Analysis

  • max time kernel
    113s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2022 18:12

General

  • Target

    2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe

  • Size

    272KB

  • MD5

    4506c457537755ee865e7a935f760e3b

  • SHA1

    cc782ad14a0a034dcc53e65a05b09558e1f22baf

  • SHA256

    2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2

  • SHA512

    8d5bc67bdae6467bd4c2733a9c2f5147fb50e7396b7d065bafd46cd64a6af09047a621e66c6ae9508cd38f65516496c57cbf6874ae745574fb250f777bd89b73

  • SSDEEP

    6144:k9IP890XvXnPG58IbdAxI8xC7TwZGa6aP2syFob:V0QfO87A7Twka6aP6A

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe
    "C:\Users\Admin\AppData\Local\Temp\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4964
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 1100
        3⤵
        • Drops file in Windows directory
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:2748

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

Query Registry

3
T1012

System Information Discovery

4
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe
    Filesize

    232KB

    MD5

    8c1095e8c8f39f78a4380c3e663b8438

    SHA1

    4b7e59c227eeace15bb346a5d81600ce7b2b5444

    SHA256

    6145176cee41c81c5ca48b265d82fd9025325211b17b005ddd81b7a1d06d2482

    SHA512

    c4c12c00224800ad545dff4be2d73806c9582c3fec5fb13cadefdc2a683218a2c20adc7b1fbabfd98f47769f4fdff4755698395e602d6a13a7cb66de2229b2b8

  • C:\Users\Admin\AppData\Local\Temp\3582-490\2f733b75dc52e39be8cba27c7a312511685fe03ee70f29ad1ff1c419c9c530b2.exe
    Filesize

    232KB

    MD5

    8c1095e8c8f39f78a4380c3e663b8438

    SHA1

    4b7e59c227eeace15bb346a5d81600ce7b2b5444

    SHA256

    6145176cee41c81c5ca48b265d82fd9025325211b17b005ddd81b7a1d06d2482

    SHA512

    c4c12c00224800ad545dff4be2d73806c9582c3fec5fb13cadefdc2a683218a2c20adc7b1fbabfd98f47769f4fdff4755698395e602d6a13a7cb66de2229b2b8

  • memory/2160-132-0x0000000000000000-mapping.dmp
  • memory/2160-135-0x0000000073800000-0x0000000073DB1000-memory.dmp
    Filesize

    5.7MB

  • memory/2160-137-0x0000000073800000-0x0000000073DB1000-memory.dmp
    Filesize

    5.7MB

  • memory/2748-136-0x0000000000000000-mapping.dmp