sheetrat | b94f97443a48a2f689eebe3da7e6f984c8b78e6a8b81bb2b335ff01fb372d0ef

General

Target
xb94f97443a48a2f689eebe3da7e6f984c8b78e6a8b81bb2b335ff01fb372d0ef.exe
Size 375KB
Sample260506-erc5qaat5x
SHA256 b94f97443a48a2f689eebe3da7e6f984c8b78e6a8b81bb2b335ff01fb372d0ef
MD5 47709af52a20f3a878c931598001c473
SHA1 de77556e38b70d8e29098b67f740a21aaf202441
SHA512 5277eeeb3dd040d54ea298985a996049aaaef1d86a65574c149671067aa35549a94bf38261c2eb3dff8c4b74d230efb345acdae541e58c279628f0ccd045b542
SSDEEP 6144:8Ibf4SpaC49wz4ZoeETEW1gbpJA3KpSL0pD/1rmKbn:8Ibf4E49ULePJA3KY0p7Bmw
TLSH
T170845A43BBD000BAE5BE463844735619A77AF8214B62EBDF169404ED0E277C6DD38F62
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

Malware Config

Targets

- Target
  xb94f97443a48a2f689eebe3da7e6f984c8b78e6a8b81bb2b335ff01fb372d0ef.exe
- Size 375KB
- SHA256 b94f97443a48a2f689eebe3da7e6f984c8b78e6a8b81bb2b335ff01fb372d0ef
- MD5 47709af52a20f3a878c931598001c473
- SHA1 de77556e38b70d8e29098b67f740a21aaf202441
- SHA512 5277eeeb3dd040d54ea298985a996049aaaef1d86a65574c149671067aa35549a94bf38261c2eb3dff8c4b74d230efb345acdae541e58c279628f0ccd045b542
- SSDEEP 6144:8Ibf4SpaC49wz4ZoeETEW1gbpJA3KpSL0pD/1rmKbn:8Ibf4E49ULePJA3KY0p7Bmw
- TLSH
  T170845A43BBD000BAE5BE463844735619A77AF8214B62EBDF169404ED0E277C6DD38F62
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

10^/10

bootkit defense_evasion discovery evasion execution exploit sheetrat persistence ransomware trojan
- Detects Sheetrat Payload
  Sheetrat aka NonEuclid RAT is a trojan written in C#.
- Family: Sheetrat, NonEuclid rat
  Sheetrat aka NonEuclid RAT is a trojan written in C#.
  trojan sheetrat
- Modifies WinLogon for persistence
  persistence
- Modifies Windows Defender DisableAntiSpyware settings
  evasion trojan
- Modifies Windows Defender TamperProtection settings
  evasion trojan
- Modifies security service
  defense_evasion
- UAC bypass
  defense_evasion trojan
- Modifies boot configuration data using bcdedit
  ransomware evasion
- Drops file in Drivers directory
- Possible privilege escalation attempt
  exploit
- Sets service image path in registry
  This determines the executable launched when a service starts. It can be used to establish persistence.
  persistence
- 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
- Indicator Removal: Clear Windows Event Logs
  Clear Windows Event Logs to hide the activity of an intrusion.
  defense_evasion
- Loads dropped DLL
- Modifies file permissions
  discovery
- Stops running service(s)
  defense_evasion execution
- Windows security modification
  defense_evasion trojan
- Checks whether UAC is enabled
  defense_evasion trojan
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- File and Directory Permissions Modification: Windows File and Directory Permissions Modification
  defense_evasion
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Drops file in System32 directory
behavioral1 behavioral2