Analysis

  • max time kernel
    92s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-05-2022 00:38

General

  • Target

    8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe

  • Size

    939KB

  • MD5

    929d48fea54e7ef512c288efb3904116

  • SHA1

    29d4565e8f5901dd8dd489f8c422e72a9969d832

  • SHA256

    8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f

  • SHA512

    331dc004942e96c6afb0803d9cc1ffdcce0bdb6b70fd3ef484537b1e4775dcbc590327cf480e08b0c3ebb5457bff0b997ae5a6371b845bde7a9a93c5a20ac6fa

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

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

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 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). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe
    "C:\Users\Admin\AppData\Local\Temp\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4624
    • C:\Users\Admin\AppData\Local\Temp\3582-490\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe"
      2⤵
      • Executes dropped EXE
      PID:2152
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2152 -s 844
        3⤵
        • Program crash
        PID:3104
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 396 -p 2152 -ip 2152
    1⤵
      PID:4680

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe

      Filesize

      899KB

      MD5

      5b74993c433cb811c591a1b2a8155b31

      SHA1

      b06deafe52ed08047025a5d8aa375545bf7e4078

      SHA256

      cef89a16a209e852dc11074589a8680d6cd59812cad1c3e2e42cba75e5109d21

      SHA512

      5ffc5c64a85498e7dd3866131a37fdff816ae1fc0806b666799fef70d6aa16da8bd82a95045a7b1d514de49a01d580813324af971e1379aa6d2946589a9d5ea4

    • C:\Users\Admin\AppData\Local\Temp\3582-490\8e5bdb1635285b45d05487588ab7c8a345ce6680917fb11202afa5b2f227459f.exe

      Filesize

      899KB

      MD5

      5b74993c433cb811c591a1b2a8155b31

      SHA1

      b06deafe52ed08047025a5d8aa375545bf7e4078

      SHA256

      cef89a16a209e852dc11074589a8680d6cd59812cad1c3e2e42cba75e5109d21

      SHA512

      5ffc5c64a85498e7dd3866131a37fdff816ae1fc0806b666799fef70d6aa16da8bd82a95045a7b1d514de49a01d580813324af971e1379aa6d2946589a9d5ea4

    • memory/2152-130-0x0000000000000000-mapping.dmp

    • memory/2152-133-0x000001B5534B0000-0x000001B55359A000-memory.dmp

      Filesize

      936KB

    • memory/2152-134-0x00007FFB09C60000-0x00007FFB0A721000-memory.dmp

      Filesize

      10.8MB