Analysis

  • max time kernel
    116s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21/11/2024, 17:29

General

  • Target

    337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.exe

  • Size

    114KB

  • MD5

    ab2ad2f7fbde3f24bb098669d404b8c0

  • SHA1

    2273fe1e00e2d36738a25cdb16257079a302520a

  • SHA256

    337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6fe

  • SHA512

    1dee57fd9839c8d967126effb83c7204cad4d63f56597c62b29582fde923b09bc33f9c1a051a2e8bc59be12a78d873bdc2873984268b90d4f3cd7350293637e6

  • SSDEEP

    1536:JxqjQ+P04wsmJC9NQ+LPOWx4d3gSZg3+kSmYSQ2PkwW:sr85C9G+LPOCQ3g+gukSLSQITW

Malware Config

Signatures

  • Detect Neshta payload 5 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 2 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 1 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.exe
    "C:\Users\Admin\AppData\Local\Temp\337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.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:1840
    • C:\Users\Admin\AppData\Local\Temp\3582-490\337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2536 -s 520
        3⤵
          PID:2364

    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

    • \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\337296f92ee4ff8fe8b826bb7fba5ff30c6f5eae7f13f050e6058ce65989f6feN.exe

      Filesize

      73KB

      MD5

      dd9c3dc29b84f37e93a90914e5e97e53

      SHA1

      0b0431845875bbaf56612058378d9c293666b639

      SHA256

      98258b4a11d2c56b17e02d741485775d6ff940c303463b3d0217a2c2ec5b8973

      SHA512

      a2acab152fb541cad98b666951be538b388a61580ecb101b91b4e0c6c9f45e3f3b0133d63e12c763740055bf9ffadfa102adc21afceabb3a8710e6dd1610170a

    • memory/1840-85-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1840-86-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1840-87-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1840-89-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2536-11-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

      Filesize

      4KB

    • memory/2536-12-0x00000000001A0000-0x00000000001B8000-memory.dmp

      Filesize

      96KB