Analysis

  • max time kernel
    144s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 22:43

General

  • Target

    4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe

  • Size

    138KB

  • MD5

    1de2c33435a4922486d77a212c36bce0

  • SHA1

    266c55161777379be22a0086d2822b04567685d1

  • SHA256

    4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13

  • SHA512

    ff4bef746b250f00fb78f7242653ac0a9c20a3144945b78ad8c10afae28f289c85d371d1d36b23aa90a39d46275cc38fbf8af1844ad7acf94230a9454d8e5f3c

  • SSDEEP

    1536:JxqjQ+P04wsmJCNJQPDm0xK8i6f0Zn9PRVW8sW45o75IQ+P04wsmJCN:sr85CEPDmZ8tf05iW4u1Ir85C

Malware Config

Signatures

  • Detect Neshta payload 9 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe
    "C:\Users\Admin\AppData\Local\Temp\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe"
    1⤵
    • Checks computer location settings
    • 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:1920
    • C:\Users\Admin\AppData\Local\Temp\3582-490\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4792
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 448
        3⤵
        • Program crash
        PID:2384
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4792 -ip 4792
    1⤵
      PID:4008

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

      Filesize

      86KB

      MD5

      3b73078a714bf61d1c19ebc3afc0e454

      SHA1

      9abeabd74613a2f533e2244c9ee6f967188e4e7e

      SHA256

      ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

      SHA512

      75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

    • C:\Users\Admin\AppData\Local\Temp\3582-490\4f722aef1542ba88428929de153710bd1b7c250f6dc4dbc671ecb821a1a06a13.exe

      Filesize

      97KB

      MD5

      0f7115cdc71d4ac94f14b5e976ba201d

      SHA1

      e558c2d5058c8ec3f1e472ff57b14bac773364df

      SHA256

      8b4bafe731b81d8193533e525e164150742cb9b5a4e10707d7417a6cf3a82604

      SHA512

      4607c5172d1dd549c0881b69d4aa5c9da4b9ba93faa56aeb11056cb26d614c2e0dc1a7d70c8bde3317ab5595e0874f6ea583d31c90e4a3057fce21cadb7de0fd

    • memory/1920-93-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1920-94-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1920-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1920-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1920-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1920-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4792-9-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB