General

  • Target

    a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

  • Size

    2.0MB

  • Sample

    230926-r2gl4sac7s

  • MD5

    a0524f23d52b8b507d75b088c7eae822

  • SHA1

    f630da68a905385ad8178df8b00964acda381505

  • SHA256

    8506e666c372ca8121a6919a63f06846894a32c5ea3ab4b2fd73fbb631fe991e

  • SHA512

    53c4ba53293a0a4a9069d46009ab65d3256e82c6e8c4e896254699fc54eb001982a36256d5c13c3279ffc930535b3bc13fcb079f468fd74e4a59dbd59bfadb7b

  • SSDEEP

    49152:k4f5KB1PGELs953r91/yLGUc3Gb9OdpbDQ6dKRd3mL4o1gT2vEegZ:jf5+c11t8wc6gR9M4LT2vvgZ

Malware Config

Extracted

Family

wshrat

C2

http://80.76.51.33:2606

Targets

    • Target

      a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

    • Size

      2.1MB

    • MD5

      066dbf69cbfa16c46a2142a257c95f1d

    • SHA1

      0300eb287c3e29642877772c348c6b683b86a305

    • SHA256

      a075c57c5e9ab478af53bbfa19faf2fecb404abd0d1ba953e84d347d5093f906

    • SHA512

      c1874bf3d3c6c56168eec1b18242af7562696e9c556ab7612b4c592b78b76286ce80a44cd55222df39f4e85e27cdf19b084dfd0a24127a73615f04545925da7a

    • SSDEEP

      49152:wkQTArh5KH1JME1y9fb95r/6LGoc30b9KJp9D06dkRNLkL+mrcTuZqy:warh5s41rL6WY6SRpO+dTuZP

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • WSHRAT payload

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • Nirsoft

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks