Analysis

  • max time kernel
    137s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 18:11

General

  • Target

    6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe

  • Size

    202KB

  • MD5

    7d25f3c8479bd92a159f3a5baff85ad0

  • SHA1

    ac5a45cbd37eb862de9ae87229319feb9e07fb2c

  • SHA256

    6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838

  • SHA512

    ea3b33fc031e30dc380ceafecae99ae2f9d4cb469b04cb046c076dd74d9b014fc17bd06af3433200a917464b06bfb0625c8a3ed8318fef8431735f865657e04d

  • SSDEEP

    3072:sr85Cv5KwJex+nHFtloFc4eaivCKVAi+owpx6r2hlhBwwoTGCVY6zB:k9v5KwQ0nl/21owX6YfqNTfVfzB

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\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe
    "C:\Users\Admin\AppData\Local\Temp\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.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:1404
    • C:\Users\Admin\AppData\Local\Temp\3582-490\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe"
      2⤵
      • Executes dropped EXE
      PID:1616

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\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe
    Filesize

    161KB

    MD5

    55224509d4a4e1214676aec9d49759c7

    SHA1

    9adc5aaefaeeec136d8370a3237254468a5a1d93

    SHA256

    4a8e28ea329ea13bf7a180dc1ea60f5311ca906a235857dc7debc8ac80bb7c80

    SHA512

    1dad3c094f52d126a7c08e30b43cb5b00a90c293c0f6a7c72e8f22f1f1826bf9fc81280c4c0faa04b704f604a726bc79fd968c8fa6113466b27d938e16ee4d41

  • \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\6e8f33fe7ad51c7640b5fdc03925ab93d6b3cf978f8548c609c622c4e809c838.exe
    Filesize

    161KB

    MD5

    55224509d4a4e1214676aec9d49759c7

    SHA1

    9adc5aaefaeeec136d8370a3237254468a5a1d93

    SHA256

    4a8e28ea329ea13bf7a180dc1ea60f5311ca906a235857dc7debc8ac80bb7c80

    SHA512

    1dad3c094f52d126a7c08e30b43cb5b00a90c293c0f6a7c72e8f22f1f1826bf9fc81280c4c0faa04b704f604a726bc79fd968c8fa6113466b27d938e16ee4d41

  • memory/1404-54-0x0000000074F01000-0x0000000074F03000-memory.dmp
    Filesize

    8KB

  • memory/1616-56-0x0000000000000000-mapping.dmp