Analysis
- max time kernel
150s - max time network
150s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
06/01/2022, 02:41
General
- Target e2235a813cb871f2156148c7fc13489f.doc
- Size 140KB
- Sample220106-c6f4tabccq
- SHA256 6f40028f8cc674a39ca5564371ec08400e09c0f04cb55dba2f2791292e80920c
Malware Config
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Executes dropped EXE 2 IoCs
- Suspicious use of SetThreadContext 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
- Suspicious behavior: AddClipboardFormatListener 2 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 10 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\e2235a813cb871f2156148c7fc13489f.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\HLSGP.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\HLSGP.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwADsAUwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMQAwAA==3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\RegAsm.exeC:\Users\Admin\AppData\Local\Temp\RegAsm.exe3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1048-314-0x0000000005890000-0x0000000005891000-memory.dmp
memory/1048-315-0x0000000005EA0000-0x000000000639E000-memory.dmp
memory/1048-311-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1048-317-0x0000000005B00000-0x0000000005B66000-memory.dmp
memory/1048-312-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1048-313-0x00000000057D0000-0x000000000586C000-memory.dmp
memory/2508-121-0x0000017CDFD40000-0x0000017CDFD42000-memory.dmp
memory/2508-115-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp
memory/2508-118-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp
memory/2508-119-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp
memory/2508-122-0x0000017CDFD40000-0x0000017CDFD42000-memory.dmp
memory/2508-117-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp
memory/2508-116-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp
memory/2508-120-0x0000017CDFD40000-0x0000017CDFD42000-memory.dmp
memory/2924-281-0x0000000006E50000-0x0000000006EB6000-memory.dmp
memory/2924-282-0x0000000004460000-0x0000000004461000-memory.dmp
memory/2924-283-0x0000000004462000-0x0000000004463000-memory.dmp
memory/2924-284-0x0000000007790000-0x0000000007AE0000-memory.dmp
memory/2924-285-0x0000000007B00000-0x0000000007B1C000-memory.dmp
memory/2924-286-0x0000000007B20000-0x0000000007B6B000-memory.dmp
memory/2924-287-0x0000000007E50000-0x0000000007EC6000-memory.dmp
memory/2924-301-0x0000000009670000-0x0000000009CE8000-memory.dmp
memory/2924-302-0x0000000008C20000-0x0000000008C3A000-memory.dmp
memory/2924-304-0x0000000004463000-0x0000000004464000-memory.dmp
memory/2924-280-0x00000000074F0000-0x0000000007556000-memory.dmp
memory/2924-277-0x0000000000E80000-0x0000000000EB6000-memory.dmp
memory/2924-279-0x0000000006D60000-0x0000000006D82000-memory.dmp
memory/2924-278-0x0000000006EC0000-0x00000000074E8000-memory.dmp
memory/3628-306-0x00000000014C0000-0x0000000001552000-memory.dmp
memory/3628-305-0x00000000055E0000-0x0000000005640000-memory.dmp
memory/3628-265-0x0000000005550000-0x0000000005551000-memory.dmp
memory/3628-264-0x0000000005A60000-0x0000000005F5E000-memory.dmp
memory/3628-262-0x0000000000B70000-0x0000000000C64000-memory.dmp
memory/3628-261-0x0000000000B70000-0x0000000000C64000-memory.dmp