Analysis
- max time kernel
154s - max time network
185s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
30/01/2022, 15:01
General
- Target 92717c8ecbf6524a9fefb57a346872292daa2132aeb492ccf725208474ad9179.exe
- Size 459KB
- Sample220130-sdznfsddh9
- SHA256 92717c8ecbf6524a9fefb57a346872292daa2132aeb492ccf725208474ad9179
Malware Config
Signatures
- CrimsonRAT Main Payload 2 IoCs
- CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Modifies registry class 1 IoCs
- Suspicious behavior: AddClipboardFormatListener 2 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\92717c8ecbf6524a9fefb57a346872292daa2132aeb492ccf725208474ad9179.exe"C:\Users\Admin\AppData\Local\Temp\92717c8ecbf6524a9fefb57a346872292daa2132aeb492ccf725208474ad9179.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Bhithoas\rwlbmarivs.exe"C:\ProgramData\Bhithoas\rwlbmarivs.exe"2⤵
- Executes dropped EXE
-
-
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\92717c8ecbf6524a9fefb57a346872292daa2132aeb492ccf725208474ad9179_02 .docx" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/516-123-0x0000021E9FA80000-0x0000021E9FA82000-memory.dmp
memory/516-122-0x0000021E84AF0000-0x0000021E85498000-memory.dmp
memory/1456-131-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp
memory/1456-125-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-126-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-127-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-130-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-132-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp
memory/1456-124-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-379-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-380-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-381-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/1456-382-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3136-118-0x00000000028D0000-0x00000000028D2000-memory.dmp