Analysis

  • max time kernel
    147s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 16:30

General

  • Target

    1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe

  • Size

    646KB

  • MD5

    43dda2f11c235d1159b4aee3234fe1a0

  • SHA1

    3aefb94c0bc1471a6763affb964a6ff2c10e2041

  • SHA256

    1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb

  • SHA512

    c2be174a54c0b3828aaad6c959db8319738f6a11e61312379e4931f882b595ae73d845166d02ff6027770acc8b1ffb0598bf6e22b20fc85f49368deb7409c2e4

  • SSDEEP

    12288:r6yWi+V5B0xVJzhVPARJvd9Wpp8pP2gjDd1Ddv:RfzvAjWpp8pFjDd1Ddv

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\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe
    "C:\Users\Admin\AppData\Local\Temp\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.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:2040
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe"
      2⤵
      • Executes dropped EXE
      PID:1952

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\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe
    Filesize

    606KB

    MD5

    1042d94720dc64e98544acfbdd0942cb

    SHA1

    4330ff12e9c854b49a0b971bc3d5365fa2dfee04

    SHA256

    c574b686b5d5b7b0fc41120f20cd2352b6d789c735faed4d474b09c0ffd88c5b

    SHA512

    908b75103be49227048cd71a6faa7983ebea86816baf7a0fc43e8643350db48308d795464ca0aa51a29be558fc991910404ad0939d040a19b9f100f2a3c80c71

  • \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\1033fb9fcc5271aa5dcabd726cc9ac466fcf9c70c87cb9970652d17b2050bdbb.exe
    Filesize

    606KB

    MD5

    1042d94720dc64e98544acfbdd0942cb

    SHA1

    4330ff12e9c854b49a0b971bc3d5365fa2dfee04

    SHA256

    c574b686b5d5b7b0fc41120f20cd2352b6d789c735faed4d474b09c0ffd88c5b

    SHA512

    908b75103be49227048cd71a6faa7983ebea86816baf7a0fc43e8643350db48308d795464ca0aa51a29be558fc991910404ad0939d040a19b9f100f2a3c80c71

  • memory/1952-56-0x0000000000000000-mapping.dmp
  • memory/2040-54-0x0000000076691000-0x0000000076693000-memory.dmp
    Filesize

    8KB