Analysis

  • max time kernel
    64s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 11:22

General

  • Target

    b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe

  • Size

    264KB

  • MD5

    30c103a128df62ca59a787716b770900

  • SHA1

    8d006ccb8798304cad93f67b805346c52350b0c9

  • SHA256

    b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606

  • SHA512

    c811f38b48b4624142ad8e53bbbcaeb01b4bd9a0bc89f9c4b48fa7341f1d67475d483115db6353612c1fd75fa9071f9f2575f5ca3b2b58612e313634b3954bdd

  • SSDEEP

    6144:PuaekInuIHERjFJaW7/mf5FwIBkfGPfPZ:8uIHE7J9G52UkfGPnZ

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 3 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\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe
    "C:\Users\Admin\AppData\Local\Temp\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.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:1428
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe"
      2⤵
      • Executes dropped EXE
      PID:1352

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\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe
    Filesize

    223KB

    MD5

    25902a9fa8a7b274bd7b2b0062c5e3ad

    SHA1

    1db9b2d73863797c919656a31aedc67f4dda0956

    SHA256

    bbce2991761b720853e09584c9f59a4145c81d10fd61b28a776cc09cd3bb99c4

    SHA512

    47648b3f1082559b0475998e987578924003de60a7a9619cc61af4d2e6857642cfd7b68ab15099ebbfd89c7462f122136945b81cceb69ff73edd49a53a893725

  • \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\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe
    Filesize

    223KB

    MD5

    25902a9fa8a7b274bd7b2b0062c5e3ad

    SHA1

    1db9b2d73863797c919656a31aedc67f4dda0956

    SHA256

    bbce2991761b720853e09584c9f59a4145c81d10fd61b28a776cc09cd3bb99c4

    SHA512

    47648b3f1082559b0475998e987578924003de60a7a9619cc61af4d2e6857642cfd7b68ab15099ebbfd89c7462f122136945b81cceb69ff73edd49a53a893725

  • \Users\Admin\AppData\Local\Temp\3582-490\b1a7101ef80aa6c387dea80962e76810e6ac64d740d7f763a52d7e7304da3606.exe
    Filesize

    223KB

    MD5

    25902a9fa8a7b274bd7b2b0062c5e3ad

    SHA1

    1db9b2d73863797c919656a31aedc67f4dda0956

    SHA256

    bbce2991761b720853e09584c9f59a4145c81d10fd61b28a776cc09cd3bb99c4

    SHA512

    47648b3f1082559b0475998e987578924003de60a7a9619cc61af4d2e6857642cfd7b68ab15099ebbfd89c7462f122136945b81cceb69ff73edd49a53a893725

  • memory/1352-57-0x0000000000000000-mapping.dmp
  • memory/1352-61-0x0000000000400000-0x00000000004D2000-memory.dmp
    Filesize

    840KB

  • memory/1352-63-0x0000000000400000-0x00000000004D2000-memory.dmp
    Filesize

    840KB

  • memory/1428-54-0x0000000075F51000-0x0000000075F53000-memory.dmp
    Filesize

    8KB

  • memory/1428-60-0x0000000002620000-0x00000000026F2000-memory.dmp
    Filesize

    840KB

  • memory/1428-64-0x0000000002620000-0x00000000026F2000-memory.dmp
    Filesize

    840KB