General

  • Target

    Amongus.exe

  • Size

    55KB

  • Sample

    250304-1ay7hs1rx4

  • MD5

    5a56065a3cb76c24738719ff09686ea6

  • SHA1

    269254a2a77e708480d05b355348a6756cf3130e

  • SHA256

    98336c4a295bdf723f9972a7de8b439fdfc2b067fce7e219b48d11e9b803ca67

  • SHA512

    e3413dc25bd29e8e0553db27528dc2c3f3ac67bdfcd3c93e608ed8b92a5b1ddd3e16dcb0517b0becc2ed95a853b7e12dc15e92d2e0c800b3c2d581c73c4fe8ad

  • SSDEEP

    768:vIU44Oj5X88UOzTx4tfLFFO7mWbIwhTzkKL/t/X6snGRohJOcCouejK:vHCZNOpFO79bIw9IK5/rbO+uh

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %port%

  • pastebin_url

    https://pastebin.com/raw/GMv8QPCE

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe

exe.dropper

https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat

Targets

    • Target

      Amongus.exe

    • Size

      55KB

    • MD5

      5a56065a3cb76c24738719ff09686ea6

    • SHA1

      269254a2a77e708480d05b355348a6756cf3130e

    • SHA256

      98336c4a295bdf723f9972a7de8b439fdfc2b067fce7e219b48d11e9b803ca67

    • SHA512

      e3413dc25bd29e8e0553db27528dc2c3f3ac67bdfcd3c93e608ed8b92a5b1ddd3e16dcb0517b0becc2ed95a853b7e12dc15e92d2e0c800b3c2d581c73c4fe8ad

    • SSDEEP

      768:vIU44Oj5X88UOzTx4tfLFFO7mWbIwhTzkKL/t/X6snGRohJOcCouejK:vHCZNOpFO79bIw9IK5/rbO+uh

    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • Sets service image path in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks