Analysis

  • max time kernel
    66s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 17:42

General

  • Target

    e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe

  • Size

    139KB

  • MD5

    d9659eb9fa16a4c873a4e74610008bb7

  • SHA1

    aab0ef0b04597ef4cbb133eae99972fedbc2622d

  • SHA256

    e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80

  • SHA512

    507d3edbe5dd5d707a836511f6097d55c7249b6a7c12072c0267c71790301c4947a1539c93619d3961481180d78bcf299ccfd363944fb208b167495551acffaa

Malware Config

Signatures

  • Detect Neshta Payload 2 IoCs
  • 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 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe
    "C:\Users\Admin\AppData\Local\Temp\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.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:1972
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'vlc';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'vlc' -Value '"C:\Users\Admin\AppData\Roaming\vlc\vlc.exe"' -PropertyType 'String'
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:864
      • C:\Windows\svchost.com
        "C:\Windows\svchost.com" "C:\Users\Admin\AppData\Roaming\vlc\vlc.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:1692
        • C:\Users\Admin\AppData\Roaming\vlc\vlc.exe
          C:\Users\Admin\AppData\Roaming\vlc\vlc.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          PID:592

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe
    Filesize

    98KB

    MD5

    43c7d08e54bf21d3ea46a7ca54fcbdf5

    SHA1

    882709a827776ec2f2a6bba8c862f984260c1d0e

    SHA256

    afc89defa581279ad5bfc2f9c02b79d3e78b40ac60f3ae9836f125ea77f7d9c4

    SHA512

    4440a77ea7cb9037b7afb0e3beff10af0e965a888582ee9cf9d747d2d977e5830f49a68582e66f02cb007e11320038b5977a76649d32c8c15343281edd855a1d

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe
    Filesize

    98KB

    MD5

    43c7d08e54bf21d3ea46a7ca54fcbdf5

    SHA1

    882709a827776ec2f2a6bba8c862f984260c1d0e

    SHA256

    afc89defa581279ad5bfc2f9c02b79d3e78b40ac60f3ae9836f125ea77f7d9c4

    SHA512

    4440a77ea7cb9037b7afb0e3beff10af0e965a888582ee9cf9d747d2d977e5830f49a68582e66f02cb007e11320038b5977a76649d32c8c15343281edd855a1d

  • C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp
    Filesize

    8B

    MD5

    83003d5ab51f455fc4b251db361dc49c

    SHA1

    4cc6b42e0ee44c72c31c8b5ef98d5e87a6e4218a

    SHA256

    973167f2a8e90a13c1acbc6e148af01c20e862e99a12961a4bb6ed2facd0dff7

    SHA512

    2a7f0b9d6a7f48f8773f2f0c23b6d9ce7065400ad71a11ee836bef90dd95fe996c4e4a4a52c7a3a00c574207bc62e462eb2eef969f3f727e62d57df9f9010c6b

  • C:\Users\Admin\AppData\Roaming\vlc\vlc.exe
    Filesize

    47.6MB

    MD5

    a94c7bfb1c998b0ec92dd8d57fdab6f2

    SHA1

    7687a80f03d42993b7020236e19255440d233c04

    SHA256

    4b81262ef6df938c66a02406a4e7e5df51390f0d78ef3ea95cbaa910ae233662

    SHA512

    4d8fa49bdb232bd65ee3eec8056ea28f16f7b7500a28ded5cb306c4708221eb29b3b32fb13f7680c9468ba504c9cb364a7978c9ad2775ecc94d067d1da628d84

  • C:\Users\Admin\AppData\Roaming\vlc\vlc.exe
    Filesize

    47.6MB

    MD5

    a94c7bfb1c998b0ec92dd8d57fdab6f2

    SHA1

    7687a80f03d42993b7020236e19255440d233c04

    SHA256

    4b81262ef6df938c66a02406a4e7e5df51390f0d78ef3ea95cbaa910ae233662

    SHA512

    4d8fa49bdb232bd65ee3eec8056ea28f16f7b7500a28ded5cb306c4708221eb29b3b32fb13f7680c9468ba504c9cb364a7978c9ad2775ecc94d067d1da628d84

  • C:\Windows\svchost.com
    Filesize

    40KB

    MD5

    b404bd63e6d27581f5899096494a9716

    SHA1

    52797a4c07b58821d5db81b41069c0090d887c0b

    SHA256

    67d6d28c3971df6f79226f09ffdd8329dbe12e3aca7863e0efddc0fe27931365

    SHA512

    5b64a1640dd10c008b730d5b7b2edf433e210fc70487134db07bcf663077148ba99770c5addf9a9e782c9679acaf97dcdcb6b8e9ec9914a730caa60aa0cca4fb

  • C:\Windows\svchost.com
    Filesize

    40KB

    MD5

    b404bd63e6d27581f5899096494a9716

    SHA1

    52797a4c07b58821d5db81b41069c0090d887c0b

    SHA256

    67d6d28c3971df6f79226f09ffdd8329dbe12e3aca7863e0efddc0fe27931365

    SHA512

    5b64a1640dd10c008b730d5b7b2edf433e210fc70487134db07bcf663077148ba99770c5addf9a9e782c9679acaf97dcdcb6b8e9ec9914a730caa60aa0cca4fb

  • \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\e9cf73adc8da7d74d6477c61664c22ba624365d56fefa99aede69d3e447d9d80.exe
    Filesize

    98KB

    MD5

    43c7d08e54bf21d3ea46a7ca54fcbdf5

    SHA1

    882709a827776ec2f2a6bba8c862f984260c1d0e

    SHA256

    afc89defa581279ad5bfc2f9c02b79d3e78b40ac60f3ae9836f125ea77f7d9c4

    SHA512

    4440a77ea7cb9037b7afb0e3beff10af0e965a888582ee9cf9d747d2d977e5830f49a68582e66f02cb007e11320038b5977a76649d32c8c15343281edd855a1d

  • \Users\Admin\AppData\Roaming\vlc\vlc.exe
    Filesize

    47.6MB

    MD5

    a94c7bfb1c998b0ec92dd8d57fdab6f2

    SHA1

    7687a80f03d42993b7020236e19255440d233c04

    SHA256

    4b81262ef6df938c66a02406a4e7e5df51390f0d78ef3ea95cbaa910ae233662

    SHA512

    4d8fa49bdb232bd65ee3eec8056ea28f16f7b7500a28ded5cb306c4708221eb29b3b32fb13f7680c9468ba504c9cb364a7978c9ad2775ecc94d067d1da628d84

  • memory/592-70-0x0000000000000000-mapping.dmp
  • memory/592-72-0x0000000000270000-0x000000000028E000-memory.dmp
    Filesize

    120KB

  • memory/864-62-0x0000000000000000-mapping.dmp
  • memory/864-75-0x0000000072BE0000-0x000000007318B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-59-0x0000000000E20000-0x0000000000E3E000-memory.dmp
    Filesize

    120KB

  • memory/900-56-0x0000000000000000-mapping.dmp
  • memory/1692-64-0x0000000000000000-mapping.dmp
  • memory/1972-54-0x0000000075FE1000-0x0000000075FE3000-memory.dmp
    Filesize

    8KB