Analysis

  • max time kernel
    175s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2022 14:41

General

  • Target

    816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe

  • Size

    258KB

  • MD5

    4f0b50784beb9a1dd506b2bd8dada113

  • SHA1

    51234eafca02247fef4115a1a6fef369bc872ebb

  • SHA256

    816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9

  • SHA512

    ed8dd0f77c5e96c4d42aa15481250a710f430f006b7980ef6b2437fcf94503aeaa40e4bf34fc81e53cfbd79465ce41468bc8060af564a2dbb45744ae39d34258

  • SSDEEP

    6144:k95xk7oooo1C6wmAp7d3rqC90zQyVc6eON2cVm:6xk7Xozo++5zD9eON2co

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 2 IoCs
  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe
    "C:\Users\Admin\AppData\Local\Temp\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.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:956
    • C:\Users\Admin\AppData\Local\Temp\3582-490\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe"
      2⤵
      • Executes dropped EXE
      PID:900

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

  • C:\Users\Admin\AppData\Local\Temp\3582-490\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe
    Filesize

    217KB

    MD5

    7ac7ed1a942ea8ac8ce877e1ac2a22ae

    SHA1

    5bf847fa6e2d0fefd2ee20ee34151412c30ea1d7

    SHA256

    3f8bd112ea17b2e8d25601e3da5c55af2f3685f56a3c329c06bc45a23ca8a38b

    SHA512

    5c99cfc103a952d9484be8c62e6cf685e93160dc7f06da7f0b89a3832664e8f80049b3114860514e59bb9486924e04812de0c8f0c514c7fddc306fc27806b288

  • \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\816804a1bc504b480d67b0471048f6af37eb4ed66942e736dffd62d4ee478ba9.exe
    Filesize

    217KB

    MD5

    7ac7ed1a942ea8ac8ce877e1ac2a22ae

    SHA1

    5bf847fa6e2d0fefd2ee20ee34151412c30ea1d7

    SHA256

    3f8bd112ea17b2e8d25601e3da5c55af2f3685f56a3c329c06bc45a23ca8a38b

    SHA512

    5c99cfc103a952d9484be8c62e6cf685e93160dc7f06da7f0b89a3832664e8f80049b3114860514e59bb9486924e04812de0c8f0c514c7fddc306fc27806b288

  • memory/900-56-0x0000000000000000-mapping.dmp
  • memory/900-59-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/956-54-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/956-58-0x0000000002750000-0x0000000002785000-memory.dmp
    Filesize

    212KB

  • memory/956-61-0x0000000002750000-0x0000000002785000-memory.dmp
    Filesize

    212KB