Analysis
- max time kernel
149s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
01/06/2026, 14:11
General
- Target tmpa_igs4bf.exe
- Size 16.7MB
- Sample260601-rhmc9ae18x
- SHA256 c36338fbc2b1913fd79443706dedbc9f58adcfaf5af1dab06a592446e8f6dec6
Malware Config
Extracted
-
hijackloader
-
directory
%APPDATA%\Gx_reader
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inject_dll
%windir%\SysWOW64\pla.dll
Signatures
- Family: HijackLoader, IDAT loader, Ghostulse,
HijackLoader is a multi-stage loader, first seen in 2023.
- Detects HijackLoader (aka IDAT Loader) 1 IoCs
- Badlisted process makes network request 9 IoCs
Network request originating from process or tool commonly abused by malware.
- Executes dropped EXE 9 IoCs
- Loads dropped DLL 10 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\tmpa_igs4bf.exe"C:\Users\Admin\AppData\Local\Temp\tmpa_igs4bf.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\{F398A64B-8374-44EA-801E-4934484049C7}\tmpa_igs4bf.exeC:\Users\Admin\AppData\Local\Temp\{F398A64B-8374-44EA-801E-4934484049C7}\tmpa_igs4bf.exe -package:"C:\Users\Admin\AppData\Local\Temp\tmpa_igs4bf.exe" -no_selfdeleter -IS_temp -media_path:"C:\Users\Admin\AppData\Local\Temp\{F398A64B-8374-44EA-801E-4934484049C7}\Disk1\" -tempdisk1folder:"C:\Users\Admin\AppData\Local\Temp\{F398A64B-8374-44EA-801E-4934484049C7}\" -IS_OriginalLauncher:"C:\Users\Admin\AppData\Local\Temp\{F398A64B-8374-44EA-801E-4934484049C7}\Disk1\tmpa_igs4bf.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{6B132752-3C81-4E26-A0F4-0BF2D4BD81EB}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{4B2B7AD5-5B9D-4B3E-B990-1DA3F96F103F}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{3F49D878-841D-4F7B-995A-B46D4AB6C3A9}3⤵
- Executes dropped EXE
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-
C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{2AD10787-8E9E-4BE8-8184-AA33D9BB4EAE}3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{7753BBB9-DC30-4892-AAC9-43EF0643C2DF}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{80DCB614-E366-4306-ABEF-8FFDBD7E2856}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\{E9933E17-B86A-4C0C-96B5-4ABDCF75C064}\Ahnenblatt4.exeC:\Users\Admin\AppData\Local\Temp\{451BCE2F-8BE6-435E-9B39-BCB412B27FCC}\{E9933E17-B86A-4C0C-96B5-4ABDCF75C064}\Ahnenblatt4.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Gx_reader\Ahnenblatt4.exeC:\Users\Admin\AppData\Roaming\Gx_reader\Ahnenblatt4.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\SysWOW64\cmd.exe5⤵
- Badlisted process makes network request
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
2521dd58
ISBEW64.exe
Ahnenblatt4.exe
BORLNDMM.DLL
CC32290MT.DLL
DIFxData.ini
FontData.ini
_isres_0x0409.dll
_isuser_0x0409.dll
alternator.ods
cabochon.ogg
isrt.dll
setup.inx
0x0409.ini
ISSetup.dll
data1.cab
data1.hdr
layout.bin
setup.ini
tmpa_igs4bf.exe
memory/3404-94-0x0000000010000000-0x0000000010114000-memory.dmp
memory/3404-162-0x00000000025F0000-0x00000000025F2000-memory.dmp
memory/3404-100-0x00000000037F0000-0x00000000039B7000-memory.dmp
memory/3404-95-0x00000000025F0000-0x00000000025F2000-memory.dmp
memory/3652-167-0x0000000072F60000-0x0000000073078000-memory.dmp
memory/3652-166-0x0000000073080000-0x000000007309C000-memory.dmp
memory/3652-153-0x00000000003A0000-0x0000000002117000-memory.dmp
memory/3652-160-0x00007FFA71200000-0x00007FFA71409000-memory.dmp
memory/3652-159-0x0000000073250000-0x00000000733CD000-memory.dmp
memory/3652-163-0x0000000073250000-0x00000000733CD000-memory.dmp
memory/3724-169-0x00007FFA71200000-0x00007FFA71409000-memory.dmp
memory/3724-171-0x0000000071F30000-0x0000000073247000-memory.dmp
memory/3724-172-0x0000000073250000-0x00000000733CD000-memory.dmp
memory/3724-173-0x0000000071F30000-0x0000000073247000-memory.dmp
memory/4056-156-0x0000000073E90000-0x0000000073FA8000-memory.dmp
memory/4056-140-0x00007FFA71200000-0x00007FFA71409000-memory.dmp
memory/4056-136-0x00000000004C0000-0x0000000002237000-memory.dmp
memory/4056-139-0x0000000073250000-0x00000000733CD000-memory.dmp
memory/4056-155-0x0000000074100000-0x000000007411C000-memory.dmp