Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
27/05/2026, 13:54
Behavioral task
behavioral1
Sample
h5ihvevlmk6olb0m.exe
Resource
win10v2004-20260513-en
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
h5ihvevlmk6olb0m.exe
Resource
win11-20260513-en
14 signatures
150 seconds
General
- Target h5ihvevlmk6olb0m.exe
- Size 52KB
- Sample260527-q7j4rag16w
- SHA256 04d92873db6dbdcde06cb4acacb5716784e149b1d293cb8fb15341b9be5c38d6
- MD5 1dc9143d2cf10a3c124785c5e3a81cc5
- SHA1 e760608515043d6b397f5592f3c9c952097ad3c7
- SHA512 db27863d1f500f8667b5b750da945ccc101ad7f0354ac40e5d74b145b000bdba169328ec4a6cd8b88a6776a07697efbc908579dc3db0f4b4b681a7cdfacabe3c
- SSDEEP 1536:WA3k/TZF90EWGzzU5mSObnNAUb/+mUIb:WAIF90QzzUQSObnNAUb/+k
- TLSH T1063328087784AA91D6BF0AF9EF1373508377D5475942E70F1ECA80C12E6B3DA9849CE6
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
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sheetrat
Attributes
-
anti_virtual
false
-
certificate
ayondyeh21pl4oqy
-
exclusion_wd
true
-
hidden_file
true
-
key
vdwjpdv92h3uyaxtvugbqlt5
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path_client
%Windows%\Search.exe
-
path_watch_dog
2te&e5
-
pump
false
-
rootkit
false
-
task_client
ShellHost
-
task_watch_dog
ai_wfq+$t6oh$2
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use_install_admin
true
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user_init
true
Signatures
- Detects Sheetrat Payload 2 IoCs
Sheetrat aka NonEuclid RAT is a trojan written in C#.
resource yara_rule behavioral2/memory/5208-0-0x0000021121720000-0x0000021121734000-memory.dmp family_sheetrat_v1 behavioral2/files/0x001a00000002b5f6-6.dat family_sheetrat_v1 - Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\Search.exe" h5ihvevlmk6olb0m.exe - Executes dropped EXE 3 IoCs
pid Process 6004 Search.exe 4336 Search.exe 6064 Search.exe - Looks up external IP address via web service 5 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 12 api.ipify.org 13 api.ipify.org 27 api.ipify.org - Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\System32\NULCD cmd.exe - Drops file in Windows directory 5 IoCs
description ioc Process File created C:\Windows\Search.exe h5ihvevlmk6olb0m.exe File opened for modification C:\Windows\Search.exe h5ihvevlmk6olb0m.exe File opened for modification C:\Windows\Search.exe Search.exe File opened for modification C:\Windows\Search.exe Search.exe File opened for modification C:\Windows\Search.exe Search.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Delays execution with timeout.exe 1 IoCs
pid Process 1648 timeout.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ h5ihvevlmk6olb0m.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5836 schtasks.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 5208 h5ihvevlmk6olb0m.exe Token: SeDebugPrivilege 6004 Search.exe Token: SeDebugPrivilege 4336 Search.exe Token: SeIncBasePriorityPrivilege 6004 Search.exe Token: SeDebugPrivilege 6064 Search.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 5208 wrote to memory of 5572 5208 h5ihvevlmk6olb0m.exe 85 PID 5208 wrote to memory of 5580 5208 h5ihvevlmk6olb0m.exe 86 PID 5580 wrote to memory of 5836 5580 cmd.exe 89 PID 5208 wrote to memory of 4336 5208 h5ihvevlmk6olb0m.exe 93 PID 6004 wrote to memory of 4136 6004 Search.exe 98 PID 4136 wrote to memory of 4204 4136 CMD.exe 100 PID 6004 wrote to memory of 2852 6004 Search.exe 101 PID 2852 wrote to memory of 1648 2852 cmd.exe 103 - 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.
Processes
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C:\Users\Admin\AppData\Local\Temp\h5ihvevlmk6olb0m.exe"C:\Users\Admin\AppData\Local\Temp\h5ihvevlmk6olb0m.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5208 -
C:\Windows\SYSTEM32\CMD.exe"CMD" netsh advfirewall firewall add rule name="%HaWZ"kmZawbZe" dir=in action=allow program="C:\Windows\Search.exe" enable=yes & exit2⤵PID:5572
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Windows\Search.exe" /RL HIGHEST & exit2⤵
- Suspicious use of WriteProcessMemory
PID:5580 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 1 /tn "ShellHost" /tr "C:\Windows\Search.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
PID:5836
-
-
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C:\Windows\Search.exe"C:\Windows\Search.exe"2⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4336
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C:\Windows\Search.exeC:\Windows\Search.exe1⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6004 -
C:\Windows\system32\CMD.exe"CMD" /c schtasks /deleTe /F /Tn "ShellHost" & exit& exit2⤵
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\system32\schtasks.exeschtasks /deleTe /F /Tn "ShellHost"3⤵PID:4204
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7E5E.tmp.bat""2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Windows\system32\timeout.exetimeout 10 "C:\Windows"DEL "Search.exe" /f /qCD "C:\Users\Admin\AppData\Local\Temp"DEL "tmp7E5E.tmp.bat" /f /q3⤵
- Delays execution with timeout.exe
PID:1648
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C:\Windows\Search.exeC:\Windows\Search.exe1⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:6064
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Search.exe.log
- Size 1KB
- SHA256 8b410de677f095f88c42c69c716a9383b94ceb86ca90666188fcd4f4df7fc9fa
- MD5 5dd6ecdc4507cc0f897cded9ebeb94b4
- SHA1 afd42365a5a8fa71f506a3d34960f8ed459cfd86
- SHA512 078e5c9b8062420ef2c3a3a816961e957b0daa7f7a2ecd92689d0399febda98a0c727d1cd9b286adce1c132b9efbd383179867cc494831d4679d9e3805d51a06
- TLSH T14011AB722371B1D489163F43295C568827FF4319B550EE0CBAA8B21ED82B41B6F322F3
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp7E5E.tmp.bat
- Size 118B
- SHA256 c33be1672c6a1d8152d728c847f91bca75cc9d1a45843b55e810b618334e768d
- MD5 c44f62814bf8837265f282d934197881
- SHA1 7c61f2142ddc8ba7f61badfa018adefc5c0c17a4
- SHA512 da53dbe517665cf85a9f2421ac9bf253cb6ab18ab0c76e126d7e641008cffe0530edfa4020ae40c2fee8882af84b179f48535b105183eb075343457b8efcc26d
- TLSH T124B01216F5924F4A281B660750BE0ABC409FCC1DFFC45B24036CC8053890C2DEDAB38C
- MD5 SHA1 SHA512 TLSH
- Path C:\Windows\Search.exe
- Size 52KB
- SHA256 04d92873db6dbdcde06cb4acacb5716784e149b1d293cb8fb15341b9be5c38d6
- MD5 1dc9143d2cf10a3c124785c5e3a81cc5
- SHA1 e760608515043d6b397f5592f3c9c952097ad3c7
- SHA512 db27863d1f500f8667b5b750da945ccc101ad7f0354ac40e5d74b145b000bdba169328ec4a6cd8b88a6776a07697efbc908579dc3db0f4b4b681a7cdfacabe3c
- SSDEEP 1536:WA3k/TZF90EWGzzU5mSObnNAUb/+mUIb:WAIF90QzzUQSObnNAUb/+k
- TLSH T1063328087784AA91D6BF0AF9EF1373508377D5475942E70F1ECA80C12E6B3DA9849CE6
- MD5 SHA1 SHA512 SSDEEP TLSH