

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\5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.exe
    "C:\Users\Admin\AppData\Local\Temp\5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.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:2440
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 148
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2488

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\5a93e5c093bd03a45656e91caeb94649bb11d87558eb3511eb9828e72ced94cc.exe

    Filesize

    676KB

    MD5

    97b680704e414698fadce458d277724b

    SHA1

    283986b612de9b06818e746d89b410823bf66aa8

    SHA256

    c32d5c39ee23294c2c1a261b1867d4740a38517d15c6b042628eedd7f9712782

    SHA512

    3d4890e0a66129f0c5976835dbc8adf6625e1cc51cb10571f4d6fad0a2628035e9d0c6a1159518caef25f08c5102a771ce5679bd1dd5aeb5af73213d2501ccc1

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/2440-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2440-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB