Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    11-02-2022 05:40

General

  • Target

    49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe

  • Size

    798KB

  • MD5

    fb05f6f3f0d4b4e50af8a270d4d6b527

  • SHA1

    84424b6f3ab0659889269d1d670399b2d8ed229e

  • SHA256

    49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4

  • SHA512

    b8e5bb89084a1d305483abd1669759ed8859845d0b127603d66b76e85075f5f71f82651736c4074ecc511a7f14c12b7c37f4fcb9a71022330875516c2ca8733c

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 9 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 AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe
    "C:\Users\Admin\AppData\Local\Temp\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.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:2748
    • C:\Users\Admin\AppData\Local\Temp\3582-490\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe"
      2⤵
      • Executes dropped EXE
      PID:460
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1016
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe
    MD5

    2030d70ca5a745bd357902be55a08f79

    SHA1

    7a3a275909fa3bb9f046f519e034b65836af055a

    SHA256

    386e2bcf049c7ce689a37ecaebc2758ef97f6f32b41d1c37a0ee774ae2cb5962

    SHA512

    80e218012ac75d28728b41ed357af4bf65330d23e68211f1d001f54351f9f4f3a587af3338d47a6169c90f1d3ffc07815693fb19e81d124d5fb0c487dbcd6922

  • C:\Users\Admin\AppData\Local\Temp\3582-490\49233a7ee26c31148bd1aac90c85f35f94577cd6c39c884f058fde7ee37129f4.exe
    MD5

    2030d70ca5a745bd357902be55a08f79

    SHA1

    7a3a275909fa3bb9f046f519e034b65836af055a

    SHA256

    386e2bcf049c7ce689a37ecaebc2758ef97f6f32b41d1c37a0ee774ae2cb5962

    SHA512

    80e218012ac75d28728b41ed357af4bf65330d23e68211f1d001f54351f9f4f3a587af3338d47a6169c90f1d3ffc07815693fb19e81d124d5fb0c487dbcd6922

  • memory/1016-132-0x0000020037730000-0x0000020037740000-memory.dmp
    Filesize

    64KB

  • memory/1016-133-0x0000020037790000-0x00000200377A0000-memory.dmp
    Filesize

    64KB

  • memory/1016-134-0x000002003A490000-0x000002003A494000-memory.dmp
    Filesize

    16KB