Analysis
- max time kernel
148s - max time network
129s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
30/09/2026, 14:57
Behavioral task
behavioral1
Sample
kisa.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
kisa.exe
Resource
win11ltsc2024-20260911-en
General
- Target kisa.exe
- Size 1.1MB
- Sample260930-sbmacat1as
- SHA256 66cd6867af5a3c076f82ee2835039367abf76f73828e80a713ab43851a2bd676
- MD5 57acb33cfab449a6e1a18e8f34a1cc9a
- SHA1 888343d10132c2315e4fcf3d090c9fb890ec6070
- SHA512 23f7f64ec8006263d38dfadbfc9dee073d5bf96130907ed210377c8e9aa5d67d28d8ebf12fd85b161f42fa8ad2e09a846c11e9fdcc163d0f09be620bdcafe828
- SSDEEP 24576:4YbWXSHwEwqeDqjWQcyc/jsCCBNwRQOrMwy0pwz:4YbWXSQEwfDq8y6jqNI1y0py
- TLSH T1A135335E34A264C3E747DA77F8669B2CA8EC7868C740FB3AC3D86EE1D406B20615D345
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Detects DonutLoader 2 IoCs
resource yara_rule behavioral2/memory/4180-1-0x0000000000920000-0x0000000000A34000-memory.dmp family_donutloader behavioral2/memory/4180-24-0x000000001BF00000-0x000000001C14B000-memory.dmp family_donutloader - Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 3304 powershell.exe 5988 powershell.exe 5060 powershell.exe - Creates a file in the Startup directory 1 TTPs 1 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Repair.lnk kisa.exe - Executes dropped EXE 2 IoCs
pid Process 4884 CoreWorker_kVWUPGNUOYvPizT.exe 4192 CoreWorker_kVWUPGNUOYvPizT.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\CoreWorker_kVWUPGNUOYvPizT = "C:\\Users\\Admin\\AppData\\Local\\MpDefenderCoreFolder\\CoreWorker_kVWUPGNUOYvPizT.exe" kisa.exe Set value (str) \REGISTRY\USER\S-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\CoreWorker_kVWUPGNUOYvPizT = "C:\\Users\\Admin\\AppData\\Local\\MpDefenderCoreFolder\\CoreWorker_kVWUPGNUOYvPizT.exe" CoreWorker_kVWUPGNUOYvPizT.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CoreWorker_kVWUPGNUOYvPizT = "C:\\Users\\Admin\\AppData\\Local\\MpDefenderCoreFolder\\CoreWorker_kVWUPGNUOYvPizT.exe" CoreWorker_kVWUPGNUOYvPizT.exe - Enumerates connected drives 3 TTPs 3 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
ioc Process \??\F:\ powershell.exe \??\F:\ powershell.exe \??\F:\ powershell.exe - Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 ip-api.com - Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 4 IoCs
pid Process 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 2696 cmd.exe 3176 cmd.exe - 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.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain kisa.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname kisa.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 kisa.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier kisa.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe 4180 kisa.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4180 kisa.exe Token: SeDebugPrivilege 3304 powershell.exe Token: SeIncreaseQuotaPrivilege 3304 powershell.exe Token: SeSecurityPrivilege 3304 powershell.exe Token: SeTakeOwnershipPrivilege 3304 powershell.exe Token: SeLoadDriverPrivilege 3304 powershell.exe Token: SeSystemProfilePrivilege 3304 powershell.exe Token: SeSystemtimePrivilege 3304 powershell.exe Token: SeProfSingleProcessPrivilege 3304 powershell.exe Token: SeIncBasePriorityPrivilege 3304 powershell.exe Token: SeCreatePagefilePrivilege 3304 powershell.exe Token: SeBackupPrivilege 3304 powershell.exe Token: SeRestorePrivilege 3304 powershell.exe Token: SeShutdownPrivilege 3304 powershell.exe Token: SeDebugPrivilege 3304 powershell.exe Token: SeSystemEnvironmentPrivilege 3304 powershell.exe Token: SeRemoteShutdownPrivilege 3304 powershell.exe Token: SeUndockPrivilege 3304 powershell.exe Token: SeManageVolumePrivilege 3304 powershell.exe Token: 33 3304 powershell.exe Token: 34 3304 powershell.exe Token: 35 3304 powershell.exe Token: 36 3304 powershell.exe Token: SeDebugPrivilege 4884 CoreWorker_kVWUPGNUOYvPizT.exe Token: SeDebugPrivilege 4884 CoreWorker_kVWUPGNUOYvPizT.exe Token: SeDebugPrivilege 5060 powershell.exe Token: SeDebugPrivilege 5988 powershell.exe Token: SeIncreaseQuotaPrivilege 5988 powershell.exe Token: SeSecurityPrivilege 5988 powershell.exe Token: SeTakeOwnershipPrivilege 5988 powershell.exe Token: SeLoadDriverPrivilege 5988 powershell.exe Token: SeSystemProfilePrivilege 5988 powershell.exe Token: SeSystemtimePrivilege 5988 powershell.exe Token: SeProfSingleProcessPrivilege 5988 powershell.exe Token: SeIncBasePriorityPrivilege 5988 powershell.exe Token: SeCreatePagefilePrivilege 5988 powershell.exe Token: SeBackupPrivilege 5988 powershell.exe Token: SeRestorePrivilege 5988 powershell.exe Token: SeShutdownPrivilege 5988 powershell.exe Token: SeDebugPrivilege 5988 powershell.exe Token: SeSystemEnvironmentPrivilege 5988 powershell.exe Token: SeRemoteShutdownPrivilege 5988 powershell.exe Token: SeUndockPrivilege 5988 powershell.exe Token: SeManageVolumePrivilege 5988 powershell.exe Token: 33 5988 powershell.exe Token: 34 5988 powershell.exe Token: 35 5988 powershell.exe Token: 36 5988 powershell.exe Token: SeIncreaseQuotaPrivilege 5060 powershell.exe Token: SeSecurityPrivilege 5060 powershell.exe Token: SeTakeOwnershipPrivilege 5060 powershell.exe Token: SeLoadDriverPrivilege 5060 powershell.exe Token: SeSystemProfilePrivilege 5060 powershell.exe Token: SeSystemtimePrivilege 5060 powershell.exe Token: SeProfSingleProcessPrivilege 5060 powershell.exe Token: SeIncBasePriorityPrivilege 5060 powershell.exe Token: SeCreatePagefilePrivilege 5060 powershell.exe Token: SeBackupPrivilege 5060 powershell.exe Token: SeRestorePrivilege 5060 powershell.exe Token: SeShutdownPrivilege 5060 powershell.exe Token: SeDebugPrivilege 5060 powershell.exe Token: SeSystemEnvironmentPrivilege 5060 powershell.exe Token: SeRemoteShutdownPrivilege 5060 powershell.exe Token: SeUndockPrivilege 5060 powershell.exe - Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4180 wrote to memory of 4808 4180 kisa.exe 89 PID 4180 wrote to memory of 3124 4180 kisa.exe 90 PID 4180 wrote to memory of 4808 4180 kisa.exe 89 PID 4180 wrote to memory of 3124 4180 kisa.exe 90 PID 4180 wrote to memory of 3176 4180 kisa.exe 94 PID 3176 wrote to memory of 3304 3176 cmd.exe 96 PID 4180 wrote to memory of 4884 4180 kisa.exe 98 PID 4884 wrote to memory of 5060 4884 CoreWorker_kVWUPGNUOYvPizT.exe 99 PID 4884 wrote to memory of 2696 4884 CoreWorker_kVWUPGNUOYvPizT.exe 101 PID 2696 wrote to memory of 5988 2696 cmd.exe 104
Processes
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C:\Users\Admin\AppData\Local\Temp\kisa.exe"C:\Users\Admin\AppData\Local\Temp\kisa.exe"1⤵
- Creates a file in the Startup directory
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4180 -
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:4808
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"2⤵PID:3124
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c powershell -C "Add-MpPreference -ExclusionExtension '.exe' -EA 0"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3176 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -C "Add-MpPreference -ExclusionExtension '.exe' -EA 0"3⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
PID:3304
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C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe"C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4884 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command " $action = New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe' $trigger = New-ScheduledTaskTrigger -AtLogOn Register-ScheduledTask -Action $action -Trigger $trigger -TaskName 'CoreWorker_kVWUPGNUOYvPizT-8218' -RunLevel Highest "3⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
PID:5060
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder'"3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\MpDefenderCoreFolder'"4⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
PID:5988
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C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵PID:3756
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C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"1⤵PID:2604
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C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exeC:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe1⤵
- Executes dropped EXE
PID:4192
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 95d800beb83751fe5d74e6f83e7c37e8dabfa27d2df83bee899021cb11de0b5b
- MD5 fcd2014bd3cdf25bb3fcde517d474266
- SHA1 b5a4aaf57434a57953af83f868824b92b5139936
- SHA512 e8bb80d28ef531fb920d455e304314bed73d8e6468f51ce59c4764fc8c6196c571a295dc99a59666d8a0fe8b16dd6604f6b2d072f0b5537f29e1611e7dfda435
- TLSH T131216837B3DD8624C89E413A10CDAD1036B6CBDB40DECE9B7B84E655A43F699CE61060
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 e56f4a38e0c60f0196c589e1952198368a10927e65ff24d1476ffafc489657f4
- MD5 78b9021e0576c01ec958b87ec52832c1
- SHA1 76df758d602c2d4cc4a4bfa0f3b435cae1ed3ffa
- SHA512 4402163ed9623a392f120417ea0b5049bf0d76b88dd7f4fc70428ef7e76601f25bd534ae916ed9daba859fb6308d6f370712985ccd165f6393dbce7c5c507514
- TLSH T11F216833F3DD8614C89A413A10CDAC1036B6C7DB41DECFAB7B84E655A43F699CE61160
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\MpDefenderCoreFolder\CoreWorker_kVWUPGNUOYvPizT.exe
- Size 13KB
- SHA256 5428a612d41663ce5761d29bef169daf2a625f694cc41cc0de3c4f784e80c3ea
- MD5 681d6b40295d08bf31b2880e40ac8fca
- SHA1 ad716d323b93778085a78ece7324052d063ab76a
- SHA512 061e4eed921af77a0634f6bcb1b96ebc7f4820c56b675a80703bd980c87a1324a58ac65d7725dd83bea1dd60a70757d16e5d8c48b22c007189fec9660446e7df
- SSDEEP 192:laEDneAFtPoP5t7pYl/M/MmBvHUrmbQSaZxGKxOkhE5QfRDTQMW7vm:cEnJ05VOl/A5HUrmbQSgxLQRCfxfW7v
- TLSH T19E520904B3E08236EDBA57759EBA45111A73FB165932CE1E14CC51CF0F27284ACD2FA6
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_whaw0t0c.n2c.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- TLSH T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
- MD5 SHA1 SHA512 TLSH