Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    30/09/2026, 19:34

General

  • Target
    Cl1ient.exe
  • Size 538KB
  • Sample260930-yahtesserf
  • SHA256 4449878fc8fbc45a1cc696aa041fc73d7006340cb6f8a85bb49144bff8c9dfa3
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • sheetrat

Version
  • 2.6

Campaign
  • Sheet_okdjwdikbfdjj

Signatures

  • Family: Sheetrat, NonEuclid rat

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

  • Detects Sheetrat obfuscated V1.8 and higher 1 IoCs

    Sheetrat aka NonEuclid RAT is a trojan written in C#.

  • Detects Sheetrat obfuscated version 1 IoCs
  • Modifies security service 2 TTPs 4 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Cl1ient.exe
    "C:\Users\Admin\AppData\Local\Temp\Cl1ient.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    PID:5176
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /7
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:5444
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k NetworkService -p
    1⤵
    • Modifies security service
    PID:4252

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/5176-0-0x0000000000D80000-0x0000000000E0C000-memory.dmp

        memory/5176-1-0x000000001DFA0000-0x000000001DFB0000-memory.dmp

        memory/5176-2-0x000000001DFA0000-0x000000001DFB0000-memory.dmp

        memory/5444-4-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-5-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-3-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-9-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-15-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-14-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-13-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-12-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-11-0x0000018DDB850000-0x0000018DDB851000-memory.dmp

        memory/5444-10-0x0000018DDB850000-0x0000018DDB851000-memory.dmp