Analysis

  • max time kernel
    5s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    23-05-2022 23:45

General

  • Target

    4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

  • Size

    675KB

  • MD5

    d81905e927e4a65ee7bad34cacca9e4b

  • SHA1

    13efe6ca3fddfd405a019b44a4450ac7c5f26855

  • SHA256

    4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975

  • SHA512

    209cc50e03e44f64dc922042308325bc1dd54b4ccc573bc749da091d9e61f9211e60a4042cec0fc2a4dc58e189b2aa61261ff5614a01b8ff85781eb200e05981

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
  • Loads dropped DLL 7 IoCs
  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
    "C:\Users\Admin\AppData\Local\Temp\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 632
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2024

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \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\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • \Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

    Filesize

    635KB

    MD5

    393973f9be63591a8c6c6dee5772766b

    SHA1

    36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

    SHA256

    39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

    SHA512

    dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

  • memory/1964-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

    Filesize

    8KB

  • memory/2024-61-0x0000000000000000-mapping.dmp

  • memory/2040-56-0x0000000000000000-mapping.dmp

  • memory/2040-59-0x0000000000850000-0x00000000008F6000-memory.dmp

    Filesize

    664KB