Analysis

  • max time kernel
    152s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 10:13

General

  • Target

    dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a.exe

  • Size

    1.7MB

  • MD5

    7f1e19e6a7e3b776a4ec5f1c8e47d204

  • SHA1

    ff4964ebc0c765bb65649afc18f84c7303efa762

  • SHA256

    dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a

  • SHA512

    4fbecd11d21f697267f89c442e8a56f187bea5c2c104da81a6b105b00d8e97a70e18726c44967b051ba761dc9286074f103807fc057604588d976f166e89ec83

  • SSDEEP

    24576:Yo6cpe78oLOIJ1B+BhGnaibVdYb4Td7X7wOQKILfylLVgughh0RCNS0zYsIDAxko:dHpe8oRJUMaikkT/2hh3LYRUkXj0

Malware Config

Signatures

  • Detect Neshta payload 6 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.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a.exe
    "C:\Users\Admin\AppData\Local\Temp\dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a.EXE
      "C:\Users\Admin\AppData\Local\Temp\dc33b2cdff537e1aaf209713e452f1fac748394d75b1c60ec62d51aa9b50910a.EXE"
      2⤵
      • Modifies system executable filetype association
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      PID:2000

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
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

  • memory/1720-56-0x0000000000400000-0x000000000040A000-memory.dmp
    Filesize

    40KB

  • memory/1720-71-0x0000000000400000-0x000000000040A000-memory.dmp
    Filesize

    40KB

  • memory/2000-66-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-67-0x00000000004080E4-mapping.dmp
  • memory/2000-61-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-62-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-63-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-64-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-58-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-60-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-68-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-69-0x00000000762B1000-0x00000000762B3000-memory.dmp
    Filesize

    8KB

  • memory/2000-70-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-57-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-72-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/2000-73-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB