Analysis
- max time kernel
107s - max time network
111s - platform
windows10_x64 - resource
win10v20210408 - submitted
30/09/2021, 15:18
General
- Target 17f6f3213a5a5d2fb1ef8793081c5ddd.exe
- Size 60KB
- Sample210930-splwqsaac9
- SHA256 6987f229daf0e954b67d5dbf779150b3b5c8dc3e69f66fe7c41f875be7725994
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Executes dropped EXE 5 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 2 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 1 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 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\17f6f3213a5a5d2fb1ef8793081c5ddd.exe"C:\Users\Admin\AppData\Local\Temp\17f6f3213a5a5d2fb1ef8793081c5ddd.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\4123749.scr"C:\Users\Admin\AppData\Roaming\4123749.scr" /S2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\6967774.scr"C:\Users\Admin\AppData\Roaming\6967774.scr" /S2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Roaming\3931765.scr"C:\Users\Admin\AppData\Roaming\3931765.scr" /S2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\2510066.scr"C:\Users\Admin\AppData\Roaming\2510066.scr" /S2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/656-116-0x000000001BB80000-0x000000001BB82000-memory.dmp
memory/656-114-0x0000000000EF0000-0x0000000000EF1000-memory.dmp
memory/1212-157-0x0000000005620000-0x0000000005621000-memory.dmp
memory/1212-143-0x0000000000D40000-0x0000000000D41000-memory.dmp
memory/1212-176-0x00000000071F0000-0x00000000071F1000-memory.dmp
memory/1212-174-0x00000000070F0000-0x00000000070F1000-memory.dmp
memory/1212-171-0x0000000007410000-0x0000000007411000-memory.dmp
memory/1212-170-0x0000000006D10000-0x0000000006D11000-memory.dmp
memory/1212-159-0x0000000003380000-0x0000000003381000-memory.dmp
memory/1212-158-0x0000000005810000-0x0000000005811000-memory.dmp
memory/1212-150-0x0000000005820000-0x0000000005821000-memory.dmp
memory/1212-149-0x0000000000D10000-0x0000000000D11000-memory.dmp
memory/1212-148-0x00000000773C0000-0x000000007754E000-memory.dmp
memory/1212-145-0x0000000005E30000-0x0000000005E31000-memory.dmp
memory/2524-123-0x0000000000FF0000-0x0000000000FF1000-memory.dmp
memory/2524-131-0x0000000005790000-0x0000000005791000-memory.dmp
memory/2524-133-0x00000000081B0000-0x00000000081B1000-memory.dmp
memory/2884-169-0x0000000004BA0000-0x0000000004BA1000-memory.dmp
memory/2884-168-0x0000000007B30000-0x0000000007B31000-memory.dmp
memory/3064-135-0x0000000000670000-0x0000000000671000-memory.dmp
memory/3064-139-0x000000000A5F0000-0x000000000A62A000-memory.dmp
memory/3064-153-0x000000000DE90000-0x000000000DE91000-memory.dmp
memory/3064-137-0x0000000000FF0000-0x0000000000FF1000-memory.dmp
memory/3064-147-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
memory/3064-140-0x0000000002720000-0x0000000002721000-memory.dmp
memory/3968-155-0x0000000007CD0000-0x0000000007CD1000-memory.dmp
memory/3968-138-0x0000000001320000-0x000000000135F000-memory.dmp
memory/3968-124-0x0000000000A50000-0x0000000000A51000-memory.dmp
memory/3968-141-0x0000000002DE0000-0x0000000002DE1000-memory.dmp
memory/3968-146-0x0000000005410000-0x0000000005411000-memory.dmp
memory/3968-132-0x0000000001070000-0x0000000001071000-memory.dmp