Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    13-02-2022 15:12

General

  • Target

    1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe

  • Size

    140KB

  • MD5

    fc9081f8b9545d5cdb3d6d737db6a835

  • SHA1

    4fb7b2d72462464fef618997ea143038051df1a2

  • SHA256

    1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862

  • SHA512

    212184f725efc992799778d8d8e8022362391fc0eb22488380fff0f336b18e80d7527778fece7c2c75e99fbc07c7098ecc2a492fa50dcef8e3667d1c2b6d0e1d

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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe
    "C:\Users\Admin\AppData\Local\Temp\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.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:5052
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe"
      2⤵
      • Executes dropped EXE
      PID:4284
  • 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:1484
  • 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:5012

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe
    MD5

    d24bff18f8bdf2356f93f458a12c65e3

    SHA1

    c95813e7b13a5b0d4868d12da5034fb3581afb68

    SHA256

    549d9cf32278d82d839eda2bebe63ab953c5c2b0069b57f576754f8894dab92c

    SHA512

    b450977597ff1baf2802a5d94a199ae038a33f3a87ed9ab8e4f005030de1c4b964e1d9339a505a5e3973890c203c9b6e6548dcb15bff970f32bc88efb83cdceb

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1caf18d0d658598e9a9a98a99531c78f1aa015c8eb335c9627f15cf67064c862.exe
    MD5

    d24bff18f8bdf2356f93f458a12c65e3

    SHA1

    c95813e7b13a5b0d4868d12da5034fb3581afb68

    SHA256

    549d9cf32278d82d839eda2bebe63ab953c5c2b0069b57f576754f8894dab92c

    SHA512

    b450977597ff1baf2802a5d94a199ae038a33f3a87ed9ab8e4f005030de1c4b964e1d9339a505a5e3973890c203c9b6e6548dcb15bff970f32bc88efb83cdceb

  • memory/1484-132-0x0000022B49590000-0x0000022B495A0000-memory.dmp
    Filesize

    64KB

  • memory/1484-133-0x0000022B49D60000-0x0000022B49D70000-memory.dmp
    Filesize

    64KB

  • memory/1484-134-0x0000022B4C970000-0x0000022B4C974000-memory.dmp
    Filesize

    16KB