Analysis

  • max time kernel
    119s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2024, 17:55

General

  • Target

    492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe

  • Size

    118KB

  • MD5

    55978849ec431982791abc8907495580

  • SHA1

    e2016fa2c6dde0ef6ab8ab5ca153195047cccd0a

  • SHA256

    492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016e

  • SHA512

    c1f71b6713a1115f172120f12b8c79a2471efc12aff2031be3178ba0d9a71a8bdc5107f0c27ebd8842856b130ed1452ec49fc0fdaefeb6582a08ed394d6b6d07

  • SSDEEP

    1536:JxqjQ+P04wsmJCQIEZ+qi9URcLJYetKkHhaFlS/ktO2wwkfBlNrKnJAy5WZBIFX:sr85CYZLS95tKkHhaFlS/VtprQXFX

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 3 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.

  • 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 5 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 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe
    "C:\Users\Admin\AppData\Local\Temp\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.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:2756
    • C:\Users\Admin\AppData\Local\Temp\3582-490\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2824
      • C:\Users\Admin\AppData\Local\Temp\nst46A1.tmp\nst46C1.tmp
        nst46C1.tmp /DOIT
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\AppData\Local\Temp\nst46A1.tmp\A~NSISu_.tmp
          "C:\Users\Admin\AppData\Local\Temp\nst46A1.tmp\A~NSISu_.tmp" /DOIT _=C:\Users\Admin\AppData\Local\Temp\nst46A1.tmp
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2772
          • C:\Windows\SysWOW64\CMD.EXE
            CMD.EXE /C "C:\Users\Admin\AppData\Local\Temp\nst7ABB.bat"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2948

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        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\nst7ABB.bat

          Filesize

          277B

          MD5

          fba27f833cedc2d4fae2131dfb100fce

          SHA1

          abea8d47034e858f7b31bc6084bf034def1af9ee

          SHA256

          30984eac7cbc933e4490364d223b5e76d337494f08e2ad164da5dadbb3eae131

          SHA512

          019eb5b08fe079e397e911bfc2d81476c350241e78ea3fb58d691497e75f408a0968631978a59cc66a1f48c792b19e5a97293d83964a5827cad3a7710429658e

        • \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\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe

          Filesize

          78KB

          MD5

          b1812d2c16d9adddf4642ace51f3e06a

          SHA1

          a2ca3277fa890ffee4d9294441d5e052e30ab2e8

          SHA256

          eab8921ebe73c16aa8534185cf5793bf47350591549c5d84d57e2e0f716c0911

          SHA512

          3c1a3877d75e58f96aea3107b576dfd01204f2fb3f3fd346df387a146a7a75e2439c2a65e9f66ffa94b8a42d2540abc2a6de6717a067c2cf9ac2dc6e30cb7038

        • memory/2756-96-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/2756-100-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB