Analysis

  • max time kernel
    249s
  • max time network
    392s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 00:32

General

  • Target

    9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe

  • Size

    140KB

  • MD5

    24e845e05c8e1d528c6bddd675cbadea

  • SHA1

    9ee56bdf956f3202b684e1ee61df551d74e90b81

  • SHA256

    9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8

  • SHA512

    434d79c6b9deb00c2806b784261431e3431be996001996ca5cc90cdeb6692c2f5e37c93acf9bbc0bdcb5016a86adf997f656743323c8a5d1a0131dec2ee70e9c

  • SSDEEP

    1536:JxqjQ+P04wsmJCvaICi4wVpLwhwcn7HFGb1chsTEWi5twHQ+P04wsmJC:sr85CvaIZ4wDLwhwI7HFGuruHr85C

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.

  • 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.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe
    "C:\Users\Admin\AppData\Local\Temp\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3584
    • C:\Users\Admin\AppData\Local\Temp\3582-490\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe"
      2⤵
      • Executes dropped EXE
      PID:4520
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 4520 -s 144
        3⤵
        • Program crash
        PID:3296
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 444 -p 4520 -ip 4520
    1⤵
      PID:3944

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Change Default File Association

    1
    T1042

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe
      Filesize

      100KB

      MD5

      117edf4d597f1310251c8bbda43b3dfe

      SHA1

      d9f14bc2c06c262455d05447707ac719e5545f72

      SHA256

      90da85a34d5282e62ce5663d2c65148705d144a0e9b05940a6ea76be8ad8b006

      SHA512

      435ba91098a7e8bc6fdbe57d529bf890248f2f4af26bde09d5097012439c3fb82f94f2f4441f752bf01ca4cfd30c6b5f5cb9bd41c5e175d1443df4e5b1694e20

    • C:\Users\Admin\AppData\Local\Temp\3582-490\9ae5114818b67e648426145288e178d9190844ad6ae433fb7445af40a1a244e8.exe
      Filesize

      100KB

      MD5

      117edf4d597f1310251c8bbda43b3dfe

      SHA1

      d9f14bc2c06c262455d05447707ac719e5545f72

      SHA256

      90da85a34d5282e62ce5663d2c65148705d144a0e9b05940a6ea76be8ad8b006

      SHA512

      435ba91098a7e8bc6fdbe57d529bf890248f2f4af26bde09d5097012439c3fb82f94f2f4441f752bf01ca4cfd30c6b5f5cb9bd41c5e175d1443df4e5b1694e20

    • memory/4520-132-0x0000000000000000-mapping.dmp