Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
06/07/2026, 08:10
General
- Target 58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe
- Size 7.6MB
- Sample260706-j2wr2abz21
- SHA256 58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b
Malware Config
Extracted
-
hijackloader
-
directory
%APPDATA%\systemFast_BYY
-
inject_dll
%windir%\SysWOW64\pla.dll
Signatures
- Family: DeerStealer
DeerStealer is a sophisticated information stealer written in C++.
- Family: HijackLoader, IDAT loader, Ghostulse,
HijackLoader is a multi-stage loader, first seen in 2023.
- Detects DeerStealer 10 IoCs
- Detects HijackLoader (aka IDAT Loader) 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 19 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 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 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe"C:\Users\Admin\AppData\Local\Temp\58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\TransmitterDe.exe"C:\Users\Admin\AppData\Local\Temp\TransmitterDe.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\systemFast_BYY\TransmitterDe.exeC:\ProgramData\systemFast_BYY\TransmitterDe.exe3⤵
- 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
-
C:\Users\Admin\SSimulator.exeC:\Users\Admin\SSimulator.exe4⤵
- Loads dropped DLL
-
-
C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe"C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe" "C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe" /u4⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
1353E8D.tmp
Creltemloug.fzd
E421F99.tmp
MSVCP140.dll
Qt5Core.dll
Qt5Gui.dll
Qt5Widgets.dll
TransmitterDe.exe
VCRUNTIME140.dll
Vit.ybx
tier0.dll
SSimulator.exe
memory/1148-44-0x0000000073360000-0x00000000734DB000-memory.dmp
memory/1148-45-0x00007FFD85110000-0x00007FFD85305000-memory.dmp
memory/3500-94-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-97-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-102-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-100-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-85-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-90-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-92-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-98-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-95-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/3500-96-0x00007FF675A80000-0x00007FF675D76000-memory.dmp
memory/4960-77-0x00007FFD85110000-0x00007FFD85305000-memory.dmp
memory/4960-76-0x0000000074760000-0x00000000748DB000-memory.dmp
memory/4960-79-0x0000000074760000-0x00000000748DB000-memory.dmp
memory/4960-83-0x0000000074760000-0x00000000748DB000-memory.dmp