Resubmissions
19/03/2024, 18:11
240319-wsv6csag29903/03/2024, 11:21
240303-nf56sshf9v903/03/2024, 11:15
240303-ncwg7aaa939Analysis
- max time kernel
161s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/03/2024, 11:21
General
- Target o_0/loader.exe
- Size 4.1MB
- Sample240303-nf56sshf9v
- SHA256 60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Themida packer 12 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe"C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\certutil.execertutil -hashfile "C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe" MD53⤵
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C:\Windows\system32\find.exefind /i /v "md5"3⤵
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C:\Windows\system32\find.exefind /i /v "certutil"3⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4816-0-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-1-0x00007FFA53970000-0x00007FFA53B65000-memory.dmp
memory/4816-2-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-3-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-4-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-5-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-6-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-7-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-8-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-9-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-10-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-12-0x00007FFA53970000-0x00007FFA53B65000-memory.dmp
memory/4816-14-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp
memory/4816-15-0x00007FF756A60000-0x00007FF7574FF000-memory.dmp