Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
01/06/2026, 14:11
General
- Target tmpa_igs4bf.exe
- Size 16.7MB
- Sample260601-rhmc9ae18x
- SHA256 c36338fbc2b1913fd79443706dedbc9f58adcfaf5af1dab06a592446e8f6dec6
Malware Config
Extracted
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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 7 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\{CB6CD23E-37C5-436D-A7E5-3E94C47D7F9C}\tmpa_igs4bf.exeC:\Users\Admin\AppData\Local\Temp\{CB6CD23E-37C5-436D-A7E5-3E94C47D7F9C}\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\{CB6CD23E-37C5-436D-A7E5-3E94C47D7F9C}\Disk1\" -tempdisk1folder:"C:\Users\Admin\AppData\Local\Temp\{CB6CD23E-37C5-436D-A7E5-3E94C47D7F9C}\" -IS_OriginalLauncher:"C:\Users\Admin\AppData\Local\Temp\{CB6CD23E-37C5-436D-A7E5-3E94C47D7F9C}\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\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{E6A03F8D-5A6A-449B-BEC6-FD253852AC26}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{D4DC88A6-D27C-4A54-BDC7-8EF607BAD122}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{3A847C77-6653-449C-AE37-A4054CB1D5C5}3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{17AA80D1-AF9F-41EE-BCD6-B871710C934A}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{225404E8-A359-48C3-8B33-5BF06B02E69F}3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\ISBEW64.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{31AD81B6-AE93-4D15-B7AE-16F12142C4CF}3⤵
- Executes dropped EXE
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-
C:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\{E9933E17-B86A-4C0C-96B5-4ABDCF75C064}\Ahnenblatt4.exeC:\Users\Admin\AppData\Local\Temp\{1CF450CC-F8E8-4C28-B7BB-B519C72761A6}\{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
563315b5
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
tmpa_igs4bf.exe
setup.ini
memory/2056-171-0x0000000073A70000-0x0000000074CC4000-memory.dmp
memory/2056-173-0x0000000073A70000-0x0000000074CC4000-memory.dmp
memory/2056-172-0x0000000073010000-0x000000007318B000-memory.dmp
memory/2056-169-0x00007FFF9A750000-0x00007FFF9A945000-memory.dmp
memory/2584-94-0x0000000010000000-0x0000000010114000-memory.dmp
memory/2584-95-0x0000000002D70000-0x0000000002D72000-memory.dmp
memory/2584-100-0x0000000003F00000-0x00000000040C7000-memory.dmp
memory/2584-162-0x0000000002D70000-0x0000000002D72000-memory.dmp
memory/2736-140-0x00007FFF9A750000-0x00007FFF9A945000-memory.dmp
memory/2736-160-0x0000000073C20000-0x0000000073D38000-memory.dmp
memory/2736-159-0x0000000073E30000-0x0000000073E4C000-memory.dmp
memory/2736-136-0x00000000004D0000-0x0000000002247000-memory.dmp
memory/2736-139-0x0000000073010000-0x000000007318B000-memory.dmp
memory/4128-163-0x0000000073010000-0x000000007318B000-memory.dmp
memory/4128-166-0x0000000072E20000-0x0000000072E3C000-memory.dmp
memory/4128-167-0x0000000072D00000-0x0000000072E18000-memory.dmp
memory/4128-157-0x0000000073010000-0x000000007318B000-memory.dmp
memory/4128-158-0x00007FFF9A750000-0x00007FFF9A945000-memory.dmp
memory/4128-154-0x0000000000A10000-0x0000000002787000-memory.dmp