sheetrat | 1ebe91ec32dacea8ef90ae7ed4f39676bf8e3c7edcaeb48f650e5113a461ab79

Resubmissions

28/06/2026, 17:52

260628-wf16vaaz8n10

28/06/2026, 17:50

260628-we39taaz4r10

28/06/2026, 17:49

260628-webjssaz3m10

Analysis

user interaction
yes
max time kernel
68s
max time network
71s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
28/06/2026, 17:49

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General

Target
nliduaq3zbfeb4l3.exe
Size 817KB
Sample260628-webjssaz3m
SHA256 1ebe91ec32dacea8ef90ae7ed4f39676bf8e3c7edcaeb48f650e5113a461ab79
MD5 378eb13bd95adfd95059e8b3daeea422
SHA1 e1d14a280036b0be8fa7a795032436ec921e9d6a
SHA512 61d2dd9b74f811a91dc3ecce90f9d4390ecbba78cc51845de04b6d9e2ccb04697b6fbaab38133580f4dee9f39472d4e9e7162d31373d9ea8e962cb2121361e24
SSDEEP 12288:96LVgoiLGq0MGZ1f9e5q3FmO0oIsxilOW4xDuoEe51+g5:M1c5q1mjAn95meDR
TLSH
T1A705E6243F948E41E5501A3E86BE2A20D73260F2231367473B0BF7A15D45ADEED6D3DA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution sheetrat persistence trojan

Malware Config

Extracted

Family

sheetrat

Version

portbuddy.dev:42749

Signatures

Family: Sheetrat, NonEuclid rat
Sheetrat aka NonEuclid RAT is a trojan written in C#.
trojan sheetrat

Detects Sheetrat obfuscated V1.8 and higher 2 IoCs

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

resource	yara_rule
behavioral1/memory/4792-0-0x00000224328D0000-0x00000224329A0000-memory.dmp	family_sheetrat_v4
behavioral1/files/0x001a00000002b624-6.dat	family_sheetrat_v4

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Program Files\\Steam.exe"	nliduaq3zbfeb4l3.exe

Executes dropped EXE 2 IoCs

pid	Process
3080	Steam.exe
4124	Steam.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.ipify.org
2	api.ipify.org
3	api.ipify.org
6	api.ipify.org

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Steam.exe	nliduaq3zbfeb4l3.exe
File opened for modification	C:\Program Files\Steam.exe	nliduaq3zbfeb4l3.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5368	schtasks.exe
876	schtasks.exe
5396	schtasks.exe
5448	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4792	nliduaq3zbfeb4l3.exe
Token: SeDebugPrivilege	3080	Steam.exe
Token: SeIncBasePriorityPrivilege	3080	Steam.exe
Token: SeDebugPrivilege	4124	Steam.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 5064	4792	nliduaq3zbfeb4l3.exe	83
PID 4792 wrote to memory of 5792	4792	nliduaq3zbfeb4l3.exe	84
PID 5792 wrote to memory of 5368	5792	cmd.exe	87
PID 4792 wrote to memory of 3080	4792	nliduaq3zbfeb4l3.exe	88
PID 3080 wrote to memory of 5512	3080	Steam.exe	89
PID 5512 wrote to memory of 876	5512	cmd.exe	91
PID 3080 wrote to memory of 3620	3080	Steam.exe	93
PID 3620 wrote to memory of 5396	3620	cmd.exe	95
PID 3080 wrote to memory of 5700	3080	Steam.exe	96
PID 5700 wrote to memory of 5448	5700	cmd.exe	98

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\nliduaq3zbfeb4l3.exe
"C:\Users\Admin\AppData\Local\Temp\nliduaq3zbfeb4l3.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" netsh advfirewall firewall add rule name="1x*M|_O5|*N=|%" dir=in action=allow program="C:\Program Files\Steam.exe" enable=yes & exit
  2⤵
  PID:5064
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Program Files\Steam.exe" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5792
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Program Files\Steam.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5368
- C:\Program Files\Steam.exe
  "C:\Program Files\Steam.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5512
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:876
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3620
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:5396
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5700
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Users\Admin\SteamProviderServices.exe" /RL HIGHEST
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:5448

C:\Program Files\Steam.exe
"C:\Program Files\Steam.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4124

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Steam.exe

Path C:\Program Files\Steam.exe
Size 817KB
SHA256 1ebe91ec32dacea8ef90ae7ed4f39676bf8e3c7edcaeb48f650e5113a461ab79
MD5 378eb13bd95adfd95059e8b3daeea422
SHA1 e1d14a280036b0be8fa7a795032436ec921e9d6a
SHA512 61d2dd9b74f811a91dc3ecce90f9d4390ecbba78cc51845de04b6d9e2ccb04697b6fbaab38133580f4dee9f39472d4e9e7162d31373d9ea8e962cb2121361e24
SSDEEP 12288:96LVgoiLGq0MGZ1f9e5q3FmO0oIsxilOW4xDuoEe51+g5:M1c5q1mjAn95meDR
TLSH
T1A705E6243F948E41E5501A3E86BE2A20D73260F2231367473B0BF7A15D45ADEED6D3DA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3080-25-0x000001B0E1C50000-0x000001B0E1C5C000-memory.dmp

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memory/4792-0-0x00000224328D0000-0x00000224329A0000-memory.dmp

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memory/4792-1-0x000002244D0D0000-0x000002244D0E0000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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