General
- Target 260821-27w9vss1fz_pw_infected.zip
- Size 280KB
- Sample260822-app92szcra
- SHA256 20e00671ed5dfa703feb59f41ef2d11995b4bf4514f8cf256f689b1725c71b37
- MD5 fc8a86875eb1e2ba0a51ff01a5ba515b
- SHA1 95aa6b86364fcf803582a6d9d71fc4d51f49f807
- SHA512 94a440990dd8c154941c7281b6ab9da5aa8554d2867333cdfe0d20dd28f8bda150cc7870267c0c690210fa67bae850519a08543f32ff39015854cfc373ff17d8
- SSDEEP 6144:7lBzkA3JsgUwhcHovRIAFAkaYaGQb3jDs/PFWm:7lj5ZnvvR9AjzDeT
- TLSH T1FC54223F67376E34F80E1309257E5CBC073257A254C85EAE92A67E4C019E78DCD4E61A
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
Client.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Client.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
sheetrat
-
Sheet_nbszmiyxtax
-
64.188.118.59:45501
Targets
-
- Target Client.exe
- Size 606KB
- SHA256 c09a5c1bf91bfab4d30f86e8ef3dbf09356594bd568b363ffbe91831e07eadbc
- MD5 0efef539bcb78dddb97878775a92c31e
- SHA1 234790c69b58e89337ef962c84803f539ec09086
- SHA512 b18ef07c18d6077dd709f99159d057f4ac7e2edea428745a0e3e180704941e85c9aaf53952e883426341826ca97c83be65c8a1aae3caf2df9f9f9f7a9173245e
- SSDEEP 12288:7UYRZyT+NPVle8OCgyY/6nMOde+93W5B:7U3agyy6MA93M
- TLSH T18AD4920CFD91F805DE2A3EB3CEE914045B7125C1AF2291423159AFFD8B6A37258A767C
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Detects Sheetrat obfuscated V1.8 and higher
Sheetrat aka NonEuclid RAT is a trojan written in C#.
-
Detects Sheetrat obfuscated version
-
Modifies WinLogon for persistence
-
Event Triggered Execution: AppInit DLLs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
-
Loads dropped DLL
-
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1