General

  • Target
    Uemlxaw.zip
  • Size 4.9MB
  • Sample240318-slmnvscc5w
  • SHA256 4a009d7516245a7af1dbc74beacd149316212a8cbd045132e7f95118bfafcece
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • risepro

C2
  • 95.217.5.29:50500

Extracted

Family
  • systembc

C2
  • wprogs.top:4001

  • leadsoftware.top:4001

Targets

    • Target
      Narsil.exe
    • Size 146.9MB
    • SHA256 33e28ac931d8477eb8d20603b7b8d8cd55a4356ef106d24b02fa3a36be0ee087
    • MD5 SHA1 SHA512 SSDEEP
    • Detect ZGRat V1

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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

    • Target
      SurrogateServerIntoSvc.exe
    • Size 147.8MB
    • SHA256 df18a66e0d7dac7371e4371005a83e4735f5e22377b28f00bb0f41a3feee92a5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • Detect ZGRat V1

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Checks computer location settings

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

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

    • Target
      winserverupd.exe
    • Size 91KB
    • SHA256 c06da1d7ce6843074ae3a964dc8aa862151f2196c0e15964d3d9959a44ba89f8
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

    • Modifies security service

    • Checks computer location settings

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

MITRE ATT&CK Enterprise v15

Tasks