Analysis
- user interaction
yes - max time kernel
44s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
01/05/2026, 18:16
General
- Target setup.exe
- Size 4.4MB
- Sample260501-wwhdnsaz21
- SHA256 34b686bac4c1bf52cfa5df1489257ea878d4d214cade5d2cdbdfa8e91a96cb65
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 11 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- 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.
- Inno Setup is an open-source installation builder for Windows applications. 2 IoCs
Inno Setup installer
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-BMCRS.tmp\setup.tmp"C:\Users\Admin\AppData\Local\Temp\is-BMCRS.tmp\setup.tmp" /SL5="$50264,3987876,140800,C:\Users\Admin\AppData\Local\Temp\setup.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-3IQP0.tmp\FlushFileCache.exe"C:\Users\Admin\AppData\Local\Temp\is-3IQP0.tmp\FlushFileCache.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
BASS.dll
CLS.ini
CallbackCtrl.dll
FlushFileCache.exe
ISDone.dll
MusicButton.png
botva2.dll
idp.dll
innocallback.dll
wintb.dll
setup.tmp
memory/3116-145-0x0000000000400000-0x0000000000410000-memory.dmp
memory/3280-94-0x0000000005EC0000-0x0000000005ECF000-memory.dmp
memory/3280-90-0x0000000002B50000-0x0000000002B65000-memory.dmp
memory/3280-71-0x0000000011000000-0x000000001104C000-memory.dmp
memory/3280-80-0x0000000005EC0000-0x0000000005ECF000-memory.dmp
memory/3280-51-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-7-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-159-0x0000000002B70000-0x0000000002BD5000-memory.dmp
memory/3280-87-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-155-0x000000000AC60000-0x000000000B09B000-memory.dmp
memory/3280-92-0x000000006B080000-0x000000006B08D000-memory.dmp
memory/3280-22-0x0000000002B50000-0x0000000002B65000-memory.dmp
memory/3280-93-0x0000000011000000-0x000000001104C000-memory.dmp
memory/3280-91-0x0000000002B70000-0x0000000002BD5000-memory.dmp
memory/3280-70-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-95-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-29-0x0000000002B70000-0x0000000002BD5000-memory.dmp
memory/3280-150-0x0000000002B50000-0x0000000002B65000-memory.dmp
memory/3280-13-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-146-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-147-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-149-0x0000000000400000-0x0000000000579000-memory.dmp
memory/3280-154-0x0000000005EC0000-0x0000000005ECF000-memory.dmp
memory/3280-151-0x0000000002B70000-0x0000000002BD5000-memory.dmp
memory/5112-1-0x0000000000400000-0x000000000042D000-memory.dmp
memory/5112-88-0x0000000000400000-0x000000000042D000-memory.dmp
memory/5112-0-0x000000000041E000-0x000000000041F000-memory.dmp