General

  • Target

    18ea5087eb82e075ca35d2b2dcff9450.exe

  • Size

    555KB

  • Sample

    241124-s4eqzasnej

  • MD5

    18ea5087eb82e075ca35d2b2dcff9450

  • SHA1

    dc436fbaa777672d44a8b90b98c4a1c266885845

  • SHA256

    a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725

  • SHA512

    8fbeb3caf13a3fe1359002c2848ff5767e6b2f226049546c683f2b6144756196cfe39f66e4959c8426cdfaeff6a169a4cf5939de241e4a898887d8810ec620c6

  • SSDEEP

    12288:32EIiN/Z1++w1p+wJuQbIgJwCQBk5wBcamd3ZhZs:3wiN/K+wHBfhQBk5s3mdPZs

Malware Config

Extracted

Family

xworm

Version

3.1

C2

87.121.86.8:4020

Mutex

ssjpS2lhbkGsnEgT

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target

      18ea5087eb82e075ca35d2b2dcff9450.exe

    • Size

      555KB

    • MD5

      18ea5087eb82e075ca35d2b2dcff9450

    • SHA1

      dc436fbaa777672d44a8b90b98c4a1c266885845

    • SHA256

      a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725

    • SHA512

      8fbeb3caf13a3fe1359002c2848ff5767e6b2f226049546c683f2b6144756196cfe39f66e4959c8426cdfaeff6a169a4cf5939de241e4a898887d8810ec620c6

    • SSDEEP

      12288:32EIiN/Z1++w1p+wJuQbIgJwCQBk5wBcamd3ZhZs:3wiN/K+wHBfhQBk5s3mdPZs

    • Detect Xworm Payload

    • Guloader family

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      75ed96254fbf894e42058062b4b4f0d1

    • SHA1

      996503f1383b49021eb3427bc28d13b5bbd11977

    • SHA256

      a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

    • SHA512

      58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

    • SSDEEP

      192:X24sihno0bW+l97H4GB7QDs91kMtwtobTr4u+QHbazMNHT7dmNIEr:m8vJl97JeoxtN/r3z7YV

    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks