Extracted

• • Target

    Update.exe

  • Size

    38.5MB

  • MD5

    296d089e59c5a5146135499524484a02

  • SHA1

    48bda19fa864bc2e4079e0c0c30f83689650d9ab

  • SHA256

    d42f8a93cace8653b408cb4b57bc3d8b6a156183ae513b7343f9a2e0a7533242

  • SHA512

    92e3b56c82b73b801499f1e5cfcb3e802896a7fe8c485fa9988babc3ba59e1144fc4f642a873b01f67f9193f3f98c08e18f2c9bfca59ca4c890d14da27ec525b

  • SSDEEP

    786432:4RQBBjb7I56Oe6r5siaZkfcUih07SVUGmoMO1otZK1TVj+9qoSJHU:4ROlb7InzrOiaZqiKSVgOgM1T1+G

  Score

  10^/10

  upxgurcumilleniumratdiscoveryevasionexecutionpersistencepyinstallerratspywarestealer

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

    stealergurcu

  • MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

    ratstealermilleniumrat

  • Suspicious use of NtCreateUserProcessOtherParentProcess

  • Command and Scripting Interpreter: PowerShell

    Using powershell.exe command.

    execution

  • Contacts a large (1259) amount of remote hosts

    This may indicate a network scan to discover remotely running services.

    discovery

  • Stops running service(s)

    evasionexecution

  • Checks BIOS information in registry

    BIOS information is often read in order to detect sandboxing environments.

  • 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.

    spywarestealer

  • UPX packed file

    Detects executables packed with UPX/modified UPX open source packer.

    upx

  • Accesses cryptocurrency files/wallets, possible credential harvesting

    spyware

  • Adds Run key to start application

    persistence

  • 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.

  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

  behavioral1behavioral2