Analysis
- max time kernel
70s - max time network
104s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
18/02/2023, 09:17
General
- Target Setup.exe
- Size 7.0MB
- Sample230218-k82sasbb91
- SHA256 37b90013b2b05efd0ff943fb6b3173bc802d5cc7eb0d24801ee5c298f30b5b3d
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Downloads MZ/PE file
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 16 IoCs
Detects Themida, an advanced Windows software protection system.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Setup.exe"C:\Users\Admin\AppData\Local\Temp\Setup.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\E0cu25Ea.exe"C:\Users\Admin\AppData\Roaming\E0cu25Ea.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\regid.1991-06.com.microsoftssh-type1.7.8.9\regid.1991-06.com.microsoftssh-type1.7.8.9.exe"C:\ProgramData\regid.1991-06.com.microsoftssh-type1.7.8.9\regid.1991-06.com.microsoftssh-type1.7.8.9.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
-
-
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C:\Users\Admin\AppData\Roaming\tRjQ0Kgq.exe"C:\Users\Admin\AppData\Roaming\tRjQ0Kgq.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
regid.1991-06.com.microsoftssh-type1.7.8.9.exe
regid.1991-06.com.microsoftssh-type1.7.8.9.exe
mozglue.dll
nss3.dll
sqlite3.dll
E0cu25Ea.exe
E0cu25Ea.exe
tRjQ0Kgq.exe
tRjQ0Kgq.exe
memory/1072-147-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1072-151-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1072-156-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1072-145-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1072-152-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1072-150-0x00007FF7268F0000-0x00007FF727984000-memory.dmp
memory/1656-161-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/1656-163-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/1656-162-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/1656-164-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/1656-158-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/1656-157-0x00007FF6C5C10000-0x00007FF6C6CA4000-memory.dmp
memory/4052-132-0x0000000000400000-0x0000000000F1F000-memory.dmp
memory/4052-134-0x0000000000400000-0x0000000000F1F000-memory.dmp
memory/4052-138-0x0000000000400000-0x0000000000F1F000-memory.dmp
memory/4052-146-0x0000000000400000-0x0000000000F1F000-memory.dmp